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1. Cross-shell states in 15C: A test for p-sd interactions

Author

J. Lois-Fuentes, B. Fernández-Domínguez, X. Pereira-López, F. Delaunay, W.N. Catford, A. Matta, N.A. Orr, T. Duguet, T. Otsuka, V. Somà, O. Sorlin, T. Suzuki, N.L. Achouri, M. Assié, S. Bailey, B. Bastin, Y. Blumenfeld, R. Borcea, M. Caamaño, L. Caceres, E. Clément, A. Corsi, N. Curtis, Q. Deshayes, F. Farget, M. Fisichella, G. de France, S. Franchoo, M. Freer, J. Gibelin, A. Gillibert, G.F. Grinyer, F. Hammache, O. Kamalou, A. Knapton, Tz. Kokalova, V. Lapoux, B. Le Crom, S. Leblond, F.M. Marqués, P. Morfouace, J. Pancin, L. Perrot, J. Piot, E. Pollacco, D. Ramos, D. Regueira-Castro, C. Rodríguez-Tajes, T. Roger, F. Rotaru, M. Sénoville, N. de Séréville, R. Smith, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, J.C. Thomas, N. Timofeyuk, M. Vandebrouck, J. Walshe, and C. Wheldon

Subjects
One neutron pick-up reaction, Neutron-rich carbon isotopes, Phenomenological shell-model, Ab initio calculations, Physics, QC1-999
Abstract

The low-lying structure of 15C has been investigated via the neutron-removal 16C(d,t) reaction. Along with the known bound neutron sd-shell states, unbound p-shell hole states have been observed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the [(p)−1(sd)2] neutron configurations in 15C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for 15C. However, this same interaction predicted energies that were too low for the corresponding hole states in the N=9 isotone 17O and adjustment of the p-sd and sd-sd monopole terms was required to match the 17O energies. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of 15C with the ab initio self-consistent Green's function method employing the NNLOsat interaction. The results show the sensitivity to the size of the N=8 shell gap and highlight the need to go beyond the current truncation scheme.

Published
2023
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2. Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer

Author

B. Le Crom, M. Assié, Y. Blumenfeld, J. Guillot, H. Sagawa, T. Suzuki, M. Honma, N.L. Achouri, B. Bastin, R. Borcea, W.N. Catford, E. Clément, L. Cáceres, M. Caamaño, A. Corsi, G. De France, F. Delaunay, N. De Séréville, B. Fernandez-Dominguez, M. Fisichella, S. Franchoo, A. Georgiadou, J. Gibelin, A. Gillibert, F. Hammache, O. Kamalou, A. Knapton, V. Lapoux, S. Leblond, A.O. Macchiavelli, F.M. Marqués, A. Matta, L. Ménager, P. Morfouace, N.A. Orr, J. Pancin, X. Pereira-Lopez, L. Perrot, J. Piot, E. Pollacco, D. Ramos, T. Roger, F. Rotaru, A.M. Sánchez-Benítez, M. Sénoville, O. Sorlin, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, J.-C. Thomas, and M. Vandebrouck

Subjects
Radioactive beam, Direct reactions, Neutron-proton pairing, Cooper pairs, Physics, QC1-999
Abstract

The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the fp-shell through the two-nucleon transfer reaction (p,3He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of 56Ni and 52Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the fp-shell. The transfer cross-sections for ground-state to ground-state (J=0+, T=1) and to the first (J=1+, T=0) state were extracted for both cases together with the transfer cross-section ratios σ(0+,T=1)/σ(1+,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in 52Fe, points towards a superfluid phase in the isovector channel. For the “deuteron-like” transfer, very low cross-sections to the first (J=1+, T=0) state were observed both for 56Ni(p,3He) and 52Fe(p,3He) and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed.

Published
2022
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3. Low-lying single-particle structure of 17C and the N = 14 sub-shell closure

Author

X. Pereira-López, B. Fernández-Domínguez, F. Delaunay, N.L. Achouri, N.A. Orr, W.N. Catford, M. Assié, S. Bailey, B. Bastin, Y. Blumenfeld, R. Borcea, M. Caamaño, L. Caceres, E. Clément, A. Corsi, N. Curtis, Q. Deshayes, F. Farget, M. Fisichella, G. de France, S. Franchoo, M. Freer, J. Gibelin, A. Gillibert, G.F. Grinyer, F. Hammache, O. Kamalou, A. Knapton, T. Kokalova, V. Lapoux, J.A. Lay, B. Le Crom, S. Leblond, J. Lois-Fuentes, F.M. Marqués, A. Matta, P. Morfouace, A.M. Moro, T. Otsuka, J. Pancin, L. Perrot, J. Piot, E. Pollacco, D. Ramos, C. Rodríguez-Tajes, T. Roger, F. Rotaru, M. Sénoville, N. de Séréville, R. Smith, O. Sorlin, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, T. Suzuki, J.C. Thomas, N. Timofeyuk, M. Vandebrouck, J. Walshe, and C. Wheldon

Subjects
Physics, QC1-999
Abstract

The first investigation of the single-particle structure of the bound states of 17C, via the d(16C,p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2+ and 5/2+ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreement with shell model and particle-core model calculations, and combined with their near degeneracy in energy provide clear evidence for the absence of the N=14 sub-shell closure. The very small spectroscopic factor found for the 3/2+ ground state is consistent with theoretical predictions and indicates that the ν1d3/2 strength is carried by unbound states. With a dominant ℓ=0 valence neutron configuration and a very low separation energy, the 1/2+ excited state is a one-neutron halo candidate.

Published
2020
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4. Evolution of single-particle strength in neutron-rich 71Cu

Author

P. Morfouace, S. Franchoo, K. Sieja, I. Matea, L. Nalpas, M. Niikura, A.M. Sánchez-Benítez, I. Stefan, M. Assié, F. Azaiez, D. Beaumel, S. Boissinot, C. Borcea, R. Borcea, G. Burgunder, L. Cáceres, N. De Séréville, Zs. Dombrádi, J. Elseviers, B. Fernández-Domínguez, A. Gillibert, S. Giron, S. Grévy, F. Hammache, O. Kamalou, V. Lapoux, L. Lefebvre, A. Lepailleur, C. Louchart, G. Marquinez-Duran, I. Martel, A. Matta, D. Mengoni, D.R. Napoli, F. Recchia, J.-A. Scarpaci, D. Sohler, O. Sorlin, M. Stanoiu, C. Stodel, J.-C. Thomas, and Zs. Vajta

Subjects
Physics, QC1-999
Abstract

The strength functions of the πf5/2, πp3/2 and πf7/2 orbitals in neutron-rich 71Cu were obtained in a 72Zn(d,3He)71Cu proton pick-up reaction in inverse kinematics using a radioactive beam of 72Zn at 38 MeV/u. A dedicated set-up was developed to overcome the experimental challenges posed by the low cross section of the reaction and the low energy of the outgoing 3He particles. The excitation-energy spectrum was reconstructed and spectroscopic factors were obtained after analysis of the angular distributions with the finite-range Distorted-Wave Born Approximation (DWBA). The results show that unlike for the πf5/2 orbital and contrary to earlier interpretation, the πf7/2 single-particle strength distribution is not appreciably affected by the addition of neutrons beyond N=40.

Published
2015
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5. Progress on nuclear reaction rates affecting the stellar production of 26Al

Author

A M Laird, M Lugaro, A Kankainen, P Adsley, D W Bardayan, H E Brinkman, B Côté, C M Deibel, R Diehl, F Hammache, J W den Hartogh, J José, D Kurtulgil, C Lederer-Woods, G Lotay, G Meynet, S Palmerini, M Pignatari, R Reifarth, N de Séréville, A Sieverding, R J Stancliffe, T C L Trueman, T Lawson, J S Vink, C Massimi, A Mengoni, Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica

Subjects
Radioisotopes, Radioisotope, isotoopit, Nuclear and High Energy Physics, Isòtops radioactius, core-collapse supernovae (CCSN), tähdet, Física [Àrees temàtiques de la UPC], astrofysiikka, Reaccions nuclears--Tarifes, nucleosynthesis, Nuclear reactions--Rates, nuclear reaction rate, Nuclear reaction rate, ydinreaktiot, kääpiötähdet, supernovat, radioisotope 26Al, radioisotope, alumiini, Wolf-Rayet (WR) winds, ydinfysiikka, Nucleosynthesis, Nucleosíntesi
Abstract

The radioisotope 26Al is a key observable for nucleosynthesis in the Galaxy and the environment of the early Solar System. To properly interpret the large variety of astronomical and meteoritic data, it is crucial to understand both the nuclear reactions involved in the production of 26Al in the relevant stellar sites and the physics of such sites. These range from the winds of low- and intermediate-mass asymptotic giant branch stars; to massive and very massive stars, both their Wolf–Rayet winds and their final core-collapse supernovae (CCSN); and the ejecta from novae, the explosions that occur on the surface of a white dwarf accreting material from a stellar companion. Several reactions affect the production of 26Al in these astrophysical objects, including (but not limited to) 25Mg(p, γ)26Al, 26Al(p, γ)27Si, and 26Al(n, p/α). Extensive experimental effort has been spent during recent years to improve our understanding of such key reactions. Here we present a summary of the astrophysical motivation for the study of 26Al, a review of its production in the different stellar sites, and a timely evaluation of the currently available nuclear data. We also provide recommendations for the nuclear input into stellar models and suggest relevant, future experimental work.

Published
2023
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6. Neutron-proton pairing in the N=Z radioactive fp-shell nuclei $^{56}$Ni and $^{52}$Fe probed by pair transfer

Author

B. Le Crom, M. Assié, Y. Blumenfeld, J. Guillot, H. Sagawa, T. Suzuki, M. Honma, N.L. Achouri, B. Bastin, R. Borcea, W.N. Catford, E. Clément, L. Cáceres, M. Caamaño, A. Corsi, G. De France, F. Delaunay, N. De Séréville, B. Fernandez-Dominguez, M. Fisichella, S. Franchoo, A. Georgiadou, J. Gibelin, A. Gillibert, F. Hammache, O. Kamalou, A. Knapton, V. Lapoux, S. Leblond, A.O. Macchiavelli, F.M. Marqués, A. Matta, L. Ménager, P. Morfouace, N.A. Orr, J. Pancin, X. Pereira-Lopez, L. Perrot, J. Piot, E. Pollacco, D. Ramos, T. Roger, F. Rotaru, A.M. Sánchez-Benítez, M. Sénoville, O. Sorlin, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, J.-C. Thomas, M. Vandebrouck, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Nuclear and High Energy Physics, Nuclear Theory, Direct reactions, FOS: Physical sciences, Radioactive beam, Neutron-proton pairing, 22 Física, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Cooper pairs
Abstract

The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the \textit{fp}-shell through the two-nucleon transfer reaction (p,$^3$He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of $^{56}$Ni and $^{52}$Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the \textit{fp}-shell. The transfer cross-sections for ground-state to ground-state (J=0$^+$,T=1) and to the first (J=1$^+$,T=0) state were extracted for both cases together with the transfer cross-section ratios $\sigma$(0$^+$,T=1) /$\sigma$(1$^+$,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in $^{52}$Fe, points towards a superfluid phase in the isovector channel. For the "deuteron-like" transfer, very low cross-sections to the first (J=1$^+$,T=0) state were observed both for \Ni\phe\, and \Fe\phe\, and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed., Comment: 7 pages, 4 figures

Published
2022
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7. The $$^{27}\hbox {Al}(\hbox {p},\alpha )^{24}\hbox {Mg}$$ reaction at astrophysical energies studied by means of the Trojan Horse Method applied to the $$^2\hbox {H}(^{27}\hbox {Al},\alpha ^{24}\hbox {Mg})\hbox {n}$$ reaction

Author

G. Manicò, M. L. Sergi, E. Chávez, R. Alba, J. Mrazek, G. D’Agata, A. Cvetinović, S. Hayakawa, Fairouz Hammache, G. G. Kiss, T. Parascandolo, Luis Acosta, K. Gaitán De Los Rios, Domenico Santonocito, Roberta Spartà, Catalin Matei, Silvio Cherubini, G. G. Rapisarda, Sara Palmerini, Livio Lamia, A. Tumino, T. Petruse, D. Pierroutsakou, M. Mazzocco, R. G. Pizzone, V. Burjan, M. La Commara, N. de Séréville, M. La Cognata, Zsolt Fülöp, Marisa Gulino, P. Figuera, G. L. Guardo, H. Yamaguchi, A. Di Pietro, S. Romano, and C. Maiolino

Subjects
Physics, Reaction rate, Potential impact, Hydrogen, chemistry, Analytical chemistry, General Physics and Astronomy, chemistry.chemical_element, Nuclear fusion, Production (computer science), Energy (signal processing)
Abstract

The $$^{27}\hbox {Al}(\hbox {p},\alpha )^{24}\hbox {Mg}$$ 27 Al ( p , α ) 24 Mg reaction, which drives the destruction of $$^{27}$$ 27 Al and the production of $$^{24}\hbox {Mg}$$ 24 Mg in stellar hydrogen burning, has been investigated via the Trojan Horse Method (THM), by measuring the $$^2\hbox {H}(^{27}\hbox {Al},\alpha ^{24}\hbox {Mg})\hbox {n}$$ 2 H ( 27 Al , α 24 Mg ) n three-body reaction. The experiment covered a broad energy range ($$E_\mathrm{c.m.}\le \,1.5\,\hbox {MeV}$$ E c . m . ≤ 1.5 MeV ), aiming to investigate those of interest for astrophysics. The results confirm the THM as a valuable technique for the experimental study of fusion reactions at very low energies and suggest the presence of a rich pattern of resonances in the energy region close to the Gamow window of stellar hydrogen burning (70–120 keV), with potential impact on astrophysics. To estimate such an impact a second run of the experiment is needed, since the background due the three-body reaction hampered to collect enough data to resolve the resonant structures and extract the reaction rate.

Published
2021
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8. Probing nuclear forces beyond the nuclear drip line: the cases of $^{16}$F and $^{15}$F: A Tribute to Mahir Hussein

Author

L. Caceres, A.M. Sánchez Benítez, Igor T. Čeliković, A. Matta, D. Verney, F. Rotaru, Valdir Guimaraes, P. Adsley, O. Sorlin, J. Guillot, T. Roger, C. Portail, V. Girard-Alcindor, I. Matea, A. Georgiadou, C. Petrone, D. Pantelica, R. Borcea, D. Suzuki, O. Kamalou, V. Lapoux, Megumi Niikura, I. Stefan, J. Piot, F. Flavigny, G. D’Agata, F. de Oliveira Santos, M. Ciemala, V. Tatischeff, V. Chudoba, L. Lalanne, C. Stodel, J. C. Thomas, N. Goyal, M. Stanoiu, C. Fougeres, S. Grévy, F. Negoita, N. de Séréville, L. Perrot, G. Dumitru, M. Assie, A. Meyer, J. C. Angelique, Marlete Assunção, Nicolas Michel, F. Hammache, D. Beaumel, S. Franchoo, Predrag Ujić, Dieter Ackermann, Shoko Koyama, F. de Grancey, J. Kiener, E. Berthoumieux, P. Morfouace, J. Mrazek, K. Subotic, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Elastic scattering, Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Asymmetry, Excited state, 0103 physical sciences, Nuclear force, Mirror nuclei, Atomic physics, 010306 general physics, Wave function, Nuclear Experiment, media_common
Abstract

The unbound proton-rich nuclei $$^{16}$$ F and $$^{15}$$ F are investigated experimentally and theoretically. Several experiments using the resonant elastic scattering method were performed at GANIL with radioactive beams to determine the properties of the low lying states of these nuclei. Strong asymmetry between $$^{16}$$ F– $$^{16}$$ N and $$^{15}$$ F– $$^{15}$$ C mirror nuclei is observed. The strength of the $$nucleon-nucleon$$ effective interaction involving the loosely bound proton in the $$s_{1/2}$$ orbit is significantly modified with respect to their mirror nuclei $$^{16}$$ N and $$^{15}$$ C. The reduction of the effective interaction is estimated by calculating the interaction energies with a schematic zero-range force. It is found that, after correcting for the effects due to changes in the radial distribution of the single-particle wave functions, the mirror symmetry of the $$n-p$$ interaction is preserved between $$^{16}$$ F and $$^{16}$$ N, while a difference of 63% is measured between the $$p-p$$ versus $$n-n$$ interactions in the second excited state of $$^{15}$$ F and $$^{15}$$ C nuclei. Several explanations are proposed.

Published
2021
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9. Evaluation of the N13(α,p)O16 thermonuclear reaction rate and its impact on the isotopic composition of supernova grains

Author

D. Beaumel, Fairouz Hammache, L. Audouin, M. G. Pellegriti, Marco Pignatari, Richard Longland, T. Lawson, S. Fortier, Vincent Tatischeff, A. Lefebvre-Schuhl, Anne Meyer, Alison Laird, N. de Séréville, Jürgen Kiener, and M. Stanoiu

Subjects
Physics, 010308 nuclear & particles physics, Monte Carlo method, chemistry.chemical_element, Context (language use), 7. Clean energy, 01 natural sciences, Reaction rate, Nuclear physics, Supernova, Stars, chemistry, 13. Climate action, 0103 physical sciences, Born approximation, 010306 general physics, Stellar evolution, Helium
Abstract

Background: It has been recently suggested that hydrogen ingestion into the helium shell of massive stars could lead to high C13 and N15 excesses when the shock of a core-collapse supernova passes through its helium shell. This prediction questions the origin of extremely high C13 and N15 abundances observed in rare presolar SiC grains which is usually attributed to classical novae. In this context the N13(α,p)O16 reaction plays an important role since it is in competition with N13β+ decay to C13. Purpose: The N13(α,p)O16 reaction rate used in stellar evolution calculations comes from the Caughlan and Fowler compilation with very scarce information on the origin of this rate and with no associated uncertainty. The goal of this work is to provide a recommended N13(α,p)O16 reaction rate, based on available experimental data, with a meaningful statistical uncertainty. Method: Unbound nuclear states in the F17 compound nucleus were studied using the spectroscopic information of the analog states in O17 nucleus that were measured at the Tandem-Alto facility using the C13(Li7,t)O17 α-particle-transfer reaction. The α-particle spectroscopic factors were derived using a finite-range distorted-wave Born approximation analysis. This spectroscopic information was used to calculate a recommended N13(α,p)O16 reaction rate with meaningful uncertainty using a Monte Carlo approach. Results: The N13(α,p)O16 reaction rate from the present work is found to be within a factor of two of the previous evaluation in the temperature range of interest, with a typical uncertainty of a factor ≈2-3. The source of this uncertainty has been identified to come from the three main contributing resonances at Erc.m.=221, 741, and 959 keV. This new error estimation translates to an overall uncertainty in the C13 production of a factor of 50 when using the lower and upper reaction rates in the conditions relevant for the N13(α,p)O16 activation. Conclusions: The main source of uncertainty on the re-evaluated N13(α,p)O16 reaction rate currently comes from the uncertain α-particle width of relevant F17 states.

Published
2020
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10. Bayesian analysis of the Zn70(d,He3)Cu69 transfer reaction

Author

P. Morfouace, Richard Longland, Caleb Marshall, and N. de Séréville

Subjects
Physics, Angular momentum, Transfer (group theory), Particle transfer, 010308 nuclear & particles physics, 0103 physical sciences, Bayesian probability, Statistical physics, Nuclear Experiment, 010306 general physics, 01 natural sciences, Nuclear theory
Abstract

Particle transfer reactions provide information on the single-particle structure of nuclei, with the caveat of imperfect reaction theory. In this paper, Bayesian analysis is applied in order to estimate the theoretical uncertainties associated with both the extraction of spectroscopic factors and the assignment of orbital angular momentum values from a pickup reaction. The authors find that these uncertainties are closely tied to experimental conditions, and discuss how to reduce their influence on future measurements.

Published
2020
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11. The MUGAST-AGATA-VAMOS campaign: Set-up and performances

Author

D. Mengoni, C. Nicolle, F. Flavigny, F. Noury, N. de Séréville, J.S. Rojo, L. Ménager, J. Goupil, A. Goasduff, F. de Oliveira, F. Hammache, M. Assié, A. Korichi, W. N. Catford, J. Dudouet, L. Lalanne, E. Rindel, L. Vatrinet, Y. Blumenfeld, G. Frémont, V. Girard-Alcindor, D. Ramos, D. Brugnara, A. Matta, B. Fernández-Domínguez, A. Raggio, F. Legruel, F. Didierjean, S. Leblond, P. R. John, A. Lefevre, C. Fougères, M. Stanoiu, C. Lenain, A. Gottardo, I. Zanon, I. Stefan, A. Giret, E. Rauly, C. Aa. Diget, R. Borcea, Franck Delaunay, J. Casal, F. Galtarossa, M. Siciliano, K. Rezynkina, Didier Beaumel, B. Million, Eric Clément, A. Lemasson, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Photon, FOS: Physical sciences, Kinematics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Spectrometer, Particle identification, symbols.namesake, Optics, 0103 physical sciences, Solid-state detectors, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Electronics, Nuclear Experiment (nucl-ex), 010306 general physics, Spectroscopy, Nuclear Experiment, Instrumentation, Physics, 010308 nuclear & particles physics, business.industry, Direct nuclear reactions, Triple coincidences, Instrumentation and Detectors (physics.ins-det), symbols, AGATA, business, Doppler effect
Abstract

The MUGAST-AGATA-VAMOS set-up at GANIL combines the MUGAST highly-segmented silicon array with the state-of-the-art AGATA array and the large acceptance VAMOS spectrometer. The mechanical and electronics integration copes with the constraints of maximum efficiency for each device, in particular {\gamma}-ray transparency for the silicon array. This complete set-up offers a unique opportunity to perform exclusive measurements of direct reactions with the radioactive beams from the SPIRAL1 facility. The performance of the set-up is described through its commissioning and two examples of transfer reactions measured during the campaign. High accuracy spectroscopy of the nuclei of interest, including cross-sections and angular distributions, is achieved through the triple-coincidence measurement. In addition, the correction from Doppler effect of the {\gamma}-ray energies is improved by the detection of the light particles and the use of two-body kinematics and a full rejection of the background contributions is obtained through the identification of heavy residues. Moreover, the system can handle high intensity beams (up to 108 pps). The particle identification based on the measurement of the time-of-flight between MUGAST and VAMOS and the reconstruction of the trajectories is investigated., Comment: 13 pages, 18 figures

Published
2021
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12. Study of the neutron induced reaction 17O(n,α)14C at astrophysical energies via the Trojan Horse Method

Author

G. Manicò, G. D’Agata, G. L. Guardo, N. de Séréville, C. Spitaleri, S. Romano, D. Lattuada, M. Lattuada, A. A. Oliva, Fairouz Hammache, Roberta Spartà, M. La Commara, M. L. Sergi, A. Tumino, Maria Letizia Pumo, S. Palmerini, M. Mazzocco, G. G. Rapisarda, I. Indelicato, S. Cherubini, S. Messina, S. Hayakawa, M. La Cognata, M. Gulino, P. Figuera, A. Cvetinović, Neven Soić, A. Di Pietro, R. G. Pizzone, L. Lamia, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Range (particle radiation), 010308 nuclear & particles physics, Abundance (chemistry), QC1-999, Trojan horse, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Iron peak, 01 natural sciences, 7. Clean energy, Nuclear physics, Stars, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Neutron, Center of mass, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010306 general physics
Abstract

Neutron induced reactions are fundamental for the nucleosynthesis of elements in the universe. Indeed, to correctly study the reactions involved in the well-known s-process in stars, which produce about half of the elements beyond the iron peak, it is mandatory to know the neutron abundance available in those stars. The 17O(n, a)14C reaction is one of the so-called “neutron poisons” for the pro- cess and it could play an important role in the balance of the neutron abundance. The reaction is therefore investigated in the energy range of astrophysical inter- est between 0 and 350 keV in the center of mass by applying the Trojan Horse Method to the three body reaction 2H(17O, a14C)H.

Published
2020
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13. Advances in the Direct Study of Carbon Burning in Massive Stars

Author

R. Shearman, G. Fruet, J. Lesrel, D. Curien, J. Nippert, S. Courtin, R. Canavan, D. G. Jenkins, A. S. Brown, S. Della Negra, D. Montanari, Zs. Podolyák, Arnd Meyer, P. H. Regan, M. Richer, L. Morris, N. de Séréville, M. Moukaddam, E. Charon, W. N. Catford, F. Hammache, M. Rudigier, Gavin Lotay, C. Stodel, J. Duprat, M. Heine, P. Adsley, Isabelle Ribaud, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], Physics, Explosive material, Extrapolation, Gamma ray, Nuclear structure, General Physics and Astronomy, Coulomb barrier, Physique [physics]/Physique [physics], 01 natural sciences, 7. Clean energy, Nuclear physics, Stars, Orders of magnitude (time), 13. Climate action, 0103 physical sciences, Nuclear fusion, Nuclear Experiment, 010306 general physics, Nuclear Physics
Abstract

The 12C + 12C fusion reaction plays a critical role in the evolution of massive stars and also strongly impacts various explosive astrophysical scenarios. The presence of resonances in this reaction at energies around and below the Coulomb barrier makes it impossible to carry out a simple extrapolation down to the Gamow window—the energy regime relevant to carbon burning in massive stars. The 12C + 12C system forms a unique laboratory for challenging the contemporary picture of deep sub-barrier fusion (possible sub-barrier hindrance) and its interplay with nuclear structure (sub-barrier resonances). Here, we show that direct measurements of the 12C + 12C fusion cross section may be made into the Gamow window using an advanced particle-gamma coincidence technique. The sensitivity of this technique effectively removes ambiguities in existing measurements made with gamma ray or charged-particle detection alone. The present cross-section data span over 8 orders of magnitude and support the fusion-hindrance model at deep sub-barrier energies.

Published
2019
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14. High-resolution study of levels in the astrophysically important nucleus Mg26 and resulting updated level assignments

Author

P. Adsley, Anne Meyer, H.-F. Wirth, Ralf Hertenberger, J. W. Brümmer, R. Neveling, Thomas Faestermann, D. Seiler, Fairouz Hammache, N. de Séréville, and S. P. Fox

Subjects
Physics, Proton, 010308 nuclear & particles physics, Gamma ray, Nuclear data, Inelastic scattering, 01 natural sciences, Resonance (particle physics), Nuclear physics, Deuterium, Excited state, 0103 physical sciences, Neutron, Nuclear Experiment, 010306 general physics
Abstract

Background: The Ne-22(alpha, n)Mg-25 reaction is an important source of neutrons for the s-process. Direct measurement of this reaction and the competing Ne-22(alpha,gamma)Mg-26 reaction are challenging due to the gaseous nature of both reactants, the low cross section and the experimental challenges of detecting neutrons and high-energy gamma rays. Detailed knowledge of the resonance properties enables the rates to be constrained for s-process models. Purpose: Previous experimental studies have demonstrated a lack of agreement in both the number and excitation energy of levels in Mg-26. To try to resolve the disagreement between different experiments, proton and deuteron inelastic scattering from Mg-26 have been used to identify excited states. Method: Proton and deuteron beams from the tandem accelerator at theMaier-Leibnitz Laboratorium at Garching, Munich, were incident upon enriched (MgO)-Mg-26 targets. Scattered particles were momentum-analyzed in the Q3D magnetic spectrograph and detected at the focal plane. Results: Reassignments of states around E-x = 10.8-10.83 MeV in Mg-26 suggested in previous works have been confirmed. In addition, new states in Mg-26 have been observed, two below and two above the neutron threshold. Up to six additional states above the neutron threshold may have been observed compared to experimental studies of neutron reactions on Mg-25, but some or all of these states may be due to Mg-24 contamination in the target. Finally, inconsistencies between measured resonance strengths and some previously accepted J(pi) assignments of excited Mg-26 states have been noted. Conclusion: There are still a large number of nuclear properties in Mg-26 that have yet to be determined and levels that are, at present, not included in calculations of the reaction rates. In addition, some inconsistencies between existing nuclear data exist that must be resolved in order for the reaction rates to be properly calculated.

Published
2018
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15. The STELLA Apparatus for Particle-Gamma Coincidence Fusion Measurements with Nanosecond Timing

Author

F. Haas, G. Heitz, D. G. Jenkins, P. Adsley, P. Dené, M. Richer, C. Stodel, L. Morris, M. Krauth, C. Beck, S. Courtin, D. Montanari, P. H. Regan, J. Lesrel, L. Charles, M. Heine, F. Hammache, M. Rudigier, G. Fruet, Zs. Podolyák, A. Meyer, S. Della Negra, N. de Séréville, D. Curien, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien ( IPHC ), Centre National de la Recherche Scientifique ( CNRS ) -Université de Strasbourg ( UNISTRA ), Université de Strasbourg ( UNISTRA ), Institut de Physique Nucléaire d'Orsay ( IPNO ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Grand Accélérateur National d'Ions Lourds ( GANIL ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Proton, Aucun, Rotating target, FOS: Physical sciences, 01 natural sciences, Optics, Coincident, 0103 physical sciences, Coincidence technique, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Fusion, Instrumentation, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Physics, 010308 nuclear & particles physics, business.industry, Gamma ray, Alpha particle, Instrumentation and Detectors (physics.ins-det), Nanosecond, Charged particle, Proton-alpha separation, LaBr3 self-calibration, Particle, LaBr 3 self-calibration, business, Beam (structure)
Abstract

The STELLA (STELlar LAboratory) experimental station for the measurement of deep sub-barrier light heavy-ion fusion cross sections has been installed at the Androm\`{e}de accelerator at the Institut de Physique Nucl\'{e}aire, Orsay (France). The setup is designed for the direct experimental determination of heavy-ion fusion cross sections as low as tens of picobarn. The detection concept is based on the coincident measurement of emitted gamma rays with the UK FATIMA (FAst TIMing Array) and evaporated charged particles using a silicon detector array. Key developments relevant to reaching the extreme sub-barrier fusion region are a rotating target mechanism to sustain beam intensities above 10$\mu$A, an ultra-high vacuum to prevent carbon built-up and gamma charged-particle timing in the order of nanoseconds sufficient to separate proton and alpha particles., Comment: 18 pages, 11 figures

Published
2018
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16. Study of key resonances in the $^{30}$P(p,γ)$^{31}$S reaction in classical novae

Author

F. Flavigny, L. Olivier, A. Alellara, B. Bastin, L. Perrot, J. Riley, L. Grassi, F. de Oliveira, T. Id Barkach, J. Guillot, Alison Laird, J. Kiener, Á. M. Sánchez Benítez, D. Beaumel, V. Tatischeff, Marlete Assunção, Anuj Parikh, S. P. Fox, A. Meyer, P. Adsley, Giuseppe D’Agata, C. Portail, A. Gottardo, F. Hammache, I. Matea, M. Assié, N. Oulebsir, A. Georgiadou, C. Delafosse, M. MacCormick, N. Hubbard, Valdir Guimaraes, A. Coc, N. de Séréville, I. Stefan, K. Béroff, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Proton, 010308 nuclear & particles physics, QC1-999, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Coincidence, Nuclear physics, Reaction rate, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Excited state, 0103 physical sciences, 010303 astronomy & astrophysics
Abstract

Among reactions with strong impact on classical novae model predictions, 30P(p,γ)31S is one of the few remained that are worthy to be measured accurately, because of their rate uncertainty, as like as 18F(p,α)15O and 25Al(pγ)26Si. To reduce the nuclear uncertainties associated to this reaction, we performed an experiment at ALTO facility of Orsay using the 31P(3He,t)31S reaction to populate 31S excited states of astrophysical interest and detect in coincidence the protons coming from the decay of the populated states in order to extract the proton branching ratios. After a presentation of the astrophysical context of this work, the current situation of the 30P(p,γ)31S reaction rate will be discussed. Then the experiment set-up of this work and the analysis of the single events will be presented.

Published
2017
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17. First measurement of the S34(p,γ)Cl35 reaction rate through indirect methods for presolar nova grains

Author

Ralf Hertenberger, C. J. Barton, H.-F. Wirth, T. Faestermann, Anuj Parikh, S. Gillespie, M. Williams, N. de Séréville, J. Riley, and Jordi José

Subjects
Physics, Range (particle radiation), 010308 nuclear & particles physics, Presolar grains, Monte Carlo method, Nova (laser), Astrophysics, Type II supernova, 01 natural sciences, Nuclear physics, Reaction rate, Isotopic ratio, 13. Climate action, Nucleosynthesis, 0103 physical sciences, 010306 general physics
Abstract

Sulphur isotopic ratio measurements may help to establish the astrophysical sites in which certain presolar grains were formed. Nova model predictions of the S-34/S-32 ratio are, however, unreliable due to the lack of an experimental S-34(p,gamma)Cl-35 reaction rate. To this end, we have measured the S-34(He-3,d)Cl-35 reaction at 20 MeV using a high resolution quadrupole-dipole-dipole-dipolemagnetic spectrograph. Twenty-two levels over 6.2 MeV < E-x (Cl-35) < 7.4 MeV were identified, ten of which were previously unobserved. Proton-transfer spectroscopic factors have been measured for the first time over the energy range relevant for novae. With this new spectroscopic information a new S-34(p,gamma)Cl-35 reaction rate has been determined using a Monte Carlo method. Hydrodynamic nova model calculations have been performed using this new reaction rate. These models show that remaining uncertainties in the S-34(p,gamma) rate affect nucleosynthesis predictions by less than a factor of 1.4, and predict a S-34/S-32 isotopic ratio of 0.014-0.017. Since recent type II supernova models predict S-34/S-32 = 0.026-0.053, the S-34/S-32 isotopic ratio may be used, in conjunction with other isotopic signatures, to distinguish presolar grains from oxygen-neon nova and type II supernova origin. Our results address a key nuclear physics uncertainty on which recent considerations discounting the nova origin of several grains depend.

Published
2017
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18. Cross section measurements in the $^{12}$C+$^{12}$C system

Author

S. Della Negra, Sergio Almaraz-Calderon, Oliver S. Kirsebom, B. Bucher, C. L. Jiang, R. V. F. Janssens, Anne Meyer, Rashi Talwar, X.D. Tang, John P. Greene, B. B. Back, M. Heine, G. Fruet, X. Fang, Fairouz Hammache, D. J. Henderson, S. A. Kuvin, P. Adsley, Catherine Deibel, M. Rudigier, Kalle Auranen, S. Zhu, S. Courtin, M. Albers, D. Bourgin, M. P. Carpenter, Martín Alcorta, D. Seweryniak, Daniel Santiago-Gonzalez, D. Montanari, F. Haas, B. P. Kay, Calem Hoffman, P. H. Regan, D. G. Jenkins, P. F. Bertone, J. Sethi, C. Stodel, Claudio Ugalde, A. Lefebvre-Schuhl, J. Lesrel, A. D. Ayangeakaa, Clayton Dickerson, K. E. Rehm, B. DiGiovine, L. Morris, N. de Séréville, R. C. Pardo, Melina Avila, T. Lauritsen, S. Bottoni, S. T. Marley, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, 010308 nuclear & particles physics, QC1-999, Measure (physics), Aucun, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Coincidence, law.invention, Nuclear physics, Ignition system, Cross section (physics), chemistry, 13. Climate action, law, 0103 physical sciences, Nuclear astrophysics, Nuclear fusion, 010306 general physics, Carbon
Abstract

International audience; The 12C+12C fusion reaction is one of the most important for nuclear astrophysics since it determines the carbon ignition in stellar environments. Two experiments which make use of the gamma-particle coincidence technique to measure the 12C+12C S-factors at deep sub barrier energies are discussed. Results are presented showing a decrease of the S-factor below Ec.m. = 3 MeV.

Published
2017
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19. Spectroscopy of Fe61 via the neutron transfer reaction H2(Fe60,p)Fe*61

Author

S. Giron, F. Hammache, N. de Séréville, P. Roussel, J. Burgunder, M. Moukaddam, D. Beaumel, L. Caceres, G. Duchêne, E. Clément, B. Fernandez-Dominguez, F. Flavigny, G. de France, S. Franchoo, D. Galaviz-Redondo, L. Gasques, J. Gibelin, A. Gillibert, S. Grevy, J. Guillot, M. Heil, J. Kiener, V. Lapoux, F. Maréchal, A. Matta, I. Matea, L. Nalpas, J. Pancin, L. Perrot, A. Obertelli, R. Raabe, J. A. Scarpaci, K. Sieja, O. Sorlin, I. Stefan, C. Stodel, M. Takechi, J. C. Thomas, and Y. Togano

Subjects
Physics, Photon, Silicon, 010308 nuclear & particles physics, chemistry.chemical_element, 01 natural sciences, 7. Clean energy, Charged particle, Cross section (physics), chemistry, 0103 physical sciences, Bound state, Neutron, Atomic physics, 010306 general physics, Adiabatic process, Spectroscopy
Abstract

The direct component of the 60Fe(n,γ)61Fe cross section was investigated by populating the bound states of the 61Fe nucleus through the (d,pγ) transfer reaction in inverse kinematics using a radioactive beam of 60Fe at 27A MeV. The experiment was performed at GANIL using the MUST2 array and an annular double-sided silicon strip detector for the detection of the light charged particle in coincidence with the photons measured in the EXOGAM γ-ray detectors. For the first time, the spectroscopic factors of the first 3/2−, 5/2−, 1/2−, and 9/2+ states of 61Fe were deduced experimentally from an adiabatic distorted wave approximation analysis of the data. The obtained results show a very good agreement with the shell-model predictions. The calculated direct component of the (n,γ) cross section was found negligible and of about 2% of the total, indicating a dominant resonant component.

Published
2017
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20. Rearrangement of valence neutrons in the neutrinoless double- β decay of Xe136

Author

Stuart Szwec, F. Hammache, N. de Séréville, J. P. Entwisle, D. K. Sharp, J. F. Smith, S. J. Freeman, Thomas Elias Cocolios, Valdir Guimaraes, I. Stefan, P. P. McKee, E. Parr, C. Portail, B. P. Kay, J. P. Schiffer, and Liam Gaffney

Subjects
Physics, Semileptonic decay, Valence (chemistry), Proton, 010308 nuclear & particles physics, Nuclear Theory, 7. Clean energy, 01 natural sciences, Nuclear physics, Double beta decay, 0103 physical sciences, Neutron, Nuclear Experiment, 010306 general physics, Nuclear theory
Abstract

In neutrinoless double-$\ensuremath{\beta}$ decay such as ${}^{136}$Xe to ${}^{136}$Ba, two neutrons become two protons, thus rearranging the occupancy of protons and neutrons in the ground states of the parent and daughter nuclei. From precision measurements of the cross sections of single-neutron adding and -removing reactions, the authors extract the change in ground-state neutron occupancies between ${}^{136}$Xe and ${}^{136}$Ba. Along with recent results on the proton occupancies, the new experimental neutron occupancies disagree with those used in existing theoretical calculations of the rate of this elusive $\ensuremath{\beta}$-decay mode, and provide a \hskip-0.22em \hskip-0.22embasis for improved estimates of the uncertainties for new calculations.

Published
2016
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21. The Giant Pairing Vibration in Carbon isotopes

Author

N. de Séréville, J. A. Scarpaci, M. Assié, F. Azaiez, Francesco Cappuzzello, C. Agodi, Diana Carbone, Manuela Cavallaro, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM)

Subjects
History, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Education, Nuclear physics, 0103 physical sciences, medicine, Neutron detection, Neutron, 010306 general physics, Nuclear Experiment, Physics, Spectrometer, 010308 nuclear & particles physics, Resonance, Computer Science Applications, Vibration, medicine.anatomical_structure, 13. Climate action, Pairing, Atomic physics, Nucleus, Excitation
Abstract

International audience; The (13)C((18)O,(16)O)(15)C and (12)C((18)O,(16)O)(14)C reactions at 84 MeV incident energy were explored up to high excitation energy of the residual nucleus thanks to the use of the MAGNEX spectrometer to detect the ejectiles. In the region above the two-neutron separation energy, a resonance has been observed in both nuclei, attributed to the Giant Pairing Vibration (GPV). The neutron decay of the (15)C resonances, including the GPV, populated via the two- neutron transfer reaction has been studied using an innovative technique, which couples MAGNEX with the EDEN neutron detector array. The data show that the (15)C GPV mainly decays via two-neutron emission.

Published
2016
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22. Study of the 26 Al(n,p) 26 Mg and 26 Al(n,α) 23 Na reactions using the 27 Al(p,p') 27 Al inelastic scattering reaction

Author

I. Deloncle, G. Mavilla, B. Le Crom, Fairouz Hammache, C. T. Nsangu, P. Roussel, P. Adsley, Alison Laird, Marine Vandebrouck, S. Ancelin, Vincent Tatischeff, J. Guillot, S. P. Fox, C. Hamadache, I. Stefan, N. Oulebsir, M. Assié, C. J. Barton, L. Perrot, G. Marquinez Duran, S. Benamara, D. Suzuki, P. Morfouace, L. Lefebvre, C. A. Diget, N. de Séréville, Jürgen Kiener, A. Lefebfre-Schuhl, A. Coc, A. M. Sánchez-Benítez, and A. Mutschler

Subjects
Nuclear reaction, Physics, History, 010504 meteorology & atmospheric sciences, Isotope, Radiochemistry, Inelastic scattering, 010502 geochemistry & geophysics, Isotopes of sodium, 01 natural sciences, Computer Science Applications, Education, Nucleosynthesis, Neutron, Alpha decay, Isotopes of magnesium, 0105 earth and related environmental sciences
Abstract

26Al was the first cosmic radioactivity ever detected in the galaxy as well as one of the first extinct radioactivity observed in refractory phases of meteorites. Its nucleosynthesis in massive stars is still uncertain mainly due to the lack of nuclear information concerning the 26Al(n,p)26Mg and 26Al(n,α)23Na reactions. We report on a single and coincidence measurement of the 27Al(p,p’)27Al(p)26Mg and 27Al(p,p’)27Al(α)23Na reactions performed at the Orsay TANDEM facility aiming at the spectroscopy study of 27Al above the neutron threshold. Fourteen states are observed for the first time within 350 keV above the 26Al+n threshold.

Published
2016

23. NPTool: a simulation and analysis framework for low-energy nuclear physics experiments

Author

N. de Séréville, A. Matta, R. Shearman, P Morfouace, F. Flavigny, M. Labiche, Institut de Physique Nucléaire d'Orsay (IPNO), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Detector, Monte Carlo method, Experimental data, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Charged particle, Nuclear physics, Low energy, Workflow, Open source data, 0103 physical sciences, Physics::Accelerator Physics, 010306 general physics, Nuclear Experiment, Radioactive beam
Abstract

International audience; The Nuclear Physics Tool (NPTool) is an open source data analysis and Monte Carlo simulation framework that has been developed for low-energy nuclear physics experiments with an emphasis on radioactive beam experiments. The NPTool offers a unified framework for designing, preparing and analyzing complex experiments employing multiple detectors, each of which may comprise some hundreds of channels. The framework has been successfully used for the analysis and simulation of experiments at facilities including GANIL, RIKEN, ALTO and TRIUMF, using both stable and radioactive beams. This paper details the NPTool philosophy together with an overview of the workflow. The framework has been benchmarked through the comparison of simulated and experimental data for a variety of detectors used in charged particle and gamma-ray spectroscopy.

Published
2016
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24. The 20Ne(d,p)21Ne transfer reaction in relation to the s-process abundances

Author

Alison Laird, C. T. Nsangu, N. de Séréville, B. R. Fulton, T. Faestermann, H.-F. Wirth, Anuj Parikh, Ralf Hertenberger, K. Schmitt, A. St. J. Murphy, Richard Longland, J. R. Tomlinson, M. D. Birch, A. Chen, P. Adsley, B. P. Kay, S. Manwell, S. P. Fox, D. Irvine, and Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica

Subjects
Physics, Astrofísica, History, Física [Àrees temàtiques de la UPC], Metallicity, Nuclear Theory, Astrophysics, Computer Science Applications, Education, Nuclear physics, Stars, Dipole, Deuterium, Quadrupole, Neutron, Atomic physics, s-process, Nuclear Experiment, Excitation, Astrophysics::Galaxy Astrophysics
Abstract

Nuclear Physics in Astrophysics VI (NPA6) , 19–24 May 2013, Lisbon, Portugal A study of the 20Ne(d,p)21Ne transfer reaction was performed using the Quadrupole Dipole Dipole Dipole (Q3D) magnetic spectrograph in Garching, Germany. The experiment probed excitation energies in 21Ne ranging from 6.9 MeV to 8.5 MeV. The aim was to investigate the spectroscopic information of 21Ne within the Gamow window of core helium burning in massive stars. Further information in this region will help reduce the uncertainties on the extrapolation down to Gamow window cross sections of the 17 O(alfa,gamma)21Ne reaction. In low metallicity stars, this reaction has a direct impact on s-process abundances by determining the fate of 16O as either a neutron poison or a neutron absorber. The experiment used a 22-MeV deuteron beam, with intensities varying from 0.5-1 miA, and an implanted target of 20Ne of 7 microg/cm2 in 40 microg/cm2 carbon foils. Sixteen 21Ne peaks have been identified in the Ex = 6.9-8.5 MeV range, of which only thirteen peaks correspond to known states. Only the previously-known Ex = 7.960 MeV state was observed within the Gamow window.

Published
2016

25. Indirect techniques for astrophysical reaction rates determinations

Author

Alison Laird, N. de Séréville, N. Oulebsir, P. Roussel, S. Benamara, I. Stefan, Fairouz Hammache, A. Coc, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Nuclear reaction, Physics, 010308 nuclear & particles physics, QC1-999, Context (language use), Inelastic scattering, 01 natural sciences, 7. Clean energy, Reaction rate, Nuclear physics, Stars, 13. Climate action, 0103 physical sciences, 010306 general physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Nuclear Experiment
Abstract

International audience; Direct measurements of nuclear reactions of astrophysical interest can be challenging. Alternative experimental techniques such as transfer reactions and inelastic scattering reactions offer the possibility to study these reactions by using stable beams. In this context, I will present recent results that were obtained in Orsay using indirect techniques. The examples will concern various astrophysical sites, from the Big-Bang nucleo synthesis to the production of radioisotopes in massive stars.

Published
2016
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26. Indirect study of 19Ne states near the threshold

Author

N. de Séréville, B. Bouzid, Marc Loiselet, Jürgen Kiener, Carmen Angulo, Vincent Tatischeff, A. Coc, Michel Gaelens, P. Figuera, F. de Oliveira Santos, Guido Ryckewaert, Daniel Labar, Alain Ninane, S. Fortier, S. Ouichaoui, P. Demaret, Marlete Assunção, S. Cherubini, F. Hammache, Pierre Leleux, E. Berthoumieux, D. Beaumel, N. Smirnova, Manoel Couder, and A. Lefebvre-Schuhl

Subjects
Physics, Reaction rate, Nuclear reaction, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Scattering, 0103 physical sciences, Atomic physics, 010306 general physics, 01 natural sciences, Radioactive beam
Abstract

The early E ⩽ 511 keV gamma-ray emission from novae depends critically on the F 18 ( p , α ) O 15 reaction. Unfortunately the reaction rate of the F 18 ( p , α ) O 15 reaction is still largely uncertain due to the unknown strengths of low-lying proton resonances near the F 18 + p threshold which play an important role in the nova temperature regime. We report here our last results concerning the study of the d ( F 18 , p ) F 19 ( α ) N 15 transfer reaction. We show in particular that these two low-lying resonances cannot be neglected. These results are then used to perform a careful study of the remaining uncertainties associated to the F 18 ( p , α ) O 15 and F 18 ( p , γ ) Ne 19 reaction rates.

Published
2007
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27. Spectroscopy ofNe19for the thermonuclearO15(α,γ)Ne19andF18(p,α)O15reaction rates

Author

Jürgen Kiener, N. de Séréville, Ralf Hertenberger, P. Adsley, Kathrin Wimmer, Fairouz Hammache, I. Stefan, H.-F. Wirth, B. R. Fulton, Anuj Parikh, Thomas Faestermann, D. Seiler, and Alison Laird

Subjects
Reaction rate, Physics, Nuclear and High Energy Physics, Thermonuclear fusion, Proton, Nuclear structure, Atomic physics, Type (model theory), Spectroscopy
Abstract

Uncertainties in the thermonuclear rates of the $^{15}\text{O}(\ensuremath{\alpha},\ensuremath{\gamma}){}^{19}\text{Ne}$ and ${}^{18}\text{F}(p,\ensuremath{\alpha}){}^{15}\text{O}$ reactions affect model predictions of light curves from type I x-ray bursts and the amount of the observable radioisotope $^{18}\text{F}$ produced in classical novae, respectively. To address these uncertainties, we have studied the nuclear structure of $^{19}\text{Ne}$ over ${E}_{x}=4.0\ensuremath{-}5.1$ and 6.1--7.3 MeV using the $^{19}\text{F}(^{3}\text{He},t)^{19}\text{Ne}$ reaction. We find the ${J}^{\ensuremath{\pi}}$ values of the 4.14- and 4.20-MeV levels to be consistent with $9/{2}^{\ensuremath{-}}$ and $7/{2}^{\ensuremath{-}}$, respectively, in contrast to previous assumptions. We confirm the recently observed triplet of states around 6.4 MeV and find evidence that the state at 6.29 MeV, just below the proton threshold, is either broad or a doublet. Our data also suggest that predicted but yet unobserved levels may exist near the 6.86-MeV state. Higher resolution experiments are urgently needed to further clarify the structure of $^{19}\text{Ne}$ around the proton threshold before a reliable ${}^{18}\text{F}(p,\ensuremath{\alpha}){}^{15}\text{O}$ rate for nova models can be determined.

Published
2015
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28. Studying astrophysical reactions with low-energy RI beams at CRIB

Author

Tetsuro Komatsubara, Y. Wakabayashi, Y. Sakaguchi, Seigo Kato, A. Coc, Claudio Spitaleri, L. H. Khiem, Shigeru Kubono, M. La Cognata, D. Kahl, T. Hashimoto, S. Romano, Y. K. Kwon, D. N. Binh, H. Yamaguchi, Shawn Bishop, G. G. Rapisarda, Silvio Cherubini, T. Kawabata, N. N. Duy, M. Gulino, Takashi Teranishi, F. Hammache, Naohito Iwasa, Livio Lamia, S. Hayakawa, N. de Séréville, G. G. Kiss, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Physique Nucléaire d'Orsay (IPNO), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
QC1-999, THERMONUCLEAR REACTION-RATES, SEPARATOR CRIB, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Reaction rate, Low energy, 0103 physical sciences, Nuclear astrophysics, 010306 general physics, Nuclear Experiment, Physics, NUCLEAR ASTROPHYSICS, RELEVANT, 010308 nuclear & particles physics, Nuclear structure, Resonant scattering, Supernova, TARGET, STATES, 13. Climate action, THERMONUCLEAR REACTION-RATES, NUCLEAR ASTROPHYSICS, SEPARATOR CRIB, STATES, COMPILATION, RELEVANT, SYSTEM, TARGET, COMPILATION, Experimental methods, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Beam (structure), SYSTEM
Abstract

International audience; Studies on nuclear astrophysics, nuclear structure, and other interests have been performed using the radioactive-isotope (RI) beams at the low-energy RI beam separator CRIB, operated by Center for Nuclear Study (CNS), the University of Tokyo. A typical measurement performed at CRIB is the elastic resonant scattering with the inverse kinematics. One recent experiment was on the alpha resonant scattering with ^7Li and ^7Be beams. This study is related to the astrophysical ^7Li/^7Be(alpha,gamma) reactions, important at hot p-p chain and nup-process in supernovae. There have also been measurements based on other experimental methods. The first THM measurement using an RI beam has been performed at CRIB, to study the ^18F(p, alpha)^15O reaction at astrophysical energies via the three body reaction ^2H(^18F, alpha^15O)n. The ^18F(p, alpha) ^15O reaction rate is crucial to understand the 511-keV gamma-ray production in nova explosion phenomena, and we successfully evaluated the reaction cross section at novae temperature and below experimentally for the first time.

Published
2015
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29. Evolution of single-particle strength in neutron-rich 71Cu

Author

C. Louchart, G. Marquínez-Durán, P. Morfouace, M. Assié, S. Franchoo, S. Boissinot, D. Beaumel, F. Azaiez, D. Mengoni, J. A. Scarpaci, D. R. Napoli, R. Borcea, Zsolt Dombrádi, Kamila Sieja, L. Lefebvre, A. Matta, Zs. Vajta, F. Recchia, A. Lepailleur, C. Stodel, M. Niikura, Ismael Martel, N. de Séréville, G. Burgunder, B. Fernández-Domínguez, L. Caceres, O. Sorlin, I. Stefan, O. Kamalou, A. M. Sánchez-Benítez, S. Grévy, L. Nalpas, J. Elseviers, A. Gillibert, V. Lapoux, I. Matea, C. Borcea, Fairouz Hammache, M. Stanoiu, Dóra Sohler, J. C. Thomas, S. Giron, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Universidade de Santiago de Compostela [Spain] (USC ), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), GANILEXP, Universidade de Santiago de Compostela. Departamento de Física de Partículas, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Proton, Fizikai tudományok, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, lcsh:QC1-999, Nuclear physics, Cross section (physics), Distribution (mathematics), Atomic orbital, Természettudományok, Particle, Neutron, Atomic physics, Born approximation, Nuclear Experiment, Radioactive beam, lcsh:Physics
Abstract

The strength functions of the πf5/2πf5/2, πp3/2πp3/2 and πf7/2πf7/2 orbitals in neutron-rich 71Cu were obtained in a 72Zn(d,3He)71Cu proton pick-up reaction in inverse kinematics using a radioactive beam of 72Zn at 38 MeV/u. A dedicated set-up was developed to overcome the experimental challenges posed by the low cross section of the reaction and the low energy of the outgoing 3He particles. The excitation-energy spectrum was reconstructed and spectroscopic factors were obtained after analysis of the angular distributions with the finite-range Distorted-Wave Born Approximation (DWBA). The results show that unlike for the πf5/2πf5/2 orbital and contrary to earlier interpretation, the πf7/2πf7/2 single-particle strength distribution is not appreciably affected by the addition of neutrons beyond N=40N=40., The authors are thankful to the Ganil accelerator staff, informatics service and to the IPN design office. We are grateful for the grant of the Romanian National Authority for Scientific Research, CNCS - UEFISCDI, project number PN-II-ID-PCE-2011-3-048, to the grant FPA2010-22131-C02-01 from the Spanish government and to the OTKA contract No. K100835.

Published
2015
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30. Fast-neutron induced background in LaBr3:Ce detectors

Author

M. S. Yavahchova, C. Blondel, G. Prévot, C. Hamadache, B. Horeau, N. de Séréville, I. Deloncle, A. Gostojic, O. Limousin, R. Rodríguez-Gasén, N. Goutev, Marin Chabot, P. Laurent, Fairouz Hammache, Jürgen Kiener, Vincent Tatischeff, Remi Chipaux, S. Dubos, A. Coc, S. Ouichaoui, CSNSM AN, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CSNSM SNO, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM)

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Proton, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, FOS: Physical sciences, Monte-Carlo simulation, Scintillator, 7. Clean energy, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, NE-213, 0103 physical sciences, Neutron detection, Neutron, Irradiation, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010303 astronomy & astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Neutron irradiation, [PHYS]Physics [physics], Bonner sphere, Physics, Range (particle radiation), 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), LaBr3:Ce, HP-Ge, High Energy Physics::Experiment, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The response of a scintillation detector with a cylindrical 1.5-inch LaBr3:Ce crystal to incident neutrons has been measured in the energy range En = 2-12 MeV. Neutrons were produced by proton irradiation of a Li target at Ep = 5-14.6 MeV with pulsed proton beams. Using the time-of-flight information between target and detector, energy spectra of the LaBr3:Ce detector resulting from fast neutron interactions have been obtained at 4 different neutron energies. Neutron-induced gamma rays emitted by the LaBr3:Ce crystal were also measured in a nearby Ge detector at the lowest proton beam energy. In addition, we obtained data for neutron irradiation of a large-volume high-purity Ge detector and of a NE-213 liquid scintillator detector, both serving as monitor detectors in the experiment. Monte-Carlo type simulations for neutron interactions in the liquid scintillator, the Ge and LaBr3:Ce crystals have been performed and compared with measured data. Good agreement being obtained with the data, we present the results of simulations to predict the response of LaBr3:Ce detectors for a range of crystal sizes to neutron irradiation in the energy range En = 0.5-10 MeV, Comment: 28 pages, 10 figures, 4 Tables

Published
2015
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31. Excitation and fragmentation in high velocity CnN+- He collisions

Author

A. Jallat, M. Bonnin, N. de Séréville, Marin Chabot, A. Meyer, T Mahajan, Néstor F. Aguirre, Thomas Pino, T. Id Barkach, Manuel Alcamí, A. LePadellec, F. Geslin, Clara Illescas, A. Jorge, K. Béroff, Sergio Díaz-Tendero, T. Hamelin, B Pons, L. Perrot, T.K.C. Le, Thibaut Launoy, Fernando Martín, and F. Hammache

Subjects
History, Materials science, Physique, High velocity, Astronomie, 01 natural sciences, Molecular physics, Computer Science Applications, Education, Fragmentation (mass spectrometry), 0103 physical sciences, 010306 general physics, 010303 astronomy & astrophysics, Excitation
Abstract

We will present measurements and modeling for two aspects of the CnN+ - He collisions (n=1-3, v=2.25 a.u) :cross sections for electronic excitation processes and fragmentation branching ratios for the excited and ionized CnNq+ molecules produced in the collision (q=-1,0,1,2-5)., SCOPUS: cp.j, info:eu-repo/semantics/published

Published
2017
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32. Missing mass spectroscopy of $^{8}$He and $^{10}$He by (d,$^{3}$He) reaction

Author

Franck Delaunay, Hua-Lei Wang, Nagao Kobayashi, L. Nalpas, I. Stefan, J.H. Lee, J. A. Scarpaci, T. Sako, R. J. Chen, E. A. Kuzmin, K. Yoneda, André Palma da Cunha Matta, M. Assié, S. Franchoo, Shuichi Takeuchi, E. Yu. Nikolskii, E. C. Pollacco, S. Boissinot, M. Kurata-Nishimura, N. Imai, Daisuke Suzuki, Takashi Kubo, Didier Beaumel, L. H. Khiem, A. M. Sánchez-Benítez, P. Gangnant, C. Houarner, F. Hammache, V. Lapoux, Hideaki Otsu, Hiroyoshi Sakurai, T. Motobayashi, Ph. Rosier, Julien Gibelin, Yosuke Kondo, A. Obertelli, Y. Kawada, Natalia Timofeyuk, Kazutaka Takahashi, E. Rindel, Nori Aoi, J. F. Libin, H. Baba, M. Takechi, N. de Séréville, R. Wolski, Terutaro Nakamura, F. Saillant, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010308 nuclear & particles physics, Chemistry, Nuclear structure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Mass spectrometry, 01 natural sciences, Resonance (particle physics), transfer reaction, 3. Good health, resonance, 0103 physical sciences, nuclear structure, Mass spectrum, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, Energy (signal processing), Excitation
Abstract

International audience; We present the first missing mass spectrum of the unbound system 10He obtained from one nucleon transfer $^{11}$Li(d,$^{3}$He) reaction at 50 A MeV. We found rather large yields for the $^{6}$He + 4n decay channel especially for higher excitation energy, which suggest the importance of the $^{6}$He + 4n structure in $^{10}$He.

Published
2014
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33. Single-particle strength in neutron-rich $^{71}$Cu from the (d, $^{3}$He) proton pick-up reaction

Author

M. Stanoiu, F. Azaiez, G. Marquínez-Durán, A. Gillibert, P. Morfouace, S. Franchoo, J. A. Scarpaci, C. Louchart, D. Mengoni, D. Sohler, I. Matea, Zsolt Dombrádi, L. Nalpas, J. C. Thomas, Zs. Vajta, N. de Séréville, F. Hammache, S. Boissinot, F. Recchia, M. Assié, L. Caceres, D. R. Napoli, R. Borcea, A. M. Sánchez-Benítez, S. Grévy, B. Fernandez-Dominguez, S. Giron, O. Kamalou, I. Martel-Bravo, V. Lapoux, Didier Beaumel, A. Lepailleur, C. Stodel, Megumi Niikura, O. Sorlin, I. Stefan, L. Lefebvre, J. Elseviers, G. Burgunder, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), GANILEXP, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, History, Proton, Inverse kinematics, 010308 nuclear & particles physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Computer Science Applications, Education, Cross section (physics), Low energy, 0103 physical sciences, Particle, Neutron, Born approximation, Atomic physics, 010306 general physics, Nuclear Experiment
Abstract

Expérience GANIL/MUST2; International audience; We have measured the 72Zn(d, 3He) 71Cu proton pickup reaction in inverse kinematics at 38 MeV/u. A dedicated setup was developed to overcome the experimental challenges posed by the low cross section of the reaction and the low energy of the outgoing 3He particles. The excitation-energy spectrum was reconstructed and spectroscopic factors were obtained after analysis of the angular distributions in the finite-range Distorted-Wave Born Approximation (DWBA). The results show that unlike for the πf5/2 orbital, the πf7/2 single-particle strength is not appreciably affected by the addition of neutrons beyond N = 40.

Published
2014
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34. Experimental study of the two-body spin-orbit force in nuclei

Author

I. Matea, J. Guillot, Toshio Suzuki, Julien Gibelin, G. Burgunder, D. Beaumel, L. Nalpas, A. Obertelli, J. C. Thomas, I. Stefan, S. Giron, Riccardo Raabe, J. Pancin, Takaharu Otsuka, Fairouz Hammache, N. de Séréville, L. Caceres, A. Lepailleur, C. Stodel, S. Grévy, M Moukaddam, A. Gillibert, F. Nowacki, J. A. Scarpaci, O. Sorlin, Eric Clément, J. P. Ebran, A. Matta, S. Franchoo, F. Flavigny, B. Fernández-Domínguez, Alfredo Poves, G. Duchêne, and UAM. Departamento de Física Teórica

Subjects
Physics, Inverse kinematics, 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, Física, 01 natural sciences, medicine.anatomical_structure, Amplitude, 0103 physical sciences, Atomic nucleus, medicine, Orbit (dynamics), Nuclear force, Atomic physics, 010306 general physics, Spin (physics), Constant (mathematics), Nuclear Experiment, Nucleus
Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, Energies and spectroscopic factors of the first 7/2−, 3/2−, 1/2−, and 5/2− states in the 35Si21 nucleus were determined by means of the (d, p) transfer reaction in inverse kinematics at GANIL using the MUST2 and EXOGAM detectors. By comparing the spectroscopic information on the 35Si and 37S isotones, a reduction of the p3/2-p1/2 spin-orbit splitting by about 25% is proposed, while the f7/2-f5/2 spin-orbit splitting seems to remain constant. These features, derived after having unfolded nuclear correlations using shell model calculations, have been attributed to the properties of the two-body spin-orbit interaction, the amplitude of which is derived for the first time in an atomic nucleus. The present results, remarkably well reproduced by using several realistic nucleon-nucleon forces, provide a unique touchstone for the modeling of the spin-orbit interaction in atomic nuclei

Published
2014

35. Sub-barrier fusion cross section measurements with STELLA

Author

Oliver S. Kirsebom, G. Heitz, G. Fruet, F. Haas, C. Stodel, D. G. Jenkins, D. Montanari, P. H. Regan, L. Morris, S. Della Negra, M. Krauth, M. Richer, M. Rudigier, M. Heine, P. Adsley, F. Hammache, P. Dené, S. Courtin, J. Lesrel, A. Meyer, C. Beck, N. de Séréville, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Fusion, 010308 nuclear & particles physics, QC1-999, Detector, Aucun, Stella (software), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Coincidence, Nuclear physics, Cross section (physics), 0103 physical sciences, Background suppression, Heavy ion, 010306 general physics
Abstract

International audience; The experimental setup STELLA (STELlar LAboratory) is designed for the measurement of deep sub-barrier light heavy ion fusion cross sections. For background suppression the γ-particle coincidence technique is used. In this project, LaBr3 detectors from the UK FATIMA (FAst TIMing Array) collaboration are combined with annular silicon strip detectors customized at IPHC-CNRS, Strasbourg, and the setup is located at Andromède, IPN, Orsay. The commissioning of the experimental approach as well as a sub-barrier 12C +12C → 24Mg∗ cross section measurement campaign are carried out.

Published
2017
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36. Limited Asymmetry Dependence of Correlations from Single Nucleon Transfer

Author

A. Shrivastava, E. C. Pollacco, Julien Gibelin, A. Matta, S. Giron, A. Obertelli, F. Hammache, J. Guillot, D. Beaumel, Carlo Barbieri, F. Flavigny, L. Nalpas, Andrea Cipollone, Yutaka Utsuno, S. Boissinot, A. Gillibert, Riccardo Raabe, N. Keeley, A. Signoracci, M. Rejmund, V. Lapoux, A. Corsi, N. de Séréville, G. Burgunder, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), MUST2, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, 010308 nuclear & particles physics, media_common.quotation_subject, Nuclear Theory, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Asymmetry, Nuclear physics, Formalism (philosophy of mathematics), Deuterium, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, 24.50.+g, media_common
Abstract

Single nucleon pickup reactions were performed with a 18.1 MeV/nucleon (14)O beam on a deuterium target. Within the coupled reaction channel framework, the measured cross sections were compared to theoretical predictions and analyzed using both phenomenological and microscopic overlap functions. The missing strength due to correlations does not show significant dependence on the nucleon separation energy asymmetry over a wide range of 37 MeV, in contrast with nucleon removal data analyzed within the sudden-eikonal formalism. ispartof: Physical Review Letters vol:110 issue:12 pages:1-5 ispartof: location:United States status: published

Published
2013
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37. Structure of unbound neutron-rich $^{9}$He studied using single-neutron transfer

Author

N. de Séréville, E. C. Pollacco, N. Keeley, N. A. Orr, S. I. Sidorchuk, W. Mittig, A. Gillibert, T. Roger, H. Iwasaki, J. Guillot, L. Gaudefroy, K. Rusek, Xavier Mougeot, B. Fernández-Domínguez, C. Force, D. Suzuki, Y. Blumenfeld, T. Al Kalanee, V. Lapoux, H. Savajols, S. A. Krupko, P. Roussel-Chomaz, L. Nalpas, Julien Gibelin, D. Beaumel, I. Strojek, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, MUST2, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 21.10.Jx, 21.10.Pc, 21.10.Tg, 25.45.Hi, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, 0103 physical sciences, Mass spectrum, Level structure, Neutron, Nuclear Experiment (nucl-ex), Experimental methods, Atomic physics, 010306 general physics, Ground state, Nuclear Experiment
Abstract

The 8He(d,p) reaction was studied in inverse kinematics at 15.4A MeV using the MUST2 Si-CsI array in order to shed light on the level structure of 9He. The well known 16O(d,p)17O reaction, performed here in reverse kinematics, was used as a test to validate the experimental methods. The 9He missing mass spectrum was deduced from the kinetic energies and emission angles of the recoiling protons. Several structures were observed above the neutron-emission threshold and the angular distributions were used to deduce the multipolarity of the transitions. This work confirms that the ground state of 9He is located very close to the neutron threshold of 8He and supports the occurrence of parity inversion in 9He., Exp\'erience GANIL/SPIRAL1/MUST2

Published
2013
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38. Neutron decay of the Giant Pairing Vibration in15C

Author

Luciano Pandola, F. Azaiez, A. Foti, Francesco Cappuzzello, Diana Carbone, J. A. Scarpaci, M. Assié, Manuela Cavallaro, N. de Séréville, V. Soukeras, O. Sgouros, C. Agodi, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
History, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Neutron scattering, 7. Clean energy, 01 natural sciences, Numen, Charge Exchange, Nuclear Matrix, Education, Nuclear physics, Charge Exchange, Numen, 0103 physical sciences, Neutron detection, Nuclear Matrix, Neutron, Nuclear Experiment, 010306 general physics, Physics, Spectrometer, 010308 nuclear & particles physics, Nuclear structure, Computer Science Applications, Vibration, Pairing, High Energy Physics::Experiment, Atomic physics
Abstract

International audience; The neutron decay of the resonant states of light neutron-rich nuclei is an important and poorly explored property, useful to extract valuable nuclear structure information. The neutron decay of the (15)C resonances populated via the two-neutron transfer reaction (13)C((18)O,(16)O n) at 84 MeV incident energy is studied using an innovative technique which couples the MAGNEX magnetic spectrometer and the EDEN neutron detector array. The data show that the recently observed (15)C Giant Pairing Vibration at 13.7 MeV mainly decays via two-neutron emission.

Published
2016
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39. Emergence of theN=16shell gap inO21

Author

B. Fernández-Domínguez, J. S. Thomas, W. N. Catford, F. Delaunay, S. M. Brown, N. A. Orr, M. Rejmund, M. Labiche, M. Chartier, N. L. Achouri, H. Al Falou, N. I. Ashwood, D. Beaumel, Y. Blumenfeld, B. A. Brown, R. Chapman, N. Curtis, C. Force, G. de France, S. Franchoo, J. Guillot, P. Haigh, F. Hammache, V. Lapoux, R. C. Lemmon, F. Maréchal, A. M. Moro, X. Mougeot, B. Mouginot, L. Nalpas, A. Navin, N. Patterson, B. Pietras, E. C. Pollacco, A. Leprince, A. Ramus, J. A. Scarpaci, N. de Séréville, I. Stephan, O. Sorlin, and G. L. Wilson

Subjects
Physics, Radioactive ion beams, Nuclear and High Energy Physics, Light nucleus, 010308 nuclear & particles physics, 0103 physical sciences, SHELL model, Shell (structure), Atomic physics, 010306 general physics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), 01 natural sciences
Abstract

This is the publisher's version, also available electronically from http://journals.aps.org/prc/abstract/10.1103/PhysRevC.84.011301.

Published
2011
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40. Measurements of nuclearγ-ray line emission in interactions of protons andαparticles with N, O, Ne, and Si

Author

J.-P. Thibaud, J. C. Dalouzy, N. de Séréville, Vincent Tatischeff, S. Ouichaoui, H. Benhabiles-Mezhoud, Jürgen Kiener, A. Coc, F. Dayras, I. Deloncle, F. de Grancey, Livio Lamia, M. G. Pellegriti, J. Duprat, A. Lefebvre-Schuhl, C. Hamadache, and F. de Oliveira

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Alpha particle, Coupling (probability), 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, Production (computer science), Isotopes of silicon, Atomic physics, Nuclear Experiment, 010303 astronomy & astrophysics, Energy (signal processing), Oxygen-16
Abstract

$\ensuremath{\gamma}$-ray production cross sections have been measured in proton irradiations of N, Ne, and Si and $\ensuremath{\alpha}$-particle irradiations of N and Ne. In the same experiment we extracted also line shapes for strong $\ensuremath{\gamma}$-ray lines of $^{16}\mathrm{O}$ produced in proton and $\ensuremath{\alpha}$-particle irradiations of O. For the measurements gas targets were used for N, O, and Ne and a thick foil for Si. All targets were of natural isotopic composition. Beams in the energy range up to 26 MeV for protons and 39 MeV for $\ensuremath{\alpha}$ particles were delivered by the Institut de Physique Nucl\'eaire--Orsay tandem accelerator. The $\ensuremath{\gamma}$ rays were detected with four high-purity Ge detectors in the angular range ${30}^{\ifmmode^\circ\else\textdegree\fi{}}$ to ${135}^{\ifmmode^\circ\else\textdegree\fi{}}$. We extracted 36 cross-section excitation functions for proton reactions and 14 for $\ensuremath{\alpha}$-particle reactions. For the majority of the excitation functions no other data exist to our knowledge. Where comparison with existing data was possible, usually a very good agreement was found. It is shown that these data are very interesting for constraining nuclear reaction models. In particular, the agreement of cross section calculations in the nuclear reaction code talys with the measured data could be improved by adjusting the coupling schemes of collective levels in the target nuclei $^{14}\mathrm{N}$, $^{20,22}\mathrm{Ne}$, and $^{28}\mathrm{Si}$. The importance of these results for the modeling of nuclear $\ensuremath{\gamma}$-ray line emission in astrophysical sites is discussed.

Published
2011
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41. Breakdown of theZ=8Shell Closure in UnboundO12and its Mirror Symmetry

Author

H. Okamura, O. Sorlin, I. Stefan, D. Beaumel, Maya Takechi, P. Roussel-Chomaz, Hidetada Baba, Xavier Mougeot, Shin'ichiro Michimasa, Hironori Iwasaki, D. Suzuki, I. Mukha, S. Franchoo, J. Guillot, L. Nalpas, M. Assié, Fairouz Hammache, J. A. Scarpaci, Hideaki Otsu, A. Gillibert, F. Maréchal, V. Lapoux, A. Ramus, A. Drouart, Hiroyoshi Sakurai, E. C. Pollacco, N. Keeley, Y. Blumenfeld, and N. de Séréville

Subjects
Physics, Nuclear reaction, Proton, 010308 nuclear & particles physics, Nuclear Theory, Hadron, General Physics and Astronomy, Elementary particle, 01 natural sciences, Excited state, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Isotopes of beryllium, Nucleon, Mirror symmetry
Abstract

An excited state in the proton-rich unbound nucleus $^{12}\mathrm{O}$ was identified at 1.8(4) MeV via missing-mass spectroscopy with the $^{14}\mathrm{O}(p,t)$ reaction at $51\text{ }\text{ }A\mathrm{MeV}$. The spin-parity of the state was determined to be ${0}^{+}$ or ${2}^{+}$ by comparing the measured differential cross sections with distorted-wave calculations. The lowered location of the excited state in $^{12}\mathrm{O}$ indicates the breakdown of the major shell closure at $Z=8$ near the proton drip line. This demonstrates the persistence of mirror symmetry in the disappearance of the magic number 8 between $^{12}\mathrm{O}$ and its mirror partner $^{12}\mathrm{Be}$.

Published
2009
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42. Discovery of a New Broad Resonance inNe19: Implications for the Destruction of the Cosmicγ-Ray EmitterF18

Author

A. Coc, M. Stanoiu, I. Stefan, F. Negoita, R. Borcea, Jürgen Kiener, J. C. Dalouzy, F. de Oliveira Santos, A. M. Sánchez-Benítez, P. J. Woods, N. de Séréville, C. Borcea, H. Benhabiles, P. Bourgault, A. Damman, A. Buta, Marialuisa Aliotta, O. Sorlin, L. Achouri, M. G. Pellegriti, Carmen Angulo, F. de Grancey, and Thomas Davinson

Subjects
Physics, Degree (graph theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Zero (complex analysis), General Physics and Astronomy, Resonance, Inelastic scattering, 01 natural sciences, Angular correlation, 0103 physical sciences, Atomic physics, Proton emission, Nuclear Experiment, 010306 general physics, Spin-½
Abstract

Six proton-emitting states in $^{19}\mathrm{Ne}$ were studied through the inelastic scattering reaction $\mathrm{H}(^{19}\mathrm{Ne},p)^{19}\mathrm{Ne}^{*}(p)^{18}\mathrm{F}$. Their energies and widths were derived from the protons detected at zero degree, while proton-proton angular correlations between the detector at zero degree and a segmented annular detector were used to determine their spin value. In addition to the known states, a new broad $J=\frac{1}{2}$ resonance has been evidenced at ${E}_{x}\ensuremath{\approx}7.9\text{ }\text{ }\mathrm{MeV}$, $\ensuremath{\approx}1.45\text{ }\text{ }\mathrm{MeV}$ above the proton emission threshold. By introducing this resonance, the $^{18}\mathrm{F}(p,\ensuremath{\alpha})^{15}\mathrm{O}$ destruction rate in novae is significantly enhanced. This reduces the chance to observe the cosmic $\ensuremath{\gamma}$-ray emission of $^{18}\mathrm{F}$ from novae in space telescopes.

Published
2009
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43. Hydrogen Burning ofO17in Classical Novae

Author

A. Chafa, N. de Séréville, Vincent Tatischeff, F. Garrido, A. Lefebvre-Schuhl, P. Aguer, S. Barhoumi, S. Ouichaoui, J. Kiener, A. Coc, Margarita Hernanz, Jordi José, J. P. Thibaud, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and UCL

Subjects
Hydrogen, nuclear energy level transitions, FOS: Physical sciences, General Physics and Astronomy, Alpha (ethology), chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Astrophysics, proton radiative capture, 7. Clean energy, 01 natural sciences, Omega, alpha particle-nucleus reactions, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, Nucleosynthesis, proton-nucleus reactions, 0103 physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010303 astronomy & astrophysics, novae, Physics, Oxygen-17, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), nucleosynthesis, Resonance, Alpha particle, 26.30.+k, 25.40.Lw, 25.40.Ny, 27.20.+n, chemistry, Excitation
Abstract

We report on the observation of a previously unknown resonance at E=194.1+/-0.6 keV (lab) in the 17-O(p,alpha)14-N reaction, with a measured resonance strength omega_gamma(p,alpha)=1.6+/-0.2 meV. We studied in the same experiment the 17-O(p,gamma)18-F reaction by an activation method and the resonance-strength ratio was found to be omega_gamma(p,alpha)/omega_gamma(p,gamma)=470+/-50. The corresponding excitation energy in the 18-F compound nucleus was determined to be 5789.8+/-0.3 keV by gamma-ray measurements using the 14-N(alpha,gamma)18-F reaction. These new resonance properties have important consequences for 17-O nucleosynthesis and gamma-ray astronomy of classical novae., 4 pages, 4 figures. Accepted for publication in Physical Review Letters

Published
2005
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44. The $^{18}F(p,\alpha)^{15}O$ reaction rate for application to nova $\gamma$-ray emission

Author

A. Coc, E. Berthoumieux, N. de Séréville, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), L. Buchmann, M. Comyn, and J. Thomson

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, FOS: Physical sciences, Resonance, Nova (laser), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Reaction rate, 0103 physical sciences, Nuclear Experiment (nucl-ex), Atomic physics, 010306 general physics, Nuclear Experiment
Abstract

The 18F(p,a)15O reaction is recognized as one of the most important reaction for nova gamma-ray astronomy as it governs the early, Contribution to the Eighth International Symposium on Nuclei in the Cosmos, Vancouver july 19-23. 4 pages and 2 figures

Published
2004
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45. New determinations of gamma-ray line intensities of the Ep = 550 keV and Ep = 1747 keV resonances of the 13-C(p,gamma)14-N reaction

Author

Vincent Tatischeff, I Bailly, A. Bauchet, C. Chapuis, G. Tauzin, I. Deloncle, Jürgen Kiener, M. Gros, Stéphane Schanne, N. de Séréville, Marie-Geneviève Porquet, Bertrand Cordier, and David Attié

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Branching fraction, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, FOS: Physical sciences, Electromagnetic radiation, Spectral line, Particle detector, Semiconductor detector, Atomic physics, Nuclear Experiment (nucl-ex), Nuclear Experiment, Instrumentation, Beam (structure)
Abstract

Gamma-ray angular distributions for the resonances at Ep = 550 keV and 1747 keV of the radiative capture reaction 13-C(p,g)14-N have been measured, using intense proton beams on isotopically pure 13-C targets. Relative intensities for the strongest transitions were extracted with an accuracy of typically five per cent, making these resonances new useful gamma-ray standards for efficiency calibration in the energy range Egamma = 1.6 to 9 MeV., Comment: 17 pages, 6 figures, Nuclear Instruments and Methods, Sec. A, accepted

Published
2003
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46. 16O Coulomb dissociation: towards a new means to determine the 12C+α fusion rate in stars

Author

Jérôme Guillot, Marlete Assunção, N. de Séréville, H. W. Wilschut, Barry Davids, A. Lefebvre, J. Kiener, A.M. van den Berg, H. Laurent, Vincent Tatischeff, F. Fleurot, M.N. Harakeh, A. Willis, V. L. Kravchuk, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Nuclei with 6, Nuclear and High Energy Physics, Breakup and momentum distributions, 010308 nuclear & particles physics, 97.10.Cv, 26.20.+f, 24.10.Eq, 27.20.+n, 25.70.De, 25.60.Gc, Coulomb excitation, Coupled-channel and distorted-wave models, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Stellar structure, interiors, evolution, nucleosynthesis, ages, Hydrostatic stellar nucleosynthesis, Dipole, Nucleosynthesis, Excited state, 0103 physical sciences, Quadrupole, Coulomb, Atomic physics, 010306 general physics, Ground state, Nuclear Experiment, Excitation
Abstract

NESTER; A feasibility study was made of an important aspect of the Coulomb-dissociation method, which has been proposed for the determination of the rate of the astrophysically important $^{12}C(\alpha, \gamma)^{16}O$ reaction. A crucial aspect is the disentanglement of nuclear and Coulomb interactions on one hand and the separation of dipole and quadrupole contributions on the other. As a first step the resonant breakup via two well-known 2$^+$ states of $^{16}O$ was measured. The differential cross section of $^{208}Pb(^{16}O, ^{16}O*)^{208}Pb$ and the angular correlations of the fragments $^{12}C$ and $\alpha$ in the center of mass were measured and compared to theoretical predictions calculated in DWBA and the coupled-channel method. The best agreement was found for the state at 11.52 MeV associated to a one-step excitation from the ground state, while the 9.84 MeV requires coupling to the first-excited 2$^+$ state and is not well described.

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47. Compton Large Area Silicon Timing Tracker for Cosmic Vision M3

Author

E. Parizot, A. Creusot, W. Bertoli, W. Hermsen, Torsten Neubert, J. A. Zurita Heras, Neil Gehrels, Piotr Orleanski, Y.A. Gallant, J. M. Brom, Alexandre Marcowith, Isabel Caballero, Johann Cohen-Tanugi, D. Gotz, Frédéric Daigne, Tomasz Bulik, T. Pradier, Michel Tagger, C. Hamadache, Lucien Kuiper, U. Goerlach, Luke O'c. Drury, Søren Brandt, Jean-Louis Pinçon, A. M. Bykov, Olivier Limousin, V. Tatischeff, Philippe Laurent, F. Lebrun, R. Walter, Regis Terrier, M. Denis, Simona Soldi, Shin Watanabe, Volker Beckmann, J. Kiener, Carl Budtz-Jørgensen, C. Olivetto, N. de Séréville, Matthieu Renaud, Felix Aharonian, S. Schanne, Giovanni Lamanna, F. Mattana, APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie de l'environnement (LPCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules)

Subjects
Physics, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Cosmic Vision, media_common.quotation_subject, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Antenna aperture, Polarimetry, Astronomy, 7. Clean energy, Particle acceleration, Nucleosynthesis, Sky, Orbit (dynamics), Sensitivity (control systems), media_common
Abstract

International audience; Proposed in response to the ESA call for the third Medium size mission (M3), CAPSiTT is a small mission designed for a 3-year survey of the non-thermal high energy sky from an equatorial LEO orbit. With a large effective area and a very wide field of view, its single instrument, a silicon tracker, provides good imaging, spectroscopic and polarimetric capabilities with a sensitivity 10-100 times better than COMPTEL. Nucleosynthesis and particle acceleration mechanisms in various sites are the main scientific topics addressed by CAPSiTT.

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