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303 results on '"Dessagne P."'

1. The neutrons for science facility at SPIRAL-2

Author

Ledoux X., Aïche M., Avrigeanu M., Avrigeanu V., Balanzat E., Ban-d'Etat B., Ban G., Bauge E., Bélier G., Bém P., Borcea C., Caillaud T., Chatillon A., Czajkowski S., Dessagne P., Doré D., Fischer U., Frégeau M.O., Grinyer J., Guillous S., Gunsing F., Gustavsson C., Henning G., Jacquot B., Jansson K., Jurado B., Kerveno M., Klix A., Landoas O., Lecolley F.R., Lecouey J.L., Majerle M., Marie N., Materna T., Mrázek J., Negoita F., Novák J., Oberstedt S., Oberstedt A., Panebianco S., Perrot L., Plompen A.J.M., Pomp S., Prokofiev A.V., Ramillon J.M., Farget F., Ridikas D., Rossé B., Sérot O., Simakov S.P., Šimečková E., Štefánik M., Sublet J.C., Taïeb J., Tarrío D., Tassan-Got L., Thfoin I., and Varignon C.

Subjects
Physics, QC1-999
Abstract

Numerous domains, in fundamental research as well as in applications, require the study of reactions induced by neutrons with energies from few MeV up to few tens of MeV. Reliable measurements also are necessary to improve the evaluated databases used by nuclear transport codes. This energy range covers a large number of topics like transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors. A new facility called Neutrons For Science (NFS) is being built for this purpose on the GANIL site at Caen (France). NFS is composed of a pulsed neutron beam for time-of-flight facility as well as irradiation stations for cross-section measurements. Neutrons will be produced by the interaction of deuteron and proton beams, delivered by the SPIRAL-2 linear accelerator, with thick or thin converters made of beryllium or lithium. Continuous and quasi-mono-energetic spectra will be available at NFS up to 40 MeV. In this fast energy region, the neutron flux is expected to be up to 2 orders of magnitude higher than at other existing time-of-flight facilities. In addition, irradiation stations for neutron-, proton- and deuteron-induced reactions will allow performing cross-section measurements by the activation technique. After a description of the facility and its characteristics, the experiments to be performed in the short and medium term will be presented.

Published
2017
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2. Towards improvement of the 238U level scheme using γ-spectroscopy of the (n, n’γ) reaction

Author

Chatel Carole, Wilson Jonathan, Dessagne Philippe, Henning Greg, and Kerveno Maëlle

Subjects
Physics, QC1-999
Abstract

Better knowledge of the neutron population in reactors is crucial to improve the accuracy of neutronics simulations of present day or future reactor cores. This population is partially driven by (n, xn) reactions. However, the cross sections of these reactions are not precisely known. This is particularly true for the 238U(n, n’γ) cross section, which is on the High Priority Request List. One method to measure this cross section is to use the prompt γ-ray spectroscopy coupled to time-of-flight measurements. This allows the total (n, n’) cross section to be inferred from the measured (n, xnγ) cross sections and the level scheme information. However, the knowledge of the 238U level scheme is still very incomplete, so an initiative to experimentally revisit the 238U structure has been launched using γ-γ coincidences spectroscopy. The v-Ball γ-spectrometer was coupled to the LICORNE directional neutron source of the ALTO facility, allowing study of inelastic scattering on 238U via γ-γ coincidences. The analysis of data obtained during the first v-Ball campaign was performed using the Radware escl8r software. At the present time, 73 γ-transitions and 50 levels registered in ENSDF have been confirmed and 120 new γ-transitions and 50 new levels have been found.

Published
2024
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3. Producing uncertainties and covariance matrix from intermediate data using a Monte-Carlo method

Author

Henning Greg, Claeys François, Dari Bako Nicolas, Dessagne Philippe, and Kerveno Maëlle

Subjects
Physics, QC1-999
Abstract

The necessary improvement of evaluated nuclear data for nuclear applications development is possible through new and high quality experimental measurements. In particular, improving (n, n’) cross section evaluations for fast neutrons is a goal of interest for new reactor fuel cycles, such as 232Th/233U or 238U/239Pu. Our group at CNRS-IPHC developed an experimental program to measure (n, n’γ) cross section using prompt γ-ray spectroscopy and neutron energy determination by time-of-flight with a focus on reaching the highest achievable level of accuracy. The collected partial cross sections can then be used to infer the total (n, n’) one and contribute to evaluation improvement. The extraction of the exclusive (n, n’γ) cross sections from the recorded data involves using many parameters and processing that may introduce uncertainties and correlations. In that case, the usual method for combining and computing uncertainties based on the perturbation theory can be long and complex. It also makes the calculation of covariance hard and the inclusion of some unusual forms of uncertainty even more difficult. To overcome this issue, we developed a process relying on random sampling methods that processes intermediate analysis data to compute cross sections, uncertainties and covariance. As a benchmark, we used this Monte Carlo method on 232Th, 233U and 238U data and reproduced the central values and uncertainties calculated using the analytical method, while also producing covariance matrices for (n, n’γ) cross sections. For particular cases, the random sampling method is able to produce uncertainties that better reflect the input data, compared to the analytical method.

Published
2024
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4. Microscopic modeling of direct pre-equilibrium emission: Impact on exclusive and inclusive (n,xn) and fission channels

Author

Dupuis Marc, Capote Roberto, Kawano Toshihiko, Kerveno Maëlle, Dessagne Philippe, Henning Grégoire, and Hilaire Stéphane

Subjects
Physics, QC1-999
Abstract

We report on a microscopic modeling of the first order of multistep direct emission based on one phonon excitations, given by the QRPA model, and an effective in-medium nucleon nucleon interaction, described within the JLM folding model. The results of our coupled channels framework for deformed target are illustrated in the case of low energy discrete state excitations in 152Sm. Pre-equilibrium predictions and their impact on inclusive and exclusive (n,xn) cross sections and fission cross sections are discussed for actinides. We discuss the importance of i) collective excitations to describe the neutron emission spectra and of ii) spin distribution of the residual nucleus formed after the neutron pre-equilibrium emission, that is a key ingredient to model the residual nucleus decay.

Published
2024
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5. Normal and intruder configurations in $^{34}$Si populated in the $\beta^-$ decay of $^{34}$Mg and $^{34}$Al

Author

Lica, R., Rotaru, F., Borge, M. J. G., Grevy, S., Negoita, F., Poves, A., Sorlin, O., Andreyev, A. N., Borcea, R., Costache, C., De Witte, H., Fraile, L. M., Greenlees, P. T., Huyse, M., Ionescu, A., Kisyov, S., Konki, J., Lazarus, I., Madurga, M., Marginean, N., Marginean, R., Mihai, C., Mihai, R. E., Negret, A., Nowacki, F., Page, R. D., Pakarinen, J., Pucknell, V., Rahkila, P., Rapisarda, E., Serban, A., Sotty, C. O., Stan, L., Stanoiu, M., Tengblad, O., Turturica, A., Van Duppen, P., Warr, N., Dessagne, Ph., Stora, T., Borcea, C., Calinescu, S., Daugas, J. M., Filipescu, D., Kuti, I., Franchoo, S., Gheorghe, I., Morfouace, P., Morel, P., Mrazek, J., Pietreanu, D., Sohler, D., Stefan, I., Suvaila, R., Toma, S., and Ur, C. A.

Subjects
Nuclear Experiment
Abstract

The structure of $^{34}$Si was studied through $\gamma$ spectroscopy separately in the $\beta^-$ decays of $^{34}$Mg and $^{34}$Al at the ISOLDE facility of CERN. Different configurations in $^{34}$Si were populated independently from the two recently identified $\beta$-decaying states in $^{34}$Al having spin-parity assignments $J^\pi = 4^-$ dominated by the normal configuration $\pi (d_{5/2})^{-1} \otimes \nu (f_{7/2})$ and $J^\pi = 1^+$ by the intruder configuration $\pi (d_{5/2})^{-1} \otimes \nu (d_{3/2})^{-1}(f_{7/2})^{2}$. The paper reports on spectroscopic properties of $^{34}$Si such as an extended level scheme, spin and parity assignments based on log($ft$) values and $\gamma$-ray branching ratios, absolute $\beta$ feeding intensities and neutron emission probabilities. A total of 11 newly identified levels and 26 transitions were added to the previously known level scheme of $^{34}$Si. Large scale shell-model calculations using the {\sc sdpf-u-mix} interaction, able to treat higher order intruder configurations, are compared with the new results and conclusions are drawn concerning the predictive power of {\sc sdpf-u-mix}, the $N=20$ shell gap, the level of mixing between normal and intruder configurations for the 0$_1^+$, 0$_2^+$ and 2$_1^+$ states and the absence of triaxial deformation in $^{34}$Si.

Published
2019
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6. Fusion and breakup fusion of6Li with194Pt at energies around coulomb barrier

Author

C. .. Petrone, S. .. Calinescu, C. .. Borcea, A. .. Buta, R. .. Borcea, R. .. Margineanu, A. .. Negret, A. .. Olacel, F. .. Rotaru, M. .. Stanoiu, G. .. Suliman, Yu. E. Penionzhkevich, Yu. G. Sobolev, S. M. Lukyanov, N. K. Skobelev, M. P. Ivanov, Ph. .. Dessagne, and M. .. Kerveno

Subjects
Physics, QC1-999
Abstract

Results for fusion and breakup fusion reaction ( 6 Li+ 194 Pt) are presented and compared with other experimental data and model calculations. A strong isotopic effect is observed when comparing our data with results from ( 6 Li+ 198 Pt)

Published
2021
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7. The past and the future of the GAINS spectrometer @ GELINA

Author

Olacel Adina, Borcea Catalin, Boromiza Marian, Dessagne Philippe, Henning Greg, Kavatsyuk Myroslav, Kalantar-Nayestanaki Nasser, Kerveno Maëlle, Negret Alexandru, Nyman Markus, Oprea Andreea, Paradela Carlos, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

GAINS (Gamma Array for Inelastic Neutron Scattering), currently installed at the GELINA (Geel Electron Linear Accelerator) neutron source of the EC-JRC (European Commission-Joint Research Centre), is one of the best instruments available worldwide for measuring high resolution, low uncertainty neutron inelastic cross-section data relevant for both fundamental research and nuclear physics applications (like Generation IV facilities). It features 12 HPGe detectors coupled with a 235U fission chamber for neutron flux monitoring. The paper presents a short history of the GAINS development over the years and reviews some of the main experimental results together with plans for future experiments.

Published
2023
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8. On the need for precise nuclear structure data for high quality (n, n’γ) cross-section measurements

Author

Henning Greg, Kerveno Maëlle, Dessagne Philippe, Claeys François, Dari Bako Nicolas, Dupuis Marc, Hilaire Stéphane, Romain Pascal, de Saint Jean Cyrille, Capote Roberto, Boromiza Marian, Olacel Adina, Negret Alexandru, Borcea Catalin, Plompen Arjan, Paradela Dobarro Carlos, and Nyman Markus

Subjects
Physics, QC1-999
Abstract

The necessary improvement of evaluated nuclear data for nuclear applications development is possible through new and high-quality measurements, often combined with appropriate nuclear-reaction modelling. In particular, improving inelastic cross-section evaluations requires new and high-quality data. We measure (n, n’γ) cross-sections using prompt γ-ray spectroscopy and neutron energy determination by time-of-flight. To extract, from these partial data, the total inelastic cross-section, we rely on theoretical model as well as nuclear structure data such as γ ray emission probabilities. This structure information, tabulated in databases, comes with uncertainty. This directly affects the precision of our results, regardless of how good the measurement is. In this paper, we will present the issue of limited precision structure data and its impact on nuclear reaction data quality in the case of neutron inelastic scattering measurements. We will also discuss how to foresee and mitigate the issue.

Published
2023
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9. Measurement of partial (n, n’γ) reaction cross-sections on highly radioactive nuclei of interest for energy production

Author

Claeys François, Dessagne Philippe, Kerveno Maëlle, De Saint Jean Cyrille, Borcea Catalin, Boromiza Marian, Capote Roberto, Dari Bako Nicolas, Dupuis Marc, Henning Greg, Hilaire Stéphane, Negret Alexandru, Noguère Gilles, Nyman Markus, Olacel Adina, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

In the context of the development of Gen. IV nuclear reactors, the GIF (Generation IV. International Forum) has selected six innovative technologies. Among them, one can highlight the concept of breeding for 232Th/233U and 238U/239Pu fuel cycles. But those nuclei, crucial for such cycles, suffer from a lack of precise knowledge (nuclear structure, reaction cross sections). In particular, it has been demonstrated that neutron inelastic scattering reaction cross sections are not known with sufficient precision for the isotopes 238U and 239Pu, and not known at all experimentally for 233U. In order to perform simulations of innovative reactor cores for the development of those technologies, the knowledge of the reaction cross section has to be improved which implies that new measurements have to be done. The GRAPhEME (GeRmanium array for Actinides PrEcise MEasurements) experimental setup, developed by the IPHC laboratory from CNRS and installed at the EC-JRC-Geel GELINA facility is a powerful tool to answer this need [1, 2]. Combining the prompt γ-ray spectroscopy and the time-of-flight methods, it measures partial (n, xnγ) reaction cross sections. This paper reports on the improvements made on the GRAPhEME setup and data analysis methodology to tackle the challenge of (n, xnγ) cross section measurements on high activity actinides. Results obtained so far on 233U are presented compared to TALYS calculations.

Published
2023
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10. Neutron-induced inelastic γ-production cross sections on 58,60,64Ni

Author

Boromiza Marian, Olacel Adina, Borcea Catalin, Dessagne Philippe, Henning Greg, Kerveno Maëlle, Negret Alexandru, Nyman Markus, Oprea Andreea, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

This paper reports partial results of a (n, n’γ) measurement on nickel. The inelastic channel was measured using the Gamma Array for Inelastic Neutron Scattering (GAINS) spectrometer at the 100-m measurement cabin of the Geel Electron Linear Accelerator (GELINA) neutron source of the European Commission’s Joint Research Centre (EC-JRC) in Geel, Belgium. Using γ spectroscopy, we were able to extract angle-integrated production cross sections for several γ rays but we report here only the results for the main transition in 58Ni. We discuss however in detail the observed discrepancy between our data and other experiments (especially the work of Voss et al.). We also shortly comment on the quality of the neutron-target optical model potential in describing the inelastic data in this mass region. The calculations were performed using the talys 1.9 code in the default settings.

Published
2023
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11. Measurement of 183W(n, n’γ) and (n, 2nγ) cross-sections (preliminary)

Author

Henning Greg, Maëlle Kerveno, Dessagne Philippe, Claeys François, Dari Bako Nicolas, Dupuis Marc, Hilaire Stephane, Romain Pascal, de Saint Jean Cyrille, Capote Roberto, Boromiza Marian, Olacel Adina, Negret Alexandru, Borcea Catalin, Plompen Arjan, Paradela Dobarro Carlos, Nyman Markus, Drohé Jean-Claude, and Wynants Ruud

Subjects
Physics, QC1-999
Abstract

The necessary improvement of evaluated nuclear databases for appplication will be achieved with improvement of models and new, precise data. In particular, the effect of inelastic neutrons scattering can be of importance for reactors. In order to test the models, we performed measurement of (n, n’γ) and (n, 2nγ) cross-sections on 183W. These data will help constrain the calculation codes and ensure a better evaluation of the total (n, xn) cross section. The experimental setup and the data analysis method will be presented. The preliminary experimental results for the 183W isotope will be compared to predictions from Talys nuclear reaction code.

Published
2023
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12. Using the Monte-Carlo method to analyze experimental data and produce uncertainties and covariances

Author

Henning Greg, Kerveno Maëlle, Dessagne Philippe, Claeys François, Dari Bako Nicolas, Dupuis Marc, Hilaire Stephane, Romain Pascal, de Saint Jean Cyrille, Capote Roberto, Boromiza Marian, Olacel Adina, Negret Alexandru, Borcea Catalin, Plompen Arjan, Paradela Dobarro Carlos, Nyman Markus, Drohé Jean-Claude, and Wynants Ruud

Subjects
Physics, QC1-999
Abstract

The production of useful and high-quality nuclear data requires measurements with high precision and extensive information on uncertainties and possible correlations. Analytical treatment of uncertainty propagation can become very tedious when dealing with a high number of parameters. Even worse, the production of a covariance matrix, usually needed in the evaluation process, will require lenghty and error-prone formulas. To work around these issues, we propose using random sampling techniques in the data analysis to obtain final values, uncertainties and covariances and for analyzing the sensitivity of the results to key parameters. We demonstrate this by one full analysis, one partial analysis and an analysis of the sensitivity to branching ratios in the case of (n,n’γ) cross section measurements.

Published
2023
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13. A new measurement on 56Fe(n,inl) using GAINS@GELINA

Author

Negret Alexandru, Borcea Catalin, Boromiza Marian, Claeys François, Dessagne Philippe, Fontana Cristiano, Henning Greg, Kalantar-Nayestanaki Nasser, Kavatsyuk Myroslav, Kerveno Maelle, Nyman Markus, Olacel Adina, Oprea Andreea, Paradela Carlos, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

The extended dataset of 56Fe(n,n’γ) cross sections measured by our group more than a decade ago at GELINA (Geel Linear Accelerator) was used in many recent evaluations like ENDF, JEFF and CIELO. Despite the special measures we took to ensure reliability and accuracy, concerns were raised by various groups with regard to several features of this dataset (absolute normalization and/or shape) and therefore the 56Fe(n,inl) cross section is still under the evaluation by the International Nuclear Data Evaluation Network (INDEN). Consequently, a new experiment is now under preparation aiming to take advantage of the numerous experimental improvements of the GAINS (Gamma Array for Inelastic Neutron Scattering) setup implemented over the years. While γ spectroscopy combined with the time-of-flight method will remain the main technique involved, several other experimental details will differ substantially.

Published
2023
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14. GRAPhEME: Performances, achievements (@EC-JRC/GELINA) and future (@GANIL/SPIRAL2/NFS)

Author

Kerveno Maëlle, Borcea Catalin, Boromiza Marian, Capote Roberto, Claeys François, Dari Bako Nicolas, De Saint Jean Cyrille, Dessagne Philippe, Drohé Jean Claude, Dupuis Marc, Henning Greg, Hilaire Stéphane, Kawano Toshihiko, Negret Alexandru, Nyman Markus, Olacel Adina, Paradela Carlos, Plompen Arjan, and Wynants Ruud

Subjects
Physics, QC1-999
Abstract

GRAPhEME is a γ-spectrometer developed by CNRS/IPHC Strasbourg (France), in collaboration with EC-JRC Geel (Belgium) and IFIN-HH Bucharest (Romania). With its 6 High Purity Planar Germanium detectors and one fission chamber, GRAPhEME, installed at the EC-JRC GELINA facility, was optimized for measurements of accurate (n, xnγ) cross sections on actinides. The experimental methodology is based on the prompt γ-ray spectroscopy coupled to time-of-flight measurements. In this paper, we present an overview of fifteen years of experiments with GRAPhEME at EC-JRC GELINA facility, illustrated by main achievements to highlight the performances reached by our spectrometer. Beyond the experimental work, a close collaboration with theoreticians has emerged allowing the use of the data produced with GRAPhEME to test and constraint nuclear reaction codes like TALYS, CoH and EMPIRE. In a near future, GRAPhEME will be available to start measurement campaigns at the new neutron beam facility SPIRAL2/NFS. There, studies of (n, 2n) and (n, 3n) reactions will be possible and will complete the work done at EC-JRC GELINA on (n, n ) reactions. Despite the amount of cross section data provided by GRAPhEME up to now, the prompt γ-ray spectroscopy method presents some weaknesses that our collaboration tries to overcome. This goes through new calculation schemes based on theoretical modeling constrained on experimental data to infer the total (n, xn) cross section, new instrument to measure conversion electrons but also by being proactive in dissemination activities to make the nuclear structure community aware of our needs about new accurate nuclear structure information on actinides.

Published
2023
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15. Deformation of the N=Z nucleus 76Sr using beta-decay studies

Author

Nacher, E., Algora, A., Rubio, B., Tain, J. L., Cano-Ott, D., Courtin, S., Dessagne, Ph., Marechal, F., Miehe, Ch., Poirier, E., Borge, M. J. G., Escrig, D., Jungclaus, A., Sarriguren, P., Tengblad, O., Gelletly, W., Fraile, L. M., and Scornet, G. Le

Subjects
Nuclear Experiment
Abstract

A novel method of deducing the deformation of the N=Z nucleus 76Sr is presented. It is based on the comparison of the experimental Gamow-Teller strength distribution B(GT) from its beta decay with the results of QRPA calculations. This method confirms previous indications of the strong prolate deformation of this nucleus in a totally independent way. The measurement has been carried out with a large Total Absorption gamma Spectrometer, "Lucrecia", newly installed at CERN-ISOLDE., Comment: Accepted in Phys. Rev. Letters

Published
2004
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16. Search for neutral MSSM Higgs bosons at LEP

Author

Schael, S, Barate, R, Brunelière, R, De Bonis, I, Decamp, D, Goy, C, Jézéquel, S, Lees, J-P, Martin, F, Merle, E, Minard, M-N, Pietrzyk, B, Trocmé, B, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Martinez, M, Pacheco, A, Ruiz, H, Colaleo, A, Creanza, D, De Filippis, N, de Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Barklow, T, Buchmüller, O, Cattaneo, M, Clerbaux, B, Drevermann, H, Forty, RW, Frank, M, Gianotti, F, Hansen, JB, Harvey, J, Hutchcroft, DE, Janot, P, Jost, B, Kado, M, Mato, P, Moutoussi, A, Ranjard, F, Rolandi, L, Schlatter, D, Teubert, F, Valassi, A, Videau, I, Badaud, F, Dessagne, S, Falvard, A, Fayolle, D, Gay, P, Jousset, J, Michel, B, Monteil, S, Pallin, D, Pascolo, JM, Perret, P, Hansen, JD, Hansen, JR, Hansen, PH, Kraan, AC, Nilsson, BS, Kyriakis, A, Markou, C, Simopoulou, E, Vayaki, A, Zachariadou, K, Blondel, A, Brient, J-C, Machefert, F, Rougé, A, Videau, H, Ciulli, V, and Focardi, E

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract

The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric standard model (MSSM). The data of the four collaborations are statistically combined and examined for their consistency with the background hypothesis and with a possible Higgs boson signal. The combined LEP data show no significant excess of events which would indicate the production of Higgs bosons. The search results are used to set upper bounds on the cross-sections of various Higgs-like event topologies. The results are interpreted within the MSSM in a number of "benchmark" models, including CP-conserving and CP-violating scenarios. These interpretations lead in all cases to large exclusions in the MSSM parameter space. Absolute limits are set on the parameter tan β and, in some scenarios, on the masses of neutral Higgs bosons.

Published
2006

21. Measurement of $^{238}\mathrm{U}(n,{n}^{{'}}{\gamma}$) cross section data and their impact on reaction models

Author

Kerveno, M., Dupuis, M., Bacquias, A., Belloni, F., Bernard, D., Borcea, C., Boromiza, M., Capote, R., De Saint Jean, C., Dessagne, P., Drohé, J., Henning, G., Hilaire, S., Kawano, T., Leconte, P., Nankov, N., Negret, A., Nyman, M., Olacel, A., Plompen, A., Romain, P., Rouki, C., Rudolf, G., Stanoiu, M., Wynants, R., Département Recherches Subatomiques (DRS-IPHC), 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Détection et de Géophysique (CEA) (LDG), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Commission - Joint Research Centre [Geel] (JRC), Horia Hulubei National Institute for Physics and Nuclear Engineering, 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)-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), Laboratoire Matière sous Conditions Extrêmes (LMCE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Etudes de PHysique (LEPH), Service de Physique des Réacteurs et du Cycle (SPRC), Département Etude des Réacteurs (DER), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Etude des Réacteurs (DER), International Atomic Energy Agency [Vienna] (IAEA), Los Alamos National Laboratory (LANL), European Project: 34186,EFNUDAT, European Project: 211499,EC:FP7:Fission,FP7-Fission-2007,EUFRAT(2008), European Project: 249671,EC:FP7:Fission,FP7-Fission-2009,ANDES(2010), European Project: 605203,EC:FP7:Fission,FP7-Fission-2013,CHANDA(2013), European Project: 847552,SANDA, and European Project: 516487,NUDAME

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; A better knowledge of ($n,xn$) reaction cross sections is important for both reaction modeling and energy applications. This article focuses on inelastic scattering of neutrons off $^{238}$U for which improvements are needed to better constrain evaluations and solve inconsistencies in nuclear power reactor calculations. A new precise measurement of ($n,xn\gamma$) reaction cross sections on $^{238}$U has been performed at the GELINA (Geel Electron LINear Accelerator) neutron facility operated by EC-JRC-Geel (Belgium) with the GRAPhEME (GeRmanium array for Actinides PrEcise MEasurements) setup. The prompt $\gamma$-ray spectroscopy method coupled to time-of-flight measurements is used to extract ($n,xn\gamma$) cross section values which can be further combined to infer the total neutron inelastic scattering cross section. Cross section data for 18 $\gamma$ transitions (five never measured before) are presented and compared to the data in the literature. Emphasis is especially given to the uncertainty determination to produce partial cross section data as accurate as possible. Due to intrinsic limitations of the experimental method, the use of additional nuclear structure information coupled with theoretical modeling is required to determine the total ($n,n′$) cross section over the whole neutron energy range. We have investigated modeling aspects of the $^{238}$U($n,n$'$\gamma$) cross sections related to the description of compound nucleus and preequilibirum mechanisms as well as the discrete part of nuclear structure. Through comparison between experimental and calculated ($n,n$'$\gamma$) cross sections, we pinpoint inaccuracies in the description of specific reaction mechanisms and challenge recently implemented models. This helps improving the whole modeling of the ($n,n′$) reaction.

Published
2021

22. Measurement of U238(n,n′γ ) cross section data and their impact on reaction models

Author

Kerveno, M., primary, Dupuis, M., additional, Bacquias, A., additional, Belloni, F., additional, Bernard, D., additional, Borcea, C., additional, Boromiza, M., additional, Capote, R., additional, De Saint Jean, C., additional, Dessagne, P., additional, Drohé, J. C., additional, Henning, G., additional, Hilaire, S., additional, Kawano, T., additional, Leconte, P., additional, Nankov, N., additional, Negret, A., additional, Nyman, M., additional, Olacel, A., additional, Plompen, A. J. M., additional, Romain, P., additional, Rouki, C., additional, Rudolf, G., additional, Stanoiu, M., additional, and Wynants, R., additional

Published
2021
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23. Search for neutral Higgs bosons decaying into four taus at LEP2

Author

Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jézéquel, S., Lees, J.-P., Martin, F., Merle, E., Minard, M.-N., Pietrzyk, B., Trocmé, B., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez-Bosman, M., Garrido, Ll., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmüller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R. W., Frank, M., Gianotti, F., Hansen, J. B., Harvey, J., Hutchcroft, D. E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J. M., Perret, P., Hansen, J. D., Hansen, J. R., Hansen, P. H., Kraan, A. C., Nilsson, B. S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J.-C., Machefert, F., Rougé, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G. P., Passalacqua, L., Kennedy, J., Lynch, J. G., Negus, P., O’Shea, V., Thompson, A. S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E. E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P. J., Girone, M., Marinelli, N., Nowell, J., Rutherford, S. A., Sedgbeer, J. K., Thompson, J. C., White, R., Ghete, V. M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C. K., Clarke, D. P., Ellis, G., Finch, A. J., Foster, F., Hughes, G., Jones, R. W. L., Pearson, M. R., Robertson, N. A., Sloan, T., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Lemaitre, V., Blumenschein, U., Hölldorfer, F., Jakobs, K., Kayser, F., Müller, A.-S., Renk, B., Sander, H.-G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Männer, W., Moser, H.-G., Settles, R., Villegas, M., Wolf, G., Beacham, J., Cranmer, K., Yavin, I., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J.-F., Heusse, Ph., Jacholkowska, A., Serin, L., Veillet, J.-J., Azzurri, P., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P. G., Awunor, O., Blair, G. A., Cowan, G., Garcia-Bellido, A., Green, M. G., Medcalf, T., Misiejuk, A., Strong, J. A., Teixeira-Dias, P., Clifft, R. W., Edgecock, T. R., Norton, P. R., Tomalin, I. R., Ward, J. J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M.-C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Litke, A. M., Taylor, G., Booth, C. N., Cartwright, S., Combley, F., Hodgson, P. N., Lehto, M., Thompson, L. F., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S. R., Berkelman, K., Ferguson, D. P. S., Gao, Y., González, S., Hayes, O. J., Hu, H., Jin, S., Kile, J., McNamara, III, P. A., Nielsen, J., Pan, Y. B., von Wimmersperg-Toeller, J. H., Wiedenmann, W., Wu, J., Lan Wu, Sau, Wu, X., Zobernig, G., Dissertori, G., and The ALEPH collaboration

Published
2010
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24. Treatment times, functional outcome, and hemorrhage rates after switching to tenecteplase for stroke thrombolysis: Insights from the TETRIS registry

Author

Gerschenfeld, Gaspard, Liegey, Jean-Sébastien, Laborne, François-Xavier, Yger, Marion, Lyon, Victoire, Checkouri, Thomas, Tricard-Dessagne, Bertille, Marnat, Gaultier, Clarençon, Frédéric, Chausson, Nicolas, Turc, Guillaume, Sibon, Igor, Alamowitch, Sonia, and Olindo, Stéphane

Abstract

Introduction: The encouraging efficacy and safety data on intravenous thrombolysis with tenecteplase in ischemic stroke and its practical advantages motivated our centers to switch from alteplase to tenecteplase. We report its impact on treatment times and clinical outcomes.Methods: We retrospectively analyzed clinical and procedural data of patients treated with alteplase or tenecteplase in a comprehensive (CSC) and a primary stroke center (PSC), which transitioned respectively in 2019 and 2018. Tenecteplase enabled in-imaging thrombolysis in the CSC. The main outcomes were the imaging-to-thrombolysis and thrombolysis-to-puncture times. We assessed the association of tenecteplase with 3-month functional independence and parenchymal hemorrhage (PH) with multivariable logistic models.Results: We included 795 patients, 387 (48.7%) received alteplase and 408 (51.3%) tenecteplase. Both groups (tenecteplase vs alteplase) were similar in terms of age (75 vs 76 years), baseline NIHSS score (7 vs 7.5) and proportion of patients treated with mechanical thrombectomy (24.1% vs 27.5%). Tenecteplase patients had shorter imaging-to-thrombolysis times (27 vs 36 min, p< 0.0001) mainly driven by patients treated in the CSC (22 vs 38 min, p< 0.001). In the PSC, tenecteplase patients had shorter thrombolysis-to-puncture times (84 vs 95 min, p= 0.02), reflecting faster interhospital transfer for MT. 3-month functional independence rate was higher in the tenecteplase group (62.8% vs 53.4%, p< 0.01). In the multivariable analysis, tenecteplase was significantly associated with functional independence (ORa1.68, 95% CI 1.15–2.48, p< 0.01), but not with PH (ORa0.68, 95% CI 0.41–1.12, p= 0.13).Conclusion: Switch from alteplase to tenecteplase reduced process times and may improve functional outcome, with similar safety profile.

Published
2022
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25. Fermion pair production in e+e- collisions at 189–209 GeV and constraints on physics beyond the standard model

Author

Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jézéquel, S., Lees, J.-P., Martin, F., Merle, E., Minard, M.-N., Pietrzyk, B., Trocmé, B., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., De Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmüller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R.W., Frank, M., Gianotti, F., Hansen, J.B., Harvey, J., Hutchcroft, D.E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J.M., Perret, P., Hansen, J.D., Hansen, J.R., Hansen, P.H., Kraan, A.C., Nilsson, B.S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J.-C., Machefert, F., Rougé, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G.P., Passalacqua, L., Kennedy, J., Lynch, J.G., Negus, P., O’Shea, V., Thompson, A.S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E.E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P.J., Girone, M., Hill, R.D., Marinelli, N., Nowell, J., Rutherford, S.A., Sedgbeer, J.K., Thompson, J.C., White, R., Ghete, V.M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C.K., Clarke, D.P., Ellis, G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Pearson, M.R., Robertson, N.A., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Lemaitre, V., Blumenschein, U., Hölldorfer, F., Jakobs, K., Kayser, F., Müller, A.-S., Quast, G., Renk, B., Sander, H.-G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Männer, W., Moser, H.-G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J.-F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J.-J., Azzurri, P., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P.G., Awunor, O., Blair, G.A., Cowan, G., Garcia-Bellido, A., Green, M.G., Medcalf, T., Misiejuk, A., Strong, J.A., Teixeira-Dias, P., Clifft, R.W., Edgecock, T.R., Norton, P.R., Tomalin, I.R., Ward, J.J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M.-C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Litke, A.M., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Hodgson, P.N., Lehto, M., Thompson, L.F., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S.R., Berkelman, K., Cranmer, K., Ferguson, D.P.S., Gao, Y., González, S., Hayes, O.J., Hu, H., Jin, S., Kile, J., McNamara III, P.A., Nielsen, J., Pan, Y.B., von Wimmersperg-Toeller, J.H., Wiedenmann, W., Wu, J., Wu, Sau Lan, Wu, X., Zobernig, G., Dissertori, G., and The ALEPH Collaboration

Published
2007
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26. Search for Higgs bosons decaying to WW in e+e- collisions at LEP

Author

Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jézéquel, S., Lees, J.-P., Martin, F., Merle, E., Minard, M.-N., Pietrzyk, B., Trocmé, B., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., De Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmüller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R.W., Frank, M., Gianotti, F., Hansen, J.B., Harvey, J., Hutchcroft, D.E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J.M., Perret, P., Hansen, J.D., Hansen, J.R., Hansen, P.H., Kraan, A.C., Nilsson, B.S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J.-C., Machefert, F., Rougé, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G.P., Passalacqua, L., Kennedy, J., Lynch, J.G., Negus, P., O’Shea, V., Thompson, A.S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E.E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P.J., Girone, M., Marinelli, N., Nowell, J., Rutherford, S.A., Sedgbeer, J.K., Thompson, J.C., White, R., Ghete, V.M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C.K., Clarke, D.P., Ellis, G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Pearson, M.R., Robertson, N.A., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Lemaitre, V., Blumenschein, U., Hölldorfer, F., Jakobs, K., Kayser, F., Müller, A.-S., Renk, B., Sander, H.-G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Männer, W., Moser, H.-G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J.-F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J.-J., Azzurri, P., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P.G., Awunor, O., Blair, G.A., Cowan, G., Garcia-Bellido, A., Green, M.G., Medcalf, T., Misiejuk, A., Strong, J.A., Teixeira-Dias, P., Clifft, R.W., Edgecock, T.R., Norton, P.R., Tomalin, I.R., Ward, J.J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M.-C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Litke, A.M., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Hodgson, P.N., Lehto, M., Thompson, L.F., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S.R., Berkelman, K., Cranmer, K., Ferguson, D.P.S., Gao, Y., González, S., Hayes, O.J., Hu, H., Jin, S., Kile, J., McNamara III, P.A., Nielsen, J., Pan, Y.B., von Wimmersperg-Toeller, J.H., Wiedenmann, W., Wu, J., Lan Wu, Sau, Wu, X., Zobernig, G., Dissertori, G., and The ALEPH Collaboration

Published
2007
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27. Nucleon inelastic scattering cross sections on $^{16}$O and $^{28}$Si

Author

Boromiza, M., Borcea, C., Dessagne, P., Ghita, D., Glodariu, T., Henning, G., Kerveno, M., Marginean, N., Mihai, C., Mihai, R., Negret, A., Nita, C., Nyman, M., Olacel, A., Oprea, A., Plompen, A., Sotty, C., Suliman, G., Suvaila, R., Stan, L., Turturica, A., Turturica, G., IFIN-HH, Département Recherches Subatomiques (DRS-IPHC), 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), and European Commission - Joint Research Centre [Geel] (JRC)

Subjects
2740+z, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, numbers: 2540Fq, 2930Kv
Abstract

International audience; The main purpose was to measure the neutron-and proton-induced inelastic γ-production cross sections, for all observed transitions in 16 O and 28 Si, followed by the calculation of the corresponding total inelastic cross section. The results are compared with theoretical calculations performed using the talys 1.9 code, evaluated nuclear data and with previously reported experimental data. The broader goal of this work is to study if and to which extent the neutron-induced inelastic cross sections of these nuclei can be inferred from those obtained using suitable charged particle reactions. We show that, by making use of the formal similarities between the neutron-and the proton-target optical model potentials and isospin symmetry in mirror nuclei, one can develop a procedure that combines experimental proton-induced inelastic cross sections with theoretical calculations to infer neutron inelastic cross sections. For 16 O and 28 Si, the precision associated with this procedure is around 10-20% for most of the incident energy range.

Published
2020

28. Measurement of the W boson mass and width in e+e- collisions at LEP

Author

Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jézéquel, S., Lees, J.-P., Martin, F., Merle, E., Minard, M.-N., Pietrzyk, B., Trocmé, B., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmüller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R.W., Frank, M., Gianotti, F., Hansen, J.B., Harvey, J., Hutchcroft, D.E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J.M., Perret, P., Hansen, J.D., Hansen, J.R., Hansen, P.H., Kraan, A.C., Nilsson, B.S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J.-C., Machefert, F., Rougé, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G.P., Passalacqua, L., Kennedy, J., Lynch, J.G., Negus, P., O’Shea, V., Thompson, A.S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E.E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P.J., Girone, M., Marinelli, N., Nowell, J., Rutherford, S.A., Sedgbeer, J.K., Thompson, J.C., White, R., Ghete, V.M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C.K., Clarke, D.P., Ellis, G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Pearson, M.R., Robertson, N.A., Sloan, T., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Lemaitre, V., Blumenschein, U., Hölldorfer, F., Jakobs, K., Kayser, F., Müller, A.-S., Renk, B., Sander, H.-G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Männer, W., Moser, H.-G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J.-F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J.-J., Azzurri, P., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P.G., Awunor, O., Blair, G.A., Cowan, G., Garcia-Bellido, A., Green, M.G., Medcalf, T., Misiejuk, A., Strong, J.A., Teixeira-Dias, P., Clifft, R.W., Edgecock, T.R., Norton, P.R., Tomalin, I.R., Ward, J.J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M.-C., Locci, E., Perez, P., Rander, J., Trabelsi, A., Tuchming, B., Vallage, B., Litke, A.M., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Hodgson, P.N., Lehto, M., Thompson, L.F., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S.R., Berkelman, K., Cranmer, K., Ferguson, D.P.S., Gao, Y., González, S., Hayes, O.J., Hu, H., Jin, S., Kile, J., McNamara III, P.A., Nielsen, J., Pan, Y.B., von Wimmersperg-Toeller, J.H., Wiedenmann, W., Wu, J., Wu, Sau Lan, Wu, X., Zobernig, G., Dissertori, G., and The ALEPH Collaboration

Published
2006
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29. New structure information on 30Mg, 31Mg and 32Mg

Author

Mach, H., Fraile, L. M., Tengblad, O., Boutami, R., Jollet, C., Płóciennik, W. A., Yordanov, D. T., Stanoiu, M., Borge, M. J. G., Butler, P. A., Cederkäll, J., Dessagne, Ph., Fogelberg, B., Fynbo, H., Hoff, P., Jokinen, A., Korgul, A., Köster, U., Kurcewicz, W., Marechal, F., Motobayashi, T., Mrazek, J., Neyens, G., Nilsson, T., Pedersen, S., Poves, A., Rubio, B., Ruchowska, E., and the ISOLDE Collaboration

Published
2005
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31. Beta-decay studies using total absorption spectroscopy

Author

Algora, A., Batist, L., Borge, M. J. G., Cano-Ott, D., Collatz, R., Courtin, S., Dessagne, Ph, Fraile, L. M., Gadea, A., Gelletly, W., Hellström, M., Janas, Z., Jungclaus, A., Kirchner, R., Karny, M., Le Scornet, G., Miehé, Ch, Maréchal, F., Moroz, F., Nácher, E., Poirier, E., Roeckl, E., Rubio, B., Rykaczewski, K., Tain, J. L., Tengblad, O., Wittmann, V., GSI-TAS Collaboration, and LUCRECIA-TAgS Collaboration

Published
2003
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32. Mirror decay of 75Sr

Author

Huikari, J., Oinonen, M., Algora, A., Cederkäll, J., Courtin, S., Dessagne, P., Fraile, L., Franchoo, S., Fynbo, H., Huang, W.X., Jokinen, A., Knipper, A., Marechal, F., Miehé, C., Nacher, E., Peräjärvi, K., Poirier, E., Weissman, L., Äystö, J., and and the ISOLDE Collaboration

Published
2003
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33. Beta-decay of the N = Z nucleus 72Kr

Author

Piqueras, I., Borge, M.J.G., Dessagne, Ph., Giovinazzo, J., Huck, A., Jokinen, A., Knipper, A., Longour, C., Marguier, G., Ramdhane, M., Rauch, V., Tengblad, O., Walter, G., Miehé, Ch., and and the ISOLDE Collaboration

Published
2003
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35. Nucleon inelastic scattering cross sections on O16 and Si28

Author

Boromiza, M., primary, Borcea, C., additional, Dessagne, P., additional, Ghita, D., additional, Glodariu, T., additional, Henning, G., additional, Kerveno, M., additional, Marginean, N., additional, Mihai, C., additional, Mihai, R., additional, Negret, A., additional, Nita, C., additional, Nyman, M., additional, Olacel, A., additional, Oprea, A., additional, Plompen, A. J. M., additional, Sotty, C., additional, Suliman, G., additional, Suvaila, R., additional, Stan, L., additional, Turturica, A., additional, and Turturica, G., additional

Published
2020
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40. Normal and intruder configurations in 34Si populated in the β- decay of 34Mg and 34Al

Author

IDS Collaboration, Lică, R, Rotaru, F, Borge, MJG, Grévy, S, Negoiţă, F, Poves, A, Sorlin, O, Andreyev, AN, Borcea, R, Costache, C, De Witte, H, Fraile, LM, Greenlees, PT, Huyse, M, Ionescu, A, Kisyov, S, Konki, J, Lazarus, I, Madurga, M, Mărginean, N, Mărginean, R, Mihai, C, Mihai, RE, Negret, A, Nowacki, F, Page, RD, Pakarinen, J, Pucknell, V, Rahkila, P, Rapisarda, E, Şerban, A, Sotty, CO, Stan, L, Stănoiu, M, Tengblad, O, Turturică, A, Van Duppen, P, Warr, N, Dessagne, P, Stora, T, Borcea, C, Călinescu, S, Daugas, JM, Filipescu, D, Kuti, I, Franchoo, S, Gheorghe, I, Morfouace, P, Morel, P, Mrazek, J, Pietreanu, D, Sohler, D, Stefan, I, Şuvăilă, R, Toma, S, and Ur, CA

Abstract

ispartof: Physical Review C vol:100 issue:3 pages:034306-034306 status: published

Published
2019

43. Normal and intruder configurations in Si 34 populated in the β- Decay of Mg 34 and Al 34

Author

Lică, R., Rotaru, F., García Borge, María José, Grévy, S., Negoita, F., Poves, Alfredo, Sorlin, O., Andreyev, A. N., Borcea, R., Costache, C., De Witte, H., Fraile, Luis M., Greenlees, P.T., Huyse, M., Ionescu, A., Kisyov, S., Konki, J., Lazarus, I., Madurga, Miguel, Marginean, N., Marginean, R., Mihai, C., Mihai, R.E., Negret, A., Nowacki, F., Page, R. D., Pakarinen, J., Pucknell, V., Rahkila, P., Rapisarda, E., Serban, A., Sotty, C. O., Stan, L., Stanoiu, M., Tengblad, Olof, Turturica, A., Van Duppen, P., Warr, N., Dessagne, P., Stora, T., Borcea, C., Calinescu, S., Daugas, J.M., Filipescu, D., Kuti, I., Franchoo, S., Gheorghe, I., Morfouace, P., Morel, P., Science and Technology Facilities Council (UK), European Commission, Ministerio de Economía y Competitividad (España), National Research, Development and Innovation Office (Hungary), Federal Ministry of Education and Research (Germany), SCOAP, Research Foundation - Flanders, Executive Unit for Financing Higher Education, Research, Development and Innovation (Romania), and Belgian Science Policy Office

Abstract

11 pags., 10 figs., 5 tabs.-- Open Access funded by Creative Commons Atribution Licence 4.0, The structure of Si34 was studied through γ spectroscopy separately in the β- decays of Mg34 and Al34 at the ISOLDE facility of CERN. Different configurations in Si34 were populated independently from the two recently identified β-decaying states in Al34 having spin-parity assignments Jπ=4- dominated by the normal configuration π(d5/2)-1 - ν(f7/2) and Jπ=1+ by the intruder configuration π(d5/2)-1 - ν(d3/2)-1(f7/2)2. The paper reports on spectroscopic properties of Si34 such as an extended level scheme, spin and parity assignments based on log(ft) values and γ-ray branching ratios, absolute β feeding intensities, and neutron emission probabilities. A total of 11 newly identified levels and 26 transitions were added to the previously known level scheme of Si34. Large scale shell-model calculations using the SDPF-U-MIX interaction, able to treat higher order intruder configurations, are compared with the new results and conclusions are drawn concerning the predictive power of SDPF-U-MIX, the N=20 shell gap, the level of mixing between normal and intruder configurations for the 01+, 02+, and 21+ states, and the absence of triaxial deformation in Si34., This work was partially supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS-UEFISCDI project number PN-II-RU-TE- 2014-4-1455, by the Romanian IFA Grant CERN/ISOLDE, by Research Foundation Flanders (FWO-Belgium), by GOA/2015/010 (BOF KU Leuven), and by the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12). Support from the U.K. Science and Technology Facilities Council, the European Union Seventh Framework through ENSAR (Contract No. 262010), the MINECO (Spain) grants FPA2017-87568-P, FPA2015-64969-P, FPA2014-57196, FPA2015-65035-P, Programme “Centros de Excelencia Severo Ochoa” SEV-2016- 0597, the MEYS project SPIRAL2-CZ,EF16-013/0001679, the National Research, Development and Innovation Fund of Hungary via Project No. K128947, the European Regional Development Fund (Contract No. GINOP-2.3.3-15-2016- 00034), the German BMBF under contract 05P18PKCIA (ISOLDE), and “Verbundprojekt 05P2018” is also acknowledged. I.K. was supported by the National Research, Development and Innovation Office of Hungary (NKFIH), Contract No. PD 124717.

Published
2019

46. β-decay studies at the N=28 shell closure: indications for a weakening of the spin-orbit force far from stability ?

Author

Grévy, S., Angélique, J.C., Baumann, P., Borcea, C., Buta, A., Canchel, G., Catford, W.N., Courtin, S., Daugas, J.M., De Oliveira, F., Dessagne, P., Dlouhy, Z., Knipper, A., Kratz, K.L., Lecolley, F.R., Lecouey, J.L., Lehrsenneau, G., Lewitowicz, M., Liénard, E., Lukyanov, S., Maréchal, F., Miehé, C., Mrazek, J., Negoita, F., Orr, N.A., Pantelica, D., Penionzhkevich, Y., Péter, J., Pfeiffer, B., Pietri, S., Poirier, E., Sorlin, O., Stanoiu, M., Stefan, I., Stodel, C., and Timis, C.

Published
2004
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47. Study of neutron-rich argon isotopes in β-decay

Author

Mrázek, J, Grévy, S, Iulian, S, Buta, A, Negoita, F, Angélique, J.C, Baumann, P, Borcea, C, Canchel, G, Catford, W, Courtin, S, Daugas, J.M, Dlouhý, Z, Dessagne, P, Knipper, A, Lehrsenneau, G, Lecolley, F.R, Lecouey, J.L, Lewitowicz, M, Liénard, E, Lukyanov, S, Maréchal, F, Miehe, C, de Oliveira, F, Orr, N.A, Pantelica, D, Penionzhkevich, Y, Peter, J, Pietri, S, Poirier, E, Sorlin, O, Stanoiu, M, Stodel, O, Tarasov, O, and Timis, C

Published
2004
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48. Spectroscopy at the N=20 shell closure: the β-decay of 32Mg

Author

Gre´vy, S., Pietri, S., Achouri, L., Ange´lique, J.C., Baumann, P., Borcea, C., Buta, A., Catford, W., Courtin, S., Daugas, J.M., De Oliveira, F., Dessagne, P., Dlouhy, Z., Mueller, D. Guillemaud, Hadeler, R., Knipper, A., Lecolley, F.R., Lecouey, J.L., Lewitowicz, M., Lie´nard, E., Miehe, C., Mrazek, J., Negoita, F., Orr, N.A., Penionzhkevich, Y., Peter, J., Poirier, E., Stanoiu, M., Tarasov, O., Timis, C., and Walter, G.

Published
2004
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50. Test of colour reconnection models using three-jet events in hadronic Z decays

Author

Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jézéquel, S., Lees, J.-P., Martin, F., Merle, E., Minard, M.-N., Pietrzyk, B., Trocmé, B., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmüller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R.W., Frank, M., Gianotti, F., Hansen, J.B., Harvey, J., Hutchcroft, D.E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J.M., Perret, P., Hansen, J.D., Hansen, J.R., Hansen, P.H., Kraan, A.C., Nilsson, B.S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J.-C., Machefert, F., Rougé, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G.P., Passalacqua, L., Kennedy, J., Lynch, J.G., Negus, P., O’Shea, V., Thompson, A.S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E.E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P.J., Girone, M., Marinelli, N., Nowell, J., Rutherford, S.A., Sedgbeer, J.K., Thompson, J.C., White, R., Ghete, V.M., Girtler, P., Jussel, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C.K., Clarke, D.P., Ellis, G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Pearson, M.R., Robertson, N.A., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Lemaitre, V., Blumenschein, U., Hölldorfer, F., Jakobs, K., Kayser, F., Müller, A.-S., Renk, B., Sander, H.-G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Männer, W., Moser, H.-G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J.-F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J.-J., Azzurri, P., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P.G., Awunor, O., Blair, G.A., Cowan, G., Garcia-Bellido, A., Green, M.G., Medcalf, T., Misiejuk, A., Strong, J.A., Teixeira-Dias, P., Clifft, R.W., Edgecock, T.R., Norton, P.R., Tomalin, I.R., Ward, J.J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M.-C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Litke, A.M., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Hodgson, P.N., Lehto, M., Thompson, L.F., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S.R., Berkelman, K., Cranmer, K., Ferguson, D.P.S., Gao, Y., González, S., Hayes, O.J., Hu, H., Jin, S., Kile, J., McNamara III, P.A., Nielsen, J., Pan, Y.B., von Wimmersperg-Toeller, J.H., Wiedenmann, W., Wu, J., Wu, S.L., Wu, X., Zobernig, G., and Dissertori, G.

Published
2006
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