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18 results on '"Harca I"'

1. Deconstructing the emission order of protons, neutrons and $\alpha$-particles following fusion in $^{28,30,32}$Si + $^{28}$Si

Author

Kumar, Rohit, Desilets, H., Johnstone, J. E., Hudan, S., Chattopadhyay, D., deSouza, R. T., Ackermann, D., Basson, M., Brown, K. W., Chbihi, A., Cook, K. J., Famiano, M., Genard, T., Harca, I. M., and Paneru, S. N. more...

Subjects
Nuclear Experiment
Abstract

A high-quality measurement of proton and $\alpha$-particle emission associated with fusion of $^{28,30,32}$Si with a $^{28}$Si target is described. Evaporation residues produced by de-excitation of the compound nucleus were identified by an energy time-of-flight (ETOF) measurement while emitted light-charged particles were identified using the $\Delta$E-E technique. Comparison of the experimentally measured charged particle multiplicities and energy spectra with the predictions of the statistical decay model code, GEMINI++, allows one to deduce interesting details of the de-excitation cascade and its dependence on neutron-excess. The impact of modifying the sequence of particle emissions on the average energy and multiplicity is examined., Comment: 12 pages, 16 figures more...

Published
2025

2. Coulomb and nuclear excitations of $^{70}$Zn and $^{68}$Ni at intermediate energy

Author

Calinescu, S., Sorlin, O., Matea, I., Carstoiu, F., Dao, D., Nowacki, F., de Angelis, G., Astabatyan, R., Bagchi, S., Borcea, C., Borcea, R., Cáceres, L., Ciemála, M., Clément, E., Dombrádi, Z., Franchoo, S., Gottardo, A., Grévy, S., Guerin, H., Harakeh, M. N., Harca, I. M., Kamalou, O., Kmiecik, M., Krasznahorkay, A., Krzysiek, M., Kuti, I., Lepailleur, A., Lukyanov, S., Maj, A., Maslov, V., Mazurek, K., Morfouace, P., Mrazek, J., Negoita, F., Niikura, M., Olivier, L., Penionzhkevich, Y., Perrot, L., Petrone, C., Podolyák, Z., Rigollet, C, Roger, T., Rotaru, F., Sohler, D., Stanoiu, M., Stefan, I., Stuhl, L., Thomas, J. C., Vajta, Z., Vandebrouck, M., and Wieland, O. more...

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The reduced transition probabilities $B(E2; 0^+_{g.s.}\rightarrow2_1^+,2^+_2)$ in $^{70}$Zn and the full $B(E2; 0^+_{g.s.}\rightarrow2^+)$ strength up to S$_n$=7.79 MeV in $^{68}$Ni have been determined at the LISE/GANIL facility using the Coulomb-excitation technique at intermediate beam energy on a $^{208}$Pb target. The $\gamma$ rays emitted in-flight were detected with an array of 46 BaF$_2$ crystals. The angles of the deflected nuclei were determined in order to disentangle and extract the Coulomb and nuclear contributions to the excitation of the 2$^+$ states. The measured $B(E2; 0^+_{g.s.}\rightarrow2_1^+)$ of 1432(124) e$^2$fm$^4$ for $^{70}$Zn falls in the lower part of the published values which clustered either around 1600 or above 2000 e$^2$fm$^4$, while the $B(E2; 0^+_{g.s.}\rightarrow2^+_2)$ of 53(7) e$^2$fm$^4$ agrees very well with the two published values. The relatively low $B(E2; 0^+_{g.s.}\rightarrow2_1^+)$ of 301(38) e$^2$fm$^4$ for $^{68}$Ni agrees with previous studies and confirms a local magicity at $Z=28, N=40$. Combining the results of the low-energy spectra of $^{68}$Ni and $^{70}$Zn and their shell-model interpretations, it is interesting to notice that four different shapes (spherical, oblate, prolate and triaxial) are present. Finally, a summed $E2$ strength of only about 150 e$^2$fm$^4$ has been found experimentally at high excitation energy, likely due to proton excitations across the $Z=28$ gap. The experimental distribution of this high-energy $E2$ excitation agrees with SM calculations, but its strength is about two times weaker. more...

Published
2021

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3. Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction

Author

Mărginean, N., Little, D., Tsunoda, Y., Leoni, S., Janssens, R. V. F., Fornal, B., Otsuka, T., Michelagnoli, C., Stan, L., Crespi, F. C. L., Costache, C., Lica, R., Sferrazza, M., Turturica, A., Ayangeakaa, A. D., Auranen, K., Barani, M., Bender, P. C., Bottoni, S., Boromiza, M., Bracco, A., Călinescu, S., Campbell, C. M., Carpenter, M. P., Chowdhury, P., Ciemała, M., Cieplicka-Orynczak, N., Cline, D., Clisu, C., Crawford, H. L., Dinescu, I. E., Filipescu, D., Florea, N., Forney, A. M., Fracassetti, S., Gade, A., Gheorghe, I., Hayes, A. B., Harca, I., Henderson, J., Ionescu, A., Iskra, Ł. W., Jentschel, M., Kandzia, F., Kim, Y. H., Kondev, F. G., Korschinek, G., Köster, U., Krishichayan, Krzysiek, M., Lauritsen, T., Li, J., Mărginean, R., Maugeri, E. A., Mihai, C., Mihai, R. E., Mitu, A., Mutti, P., Negret, A., Niţă, C. R., Olăcel, A., Oprea, A., Pascu, S., Petrone, C., Porzio, C., Rhodes, D., Seweryniak, D., Schumann, D., Sotty, C., Stolze, S. M., Şuvăilă, R., Toma, S., Ujeniuc, S., Walters, W. B., Wu, C. Y., Wu, J., Zhu, S., and Ziliani, S. more...

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The low-spin structure of the semimagic 64Ni nucleus has been considerably expanded: combining four experiments, several 0+ and 2+ excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0+ excitation is located at a surprisingly high energy (3463 keV), with a collective 2+ state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N = 40 subshell gap highlights the impact of the monopole interaction and its variation in strength with N. more...

Published
2020
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4. Nucleon-induced inelastic cross sections on Ninat

Author

Olacel, A., Borcea, C., Boromiza, M., Calinescu, S., Clisu, C., Costache, C., Dessagne, Ph., Dinescu, I., Filipescu, D., Florea, N., Harca, I., Henning, G., Ionescu, A., Kerveno, M., Lica, R., Matei, A., Mihai, C., Mihai, R., Mitu, A., Negret, A., Nita, C., Nyman, M., Oprea, A., Petrone, C., Plompen, A. J. M., Sotty, C., Stan, L., Stoica, L., Suliman, G., Turturica, A., and Ujeniuc, S. more...

Published
2022
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6. Asymmetric and symmetric fission of excited nuclei of 180,190Hg and 184,192,202Pb formed in the reactions with 36Ar and 40,48Ca ions

Author

Bogachev, A. A., Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Itkis, M. G., Novikov, K. V., Kumar, D., Banerjee, T., Diatlov, I. N., Cheralu, M., Kirakosyan, V. V., Mukhamejanov, Y. S., Pan, A. N., Pchelintsev, I. V., Tikhomirov, R. S., Vorobiev, I. V., Maiti, M., Prajapat, R., Sarkar, G., Trzaska, W. H., Andreyev, A. N., Harca, I. M., and Vardaci, E. more...

Published
2021

7. Shape Coexistence at Zero Spin in Ni-64 Driven by the Monopole Tensor Interaction

Author

Marginean, N, Little, D, Tsunoda, Y, Leoni, S, Janssens, RVF, Fornal, B, Otsuka, T, Michelagnoli, C, Stan, L, Crespi, FCL, Costache, C, Lica, R, Sferrazza, M, Turturica, A, Ayangeakaa, AD, Auranen, K, Barani, M, Bender, PC, Bottoni, S, Boromiza, M, Bracco, A, Calinescu, S, Campbell, CM, Carpenter, MP, Chowdhury, P, Ciemala, M, Cieplicka-Orynczak, N, Cline, D, Clisu, C, Crawford, HL, Dinescu, IE, Dudouet, J, Filipescu, D, Florea, N, Forney, AM, Fracassetti, S, Gade, A, Gheorghe, I, Hayes, AB, Harca, I, Henderson, J, Ionescu, A, Iskra, LW, Jentschel, M, Kandzia, F, Kim, YH, Kondev, FG, Korschinek, G, Koster, U, Krishichayan, Krzysiek, M, Lauritsen, T, Li, J, Marginean, R, Maugeri, EA, Mihai, C, Mihai, RE, Mitu, A, Mutti, P, Negret, A, Nita, CR, Olacel, A, Oprea, A, Pascu, S, Petrone, C, Porzio, C, Rhodes, D, Seweryniak, D, Schumann, D, Sotty, C, Stolze, SM, Suvaila, R, Toma, S, Ujeniuc, S, Walters, WB, Wu, CY, Wu, J, Zhu, S, and Ziliani, S more...

Subjects
Science & Technology, STATES, Physics, Physical Sciences, Physics, Multidisciplinary, TRANSITION
Abstract

The low-spin structure of the semimagic ^{64}Ni nucleus has been considerably expanded: combining four experiments, several 0^{+} and 2^{+} excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0^{+} excitation is located at a surprisingly high energy (3463 keV), with a collective 2^{+} state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N=40 subshell gap highlights the impact of the monopole interaction and its variation in strength with N. ispartof: PHYSICAL REVIEW LETTERS vol:125 issue:10 ispartof: location:United States status: published more...

Published
2020

8. Investigation of fusion probabilities in the reactions with 52,54Cr, 64Ni, and 68Zn ions leading to the formation of Z = 120 superheavy composite systems

Author

Novikov, K. V., Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Itkis, M. G., Bogachev, A. A., Diatlov, I. N., Cheralu, M., Kumar, D., Kozulina, N. I., Pan, A. N., Pchelintsev, I. V., Vorobiev, I. V., Trzaska, W. H., Heinz, S., Devaraja, H. M., Lommel, B., Vardaci, E., Spinosa, S., Di Nitto, A., Pulcini, A., Khlebnikov, S. V., Singh, Pushpendra P., Sahoo, Rudra, N., Gall, B., Asfari, Z., Borcea, C., Harca, I., and Filipescu, D. M. more...

Subjects
fissio, fuusioreaktio, low and intermediate energy heavy-ion reactions, ydinfysiikka, nuclear fusion
Abstract

Background: The formation of superheavy nuclei in fusion reactions is suppressed by a competing quasifission process. The competition between the formation of the compound nucleus and the quasifission depends strongly on the reaction entrance channel. Purpose: The investigation of fission and quasifission processes in the formation of Z=120 superheavy composite systems in the 52,54Cr+248Cm and 68Zn+232Th reactions, and their comparison with the 64Ni+238U reaction at energies in the vicinity of the Coulomb barrier. Methods: Mass-energy distributions of fissionlike fragments formed in the reactions 52,54Cr+248Cm and 68Zn+232Th at energies near the Coulomb barrier were measured using the double-arm time-of-flight spectrometer CORSET. Results: Capture cross sections for the reactions under investigation were measured. The most probable fragment masses and total kinetic energies as well as their variances in dependence on the interaction energy were studied for asymmetric and symmetric fragments. The fusion probabilities were estimated from the analysis of mass-energy distributions. Conclusions: The estimated fusion probability drops down by a factor of 103 in the 54Cr+248Cm reaction compared to the reactions of 48Ca ions with actinides. Among the studied reactions, the 54Cr+248Cm is the most favorable one for the production of the superheavy element with Z=120. peerReviewed more...

Published
2020

9. Shape Coexistence at Zero Spin in Ni64 Driven by the Monopole Tensor Interaction

Author

Mărginean, N., Little, D., Tsunoda, Y., Leoni, S., Janssens, R. V. F., Fornal, B., Otsuka, T., Michelagnoli, C., Stan, L., Crespi, F. C. L., Costache, C., Lica, R., Sferrazza, M., Turturica, A., Ayangeakaa, A. D., Auranen, K., Barani, M., Bender, P. C., Bottoni, S., Boromiza, M., Bracco, A., Călinescu, S., Campbell, C. M., Carpenter, M. P., Chowdhury, P., Ciemała, M., Cieplicka-Oryǹczak, N., Cline, D., Clisu, C., Crawford, H. L., Dinescu, I. E., Dudouet, J., Filipescu, D., Florea, N., Forney, A. M., Fracassetti, S., Gade, A., Gheorghe, I., Hayes, A. B., Harca, I., Henderson, J., Ionescu, A., Iskra, Ł. W., Jentschel, M., Kandzia, F., Kim, Y. H., Kondev, F. G., Korschinek, G., Köster, U., Krishichayan, Krzysiek, M., Lauritsen, T., Li, J., Mărginean, R., Maugeri, E. A., Mihai, C., Mihai, R. E., Mitu, A., Mutti, P., Negret, A., Niţă, C. R., Olăcel, A., Oprea, A., Pascu, S., Petrone, C., Porzio, C., Rhodes, D., Seweryniak, D., Schumann, D., Sotty, C., Stolze, S. M., Şuvăilă, R., Toma, S., Ujeniuc, S., Walters, W. B., Wu, C. Y., Wu, J., Zhu, S., and Ziliani, S. more...

Subjects
ddc
Published
2019

10. Production of n-rich Nuclei along the Closed Shell N=126 in the collision 136Xe + 208Pb @Elab =870 MeV

Author

Quero, D, primary, Vardaci, E, additional, Kozulin, E M, additional, Zagrebaev, V A, additional, Corradi, L, additional, Pulcini, A, additional, La Rana, G, additional, Itkis, I M, additional, Knyazheva, G N, additional, Novikov, K, additional, Harca, I, additional, Fioretto, E, additional, Stefanini, A M, additional, Montanari, D, additional, Montagnoli, G, additional, Scarlassara, F, additional, Szilner, S, additional, Mijatović, T, additional, and Trzaska, W H, additional more...

Published
2018
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11. Gamma rays as probe of fission and quasi-fission dynamics in the reaction 32S + 197Au near the Coulomb barrier

Author

Pulcini, A, primary, Vardaci, E, additional, Kozulin, E, additional, Ashaduzzaman, M, additional, Borcea, C, additional, Bracco, A, additional, Brambilla, S, additional, Calinescu, S, additional, Camera, F, additional, Ciemala, M, additional, de Canditiis, B, additional, Dorvaux, O, additional, Harca, I M, additional, Itkis, I, additional, Kirakosyan, V V, additional, Knyazheva, G, additional, Kozulina, N, additional, Kolesov, I V, additional, La Rana, G, additional, Maj, A, additional, Matea, I, additional, Novikov, K, additional, Petrone, C, additional, Quero, D, additional, Rath, P, additional, Saveleva, E, additional, Schmitt, C, additional, Sposito, G, additional, Stezowski, O, additional, Trzaska, W H, additional, and Wilson, J, additional more...

Published
2018
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12. The role of Fission in the search of the Super Heavy Land: Fission modes in heavy and superheavy nuclei. Case study of 180Hg

Author

Vardaci E., Di Nitto A., Banerjee T., Pulcini A., Setaro P.A., Alifano G., La Rana G., Carjan N., Cicchella A., Spinosa S., Kozulin E.M., Trzaska W.H., Itkis I.M., Knyazheva G.N., Kumar D., Novikov K.V., Vorobiev I.V., Khlebnikov S.V., Cheralu M., Kozulina N.I., Pchelintsev I.V., Borcea C., Calinescu S., Filipescu D.M., Harca I.M., and Petrone C. more...

Subjects
Physics, QC1-999
Abstract

Many observations strongly support the hypothesis that nuclei may fission through several independent fission modes (multimodal fission) interpreted as different prescission shapes and fission paths in a multidimensional potential energy landscape where shell effects are dominant. Mass distributions of the fission fragments are sensitive to the potential energy landscape and appear to be single humped (symmetric) or double humped (asymmetric). In many cases a mixture of both modes is observed. We propose here our study on 180Hg. Binary fission fragments formed in the reaction 68Zn + 112Sn → 180Hg at different excitation energies around the Coulomb barrier were detected using the double-arm time-of-flight technique with the spectrometers CORSET. The experiment was performed at JYFL (Jyvaskyla, Finland). We will discuss an analysis of the mass distributions in terms of fission modes predicted by a five-dimensional fission model. We have found out that the mass distributions can be well reproduced by considering a symmetric fission mode and two asymmetric modes at (AL ≈ 80, AH ≈ 100) and (AL ≈ 70 and AH ≈ 110). more...

Published
2024
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13. Production and investigation of neutron-rich Osmium isotopes with and around N=126 using gas flow transport method

Author

Novikov, K, primary, Kozulin, E M, additional, Harca, I M, additional, Dmitriev, S, additional, Flueras, A, additional, Greenlees, P, additional, Hanappe, F, additional, Khlebnikov, S V, additional, Loktev, T, additional, Maurer, J, additional, Nitto, A Di, additional, Pakarinen, J, additional, Ruotsalainen, P, additional, Sandzelius, M, additional, Sorri, J, additional, Sin, M, additional, Trzaska, W H, additional, Vardaci, E, additional, and Zagrebaev, V I, additional more...

Published
2014
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15. Gamma rays as probe of fission and quasi-fission dynamics in the reaction 32S + 197Au near the Coulomb barrier

Author

A. Bracco, E. M. Kozulin, B. de Canditiis, Wladyslaw Henryk Trzaska, I. M. Itkis, C. Petrone, Emanuele Vardaci, V. V. Kirakosyan, P. K. Rath, I. M. Harca, I. Matea, G. Sposito, S. Calinescu, O. Stezowski, C. Schmitt, A. Pulcini, D. Quero, James R. Wilson, N. I. Kozulina, G. La Rana, E. Saveleva, G. N. Knyazheva, K. V. Novikov, S. Brambilla, F. Camera, I. V. Kolesov, M. Ciemala, M. Ashaduzzaman, O. Dorvaux, C. Borcea, A. Maj, Giuseppe Mandaglio, Antonio Trifirò, Marina Trimarchi, Pulcini, A., Vardaci, E., Kozulin, E., Ashaduzzaman, M., Borcea, C., Bracco, A., Brambilla, S., Calinescu, S., Camera, F., Ciemala, M., De Canditiis, Bartolomeo, Dorvaux, O., Harca, I. M., Itkis, I., Kirakosyan, V. V., Knyazheva, G., Kozulina, N., Kolesov, I. V., La Rana, G., Maj, A., Matea, I., Novikov, K., Petrone, C., Quero, D., Rath, P., Saveleva, E., Schmitt, C., Sposito, G., Stezowski, O., Trzaska, W. H., Wilson, J., 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), 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 de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), 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), 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), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Mandaglio, Giuseppe, Trifirò, Antonio, and Trimarchi, Marina more...

Subjects
Physics, History, Angular momentum, Spectrometer, 010308 nuclear & particles physics, Fission, Detector, gamma radiation, Gamma ray, Coulomb barrier, gammasäteily, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Coincidence, Computer Science Applications, Education, Nuclear physics, nuclear fission, fissio, nuclear physics, 0103 physical sciences, Multiplicity (chemistry), 010306 general physics, ydinfysiikka, Nuclear Experiment
Abstract

International audience; Compound nucleus fission and quasi-fission are both binary decay channels whose common properties make the experimental separation between them difficult. A way to achieve this separation could be to probe the angular momentum of the binary fragments. This can be done detecting gamma rays in coincidence with the two fragments. As a case study, the reaction 32S + 197Au near the Coulomb barrier has been performed at the Tandem ALTO facility at IPN ORSAY. ORGAM and PARIS, two different gamma detectors arrays, are coupled with the CORSET detector, a two-arm time-of-flight spectrometer. TOF-TOF data were analyzed to reconstruct the mass-energy distribution of the primary fragments coupled with gamma multiplicity and spectroscopic analysis. Preliminary results of will be shown. more...

Published
2018
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16. Production of n-rich Nuclei along the Closed Shell N=126 in the collision 136Xe + 208Pb @E lab =870 MeV

Author

I. M. Harca, A. Pulcini, G. N. Knyazheva, I. M. Itkis, F. Scarlassara, K. V. Novikov, G. Montagnoli, E. M. Kozulin, Tea Mijatović, A. M. Stefanini, E. Fioretto, L. Corradi, Wladyslaw Henryk Trzaska, Emanuele Vardaci, V. A. Zagrebaev, D. Montanari, D. Quero, Suzana Szilner, G. La Rana, Mandaglio, Giuseppe, Trifirò, Antonio, Trimarchi, Marina, Giuseppe Mandaglio, Antonio Trifirò, Marina Trimarchi, Quero, D., Vardaci, E., Kozulin, E. M., Zagrebaev, V. A., Corradi, L., Pulcini, A., La Rana, G., Itkis, I. M., Knyazheva, G. N., Novikov, K., Harca, I., Fioretto, E., Stefanini, A. M., Montanari, D., Montagnoli, G., Scarlassara, F., Szilner, S., Mijatovic, T., and Trzaska, W. H. more...

Subjects
Physics, Nuclear physics, History, nuclear physics, Nuclear Theory, Production (computer science), Collision, Nuclear Experiment, ydinfysiikka, Open shell, Computer Science Applications, Education
Abstract

Multi-nucleon transfer reactions are nowadays the only known mean to produce neutron-rich nuclei in the Terra Incognita. The closed-shell region N=126 is crucial for both studying shell-quenching in exotic nuclei and the r-process, being its last "waiting-point". The choice of suitable reactions is challenging and a favorable case is 136Xe+208Pb, near the Coulomb barrier, because their neutron shell-closures play a stabilizing role, favoring the proton-transfer from lead to xenon. TOF-TOF data were analyzed to reconstruct the mass-energy distribution of the primary fragments. Preliminary results of an experiment held at Laboratori Nazionali di Legnaro with PRISMA, aimed at A and Z identification of the products, will be shown. peerReviewed more...

Published
2018

17. The study of neutron-rich nuclei production in the region of the closed shell N=126 in the multi-nucleon transfer reaction 136Xe+208Pb

Author

E. Fioretto, J.M. Itkis, G. N. Knyazheva, D. Quero, Emanuele Vardaci, A. M. Stefanini, S. N. Dmitriev, J. J. Valiente-Dobón, E. M. Kozulin, Wladyslaw Henryk Trzaska, D. Montanari, E. Strano, J. Piot, I. M. Harca, Dieter Ackermann, G. G. Chubarian, G. Montagnoli, G. Pollarolo, L. Corradi, K. V. Novikov, T. Loktev, S. Szilner, F. Scarlassara, Tea Mijatović, 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), 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), Novikov, K., Harca, I. M., Kozulin, E. M., Dmitriev, S., Itkis, J., Knyazheva, G., Loktev, T., Corradi, L., Valiente Dobon, J., Fioretto, E., Montanari, D., Stefanini, A. M., Vardaci, Emanuele, Quero, Daniele, Montagnoli, G., Scarlassara, F., Strano, E., Pollarolo, G., Piot, J., Mijatović, T., Szilner, S., Ackermann, D., Chubarian, G., and Trzaska, W. H. more...

Subjects
History, nuclear astro-physics, Proton, Nuclear Theory, spektrometrit, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Education, Nuclear physics, Xenon, Nucleosynthesis, neutron-rich nuclei, 0103 physical sciences, Nuclear astrophysics, chemical elements, Neutron, 010306 general physics, Nuclear Experiment, Open shell, heavy neutron rich nuclei, PRISMA spectrometer, Physics, neutron shells, Spectrometer, 010308 nuclear & particles physics, beam lines, closed shells, Computer Science Applications, neutron beams, chemistry, time of flight, Atomic physics, Nucleon
Abstract

Expérience LNL/PRISMA; International audience; The unexplored area of heavy neutron rich nuclei is extremely important for nuclearastrophysics investigations and, in particular, for the understanding of the r-process ofastrophysical nucleogenesis. For the production of heavy neutron rich nuclei located along theneutron closed shell N=126 (probably the last "waiting point" in the r-process of nucleosynthesis)the low-energy multi-nucleon transfer reaction 136Xe+208Pb at Elab=870MeV was explored.Due to the stabilizing eect of the closed neutron shells in both nuclei, N=82 and N=126, andthe rather favorable proton transfer from lead to xenon, the light fragments formed in this processare well bound and the Q-value of the reaction is nearly zero.Measurements were performed with the PRISMA spectrometer in coincidence with an additionaltime-of-flight (ToF) arm on the +20 beam line of the PIAVE-ALPI accelerator in Legnaro, Italy.The PRISMA spectrometer allows identication of the A, Z and velocity of the projectile-likefragments (PLF), while the second arm gives access to the target-like fragments (TLF).Details on the experimental setup and preliminary results are reported. more...

Published
2016
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18. Production and investigation of neutron-rich Osmium isotopes with and around N=126 using gas flow transport method

Author

Mikael Sandzelius, S. V. Khlebnikov, M Sin, E. Vardaci, Francis Hanappe, E. M. Kozulin, Panu Ruotsalainen, Juha Sorri, Janne Pakarinen, Wladyslaw Henryk Trzaska, Paul Greenlees, J. Maurer, S. N. Dmitriev, Valery Zagrebaev, A Flueras, A. Di Nitto, I. M. Harca, K. V. Novikov, T. Loktev, Giorgio Giardina, Avazbek K Nasirov and Giuseppe Mandaglio, Novikov, K, Kozulin, E. M, Harca, I. M, Dmitriev, S, Flueras, A, Greenlees, P, Hanappe, F, Khlebnikov, S. V, Loktev, T, Maurer, J, Nitto, A. Di, Pakarinen, J, Ruotsalainen, P, Sandzelius, M, Sorri, J, Sin, M, Trzaska, W. H, Vardaci, Emanuele, Zagrebaev, V. I., and DI NITTO, Antonio more...

Subjects
History, Isotope, Chemistry, Physique, Radiochemistry, Nuclear Theory, chemistry.chemical_element, Coulomb barrier, gas flow transport method, Astronomie, Computer Science Applications, Education, Osmium isotopes, Osmium, Neutron, Nuclear Experiment, Volatility (chemistry)
Abstract

Neutron-rich isotopes of heavy nuclei are until now poorly studied. In this work we investigate neutron-rich osmium isotopes produced in multi-nucleon transfer reactions. The reaction 136Xe+208Pb at energy near Coulomb barrier is used for production of osmium isotopes. The CORSAR-V setup is used to record the characteristics of osmium isotopes. The separation of the reaction products is based on their respective volatility. Experimental results are presented and discussed. © Published under licence by IOP Publishing Ltd., SCOPUS: cp.j, info:eu-repo/semantics/published more...

Published
2014