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Your search keyword '"R. Briselet"' showing total 2 results
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2 results on '"R. Briselet"'

1. Towards saturation of the electron-capture delayed fission probability: The new isotopes 240Es and 236Bk

Author

J. Konki, J. Khuyagbaatar, J. Uusitalo, P.T. Greenlees, K. Auranen, H. Badran, M. Block, R. Briselet, D.M. Cox, M. Dasgupta, A. Di Nitto, Ch.E. Düllmann, T. Grahn, K. Hauschild, A. Herzán, R.-D. Herzberg, F.P. Heßberger, D.J. Hinde, R. Julin, S. Juutinen, E. Jäger, B. Kindler, J. Krier, M. Leino, B. Lommel, A. Lopez-Martens, D.H. Luong, M. Mallaburn, K. Nishio, J. Pakarinen, P. Papadakis, J. Partanen, P. Peura, P. Rahkila, K. Rezynkina, P. Ruotsalainen, M. Sandzelius, J. Sarén, C. Scholey, J. Sorri, S. Stolze, B. Sulignano, Ch. Theisen, A. Ward, A. Yakushev, and V. Yakusheva

Subjects
Isotopes with mass 236–240, 240Es, 236Bk, α decay, Electron-capture delayed fission, Fusion–evaporation reactions, Physics, QC1-999
Abstract

The new neutron-deficient nuclei 240Es and 236Bk were synthesised at the gas-filled recoil separator RITU. They were identified by their radioactive decay chains starting from 240Es produced in the fusion–evaporation reaction 209Bi(34S,3n)240Es. Half-lives of 6(2)s and 22−6+13s were obtained for 240Es and 236Bk, respectively. Two groups of α particles with energies Eα=8.19(3)MeV and 8.09(3)MeV were unambiguously assigned to 240Es. Electron-capture delayed fission branches with probabilities of 0.16(6) and 0.04(2) were measured for 240Es and 236Bk, respectively. These new data show a continuation of the exponential increase of ECDF probabilities in more neutron-deficient isotopes.

Published
2017
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2. Study of Octupole Collectivity in 146Nd and 148Sm Using the New Coulomb Excitation Set-up at ALTO

Author

P. Matuszczak, Liam Gaffney, P. Reiter, L. Próchniak, H. De Witte, T. Konstantinopoulos, W. Korten, Alain Goasduff, K. Wrzosek-Lipska, D. Rosiak, M. Komorowska, R. Lutter, B. Siebeck, M. Thürauf, D. T. Doherty, M. Zielińska, Marcus Scheck, Herbert Hess, K. Hadynska-Klek, E. T. Gregor, M. Seidlitz, I. Matea, J. Ljungvall, Georgi P. Georgiev, W. Piątek, M. Klintefjord, Andreas Görgen, N. Warr, A. Gottardo, P. A. Butler, P. J. Napiorkowski, G. G. O'Neill, R. Briselet, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM SNO), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Univ. Paris-Sud, 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), 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, [PHYS]Physics [physics], NUCLEI, 010308 nuclear & particles physics, media_common.quotation_subject, Nuclear Theory, General Physics and Astronomy, Charge density, Coulomb excitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Asymmetry, Nuclear physics, Reflection (mathematics), Excited state, Neutron number, 0103 physical sciences, Atomic nucleus, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, media_common
Abstract

International audience; For certain combinations of protons and neutrons in atomic nuclei, a rise of a reflection asymmetry is expected. Experimental E3 strengths, which as a function of the neutron number peak at around N approximate to 8 8 and N approximate to 1 3 4, indicate enhanced octupole correlations as predicted by theory. Low-energy Coulomb excitation is a highly successful method for establishing the evolution of nuclear shapes, through the measurement of cross sections, to populate excited states that can be directly related to the static and dynamic moments of the charge distribution of the nucleus. A Coulomb excitation experiment at the ALTO facility, Orsay was performed recently to study collective properties of Nd-146 and Sm-148. In particular, the strengths of the < 3(-)parallel to E3 parallel to 0(+)> and < 1(-)parallel to E3 parallel to 4(+)> matrix elements will provide a clear distinction between octupole vibration and rigid deformation.

Published
2015
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