Evolution of high-spin states in neutron-rich Au 195 – 202 isotopes approaching the N = 126 shell closure
Year: 2026
Type: article
Abstract: \textbf{Background: } The nuclear structure in the region southwest of the doubly magic $^{208}$Pb is important to benchmark theoretical models relevant for neutron-rich heavy element formation and for the origin of the $A\approx195$ peak in the mass abundance distribution. Although neutron-rich Pb, Tl, and Hg ($Z=80-82$) isotopes are relatively well studied, experimental data for neutron-rich Au isotopes ($Z=79$) remain largely limited due to experimental challenges. \textbf{Purpose: } The purpose of this work is to investigate the evolution of the high-spin structure in neutron-rich Au isotopes near the $N=126$ shell closure and to characterize the underlying shell-model configurations, with a particular focus on the roles of the high-$j$ unique-parity $πh_{11/2}$ and $νi_{13/2}$ orbitals. \textbf{Methods: } Neutron-rich $^{195-202}$Au isotopes were produced using multi-nucleon transfer reactions of $^{198}$Pt($^{136}$Xe, $^{x}$I)$^{y}$Au at a beam energy of 7 MeV/u. %between a 7 MeV/u $^{136}$Xe beam and a $^{198}$Pt target at GANIL. Prompt and delayed $γ$-ray spectroscopy of isotopically identified reaction products was performed with a unique experimental setup combining the VAMOS++ large acceptance magnetic spectrometer, the AGATA HPGe $γ$-ray tracking array, and the CATLIFE detection system.
Source: Physical Review C
DOI: 10.1103/nclr-tjv1
Authors: Y. Cho, Y. H. Kim, A. Navin, M. Rejmund, A. Lemasson, D. Ramos, E. Clément, C. Yuan, M. Liu, P. van Isacker, A. N. Andreyev, J. Dudouet, S. Choi, Y. Son, A. Mukherjee, D. Ackermann, G. de Angelis, S. Bae, R. Banik, S. Bhattacharya, S. Bhattacharyya, K. Chae, F. Didierjean, C. Fougéres, G. de France, G. Fremont, J. Goupil, G. M. Gu, J. Ha, K. I. Hahn, Y. Hirayama, S. Jeong, D. T. Kattikat Melcom, C. H. Kim, M. J. Kim, S. H. Kim, W. Korten, P. Marini, H. Miyatake, M. Mukai, G. Mukherjee, T. Niwase, T. Otsuka, J. Park, R. M. Pérez-Vidal, F. Recchia, K. Rezynkina, P. Schury, J. C. Thomas, I. Tsekhanovich, A. Utepov, Y. X. Watanabe
Institutions: Seoul National University, Institute for Basic Science, Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Institut National de Physique Nucléaire et de Physique des Particules, Grand Accélérateur National d'Ions Lourds, Sun Yat-sen University, University of York, Lyon 1 Université, Institut de Physique des 2 Infinis de Lyon, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Variable Energy Cyclotron Centre, Sungkyunkwan University, Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg, University of Padua, High Energy Accelerator Research Organization, Université de Bordeaux, Laboratoire de Physique des deux infinis Bordeaux, Direction de la Recherche Fondamentale, Institut de Recherche sur les Lois Fondamentales de l'Univers, RIKEN Nishina Center, The University of Tokyo, Hope College, Consejo Superior de Investigaciones Científicas, Universitat de València, Instituto de Física Corpuscular, Istituto Nazionale di Fisica Nucleare, Sezione di Padova
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1047231290, G1221538787, G1272776275, G1422035950, G1458792852, G1799927510, G227586730, G2375547747, G2467737983, G2964013590, G318412399, G3220251042, G3452655474, G3534744629, G3565621276, G3837974848, G3857581125, G4100232737, G4286615259, G4547971943, G4639971666, G4993905653, G5180915604, G5767566948, G5958797875, G6109069350, G6113491088, G631184005, G6520718613, G6986277050, G7599454640, G792975244, G8159266686, G8789427271
OpenAlex ID: W7171736043