Discovery of New Isotope U241 and Systematic High-Precision Atomic Mass Measurements of Neutron-Rich Pa-Pu Nuclei Produced via Multinucleon Transfer Reactions

T. Niwase,Yutaka Watanabe, Y. Hirayama, M. Mukai, P. Schury, A. N. Andreyev, Toshikazu Hashimoto, S. Iimura, H. Ishiyama,Yuta Ito,Sohee Jeong, D. Kaji, S. Kimura, H. Miyatake, K. Morimoto, J. Y. Moon, M. Oyaizu, M. Rosenbusch, Atsuhiko Taniguchi, M. Wada

Physical Review Letters（2023）

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摘要

The new isotope ^{241}U was synthesized and systematic atomic mass measurements of nineteen neutron-rich Pa-Pu isotopes were performed in the multinucleon transfer reactions of the ^{238}U+^{198}Pt system at the KISS facility. The present experimental results demonstrate the crucial role of the multinucleon transfer reactions for accessing unexplored neutron-rich actinide isotopes toward the N=152 shell gap in this region of nuclides.

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multinucleon transfer reactions,new isotope,high-precision,neutron-rich

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