Interaction- and charge-changing cross sections for neutron-rich 63−80Cu isotopes toward the derivation of neutron skin thickness
Takayama G. Fukuda M. Tanaka M. Fukutome M. Takechi M. Suzuki T. Homma A. Nishimura D. Moriguchi T. Ahn D.S. Aimaganbetov A. Amano M. Amitani M. Arakawa H. Baba H. Bagchi S. Behr K.-H. Burtebayev N. Chikaato K. Du H. Fujii T. Fukuda N. Fukushima C. Geissel H. Hori T. Hoshino S. Igosawa R. Ikeda A. Inabe N. Inomata K. Ishitani S. Itahashi K. Izumikawa T. Kamioka D. Kanda N. Kato I. Kenzhina I. Korkulu Z. Kuk Y. Kusaka K. Matsuta K. Mihara M. Miyata E. Nagae D. Nakamura S. Nassurlla M. Nishimuro K. Nishizuka K. Noguchi N. Ohtake M. Ohtsubo T. Omika S. Ong H.J. Onishi K. Ozawa A. Prochazka A. Sakhiyev S.K. Sakurai H. Scheidenberger C. Shimizu Y. Sumikama T. Suzuki S. Suzuki H. Taguchi R. Takeda H. Tanaka Y. Tanaka Y. Tanihata I. Togano Y. Wada T. Wakayama K. Yagi S. Yamaguchi T. Yanagihara R. Yanagisawa Y. Yano A. Yasuda K. Yoshida K. Zholdybayev T.K.
January 2026Elsevier B.V.
Nuclear Physics A
2026#1065
We have measured the interaction cross sections (σI) and charge-changing cross sections (σcc) for neutron-rich copper isotopes with mass numbers A=63−80 using the transmission method at the RIBF facility, RIKEN. From these values, we aim to derive the proton distribution radius (Rp) and the neutron distribution radius (Rn) for each isotope through subsequent analysis. Then, we plan to determine the neutron skin thickness (ΔRnp=Rn−Rp) for each isotope. These results will provide a new constraint on the symmetry energy parameter L of the equation of state (EoS) of nuclear matter and contribute to a deeper understanding of the nuclear structure of exotic nuclei.
Charge-changing cross section , EoS , Interaction cross section , Neutron skin thickness , Neutron-rich copper isotopes , Nuclear equation of state
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Department of Physics, The University of Osaka, 1-1 Machikaneyama, Osaka, Toyonaka, 560-0043, Japan
Faculty of Arts and Science, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
of Science and Technology, Niigata University, 8050 Ikarashi Nishi-ku, Niigata, 950-2181, Japan
Department of Physics, Saitama University, 255 Shimo-Okubo Sakura-ku, Saitama, 338-8570, Japan
Faculty of Science and Engineering, Tokyo City University, 1-28-1 Tamazutsumi Setagaya-ku, Tokyo, 158-8557, Japan
Institute of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Saitama, Wako, 351-0198, Japan
L. N. Gumilyov Eurasian National University, Satpayev St., 2, Nur-Sultan, 010000, Kazakhstan
Department of Physics, Indian Institute of Technology, Jharkhand, Dhanbad, 826004, India
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany
Institute for Research Promotion, Niigata University, Niigata, 950-8510, Japan
Institute for Basic Science, Yuseong District, 55 Expo-ro, Daejeon, South Korea
Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Rd, Lanzhou Lanzhou Gansu, Chengguan, China
Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Osaka, Ibaraki, 567-0047, Japan
Department of Physics
Faculty of Arts and Science
of Science and Technology
Department of Physics
Faculty of Science and Engineering
Institute of Pure and Applied Sciences
RIKEN Nishina Center for Accelerator-Based Science
L. N. Gumilyov Eurasian National University
Department of Physics
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Institute for Research Promotion
Institute for Basic Science
Institute of Modern Physics
Research Center for Nuclear Physics (RCNP)
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