Dr
Sunghan Bae
(IRIS, IBS)
Abstract: The neutron-capture rate in the rapid neutron-capture process (r-process) is one of the major sources of uncertainty, leaving the physical conditions for the r-process not fully constrained [1]. It was suggested that the compound-nucleus neutron-capture rate of 130Sn has a large impact on final r-process elemental abundances [1, 2]. We performed a (d,p) surrogate-reaction measurement for 130Sn in inverse kinematics at the RIKEN RIBF, OEDO SHARAQ beamline. The heavy-ion residues from the reaction (A = 129-131) were identified with the SHARAQ spectrometer, and the γ‑emission probabilities along the excitation energy of the compound nucleus, 131Sn, near the one‑neutron separation energy were obtained from the number ratios between the different-mass heavy-ion residues as a function of excitation energy. The neutron-capture cross-section of 130Sn was constrained based on the γ-emission probabilities. The experimental details and preliminary results for the neutron-capture cross section of 130Sn will be presented.
References: [1] M.R. Mumpower et al. Prog. Part. Nucl. Phys. 86, 86-126 (2016)
[2] S. Michimasa et al. Nucl. Instrum. Methods Phys. Res. B 540, 194-198 (2023)
Dr
Sunghan Bae
(IRIS, IBS)
Aurora Tumino
(UKE & INFN-LNS)
Dr
Daisuke Suzuki
(Department of Physics, University of Tokyo)
DeukSoon AHN
(CENS, IBS)
Fumitaka ENDO
(RIKEN Nishina Center)
H. Suzuki
(RIKEN, Nishina Center)
H. Takeda
(RIKEN, Nishina Center)
H. Tanaka
(Kyushu Univ.)
Hooi Jin Ong
(RCNP, Osaka University)
Jiatai Li
(Center for Nuclear Study, the University of Tokyo)
Dr
Jongwon Hwang
(Center for Exotic Nuclear Studies, Institute for Basic Science)
Mr
Keita Kawata
(University of Tokyo(CNS))
Kodai Okawa
Koichi Yoshida
(RIKEN Nishina Center)
Kyungyuk Chae
(Department of Physics, Sungkyunkwan University)
Livio Lamia
(Università di Catania & INFN-LNS)
M. Egeta
(RIKEN Nishina Center)
M. Tanaka
(RIKEN Nishina Center)
Masahiro Yoshimoto
(RIKEN Nishina Center)
Dr
Masanori Dozono
(Kyoto University)
N. Fukuda
(RIKEN, Nishina Center)
Naohito IWASA
(Department of Physics, Tohoku University)
Nobuaki IMAI
(CNS, Univ. of Tokyo)
Nobuya Nishimura
(CNS,University of Tokyo)
R. Yokoyama
(CNS, The University of Tokyo)
R. Yoshida
(LNGS, INFN)
R.G. Pizzone
(Dipartimento di Fisica e Astronomia “E. Majorana”, Universita di Catania, Italy & INFN–LNS, Laboratori Nazionali del Sud, Catania, Italy)
Reiko Kojima
(University of Tokyo)
S. Cherubini
(Dipartimento di Fisica e Astronomia “E. Majorana”, Universita di Catania, Italy & INFN-Laboratori Nazionali del Sud)
S. Palmerini
(Dipartimento di Fisica e Geologia, Universita di Perugia, Perugia, Italy & INFN–Sezione di Perugia, Perugia, Italy)
Seiya Hayakawa
(Center for Nuclear Study (CNS), the University of Tokyo)
Shigeru Kubono
(RIKEN Nishina Center, RIKEN)
Shin'ichiro MICHIMASA
(RIKEN Nishina Center)
Dr
Shinsuke Ota
(RCNP, Osaka University)
Shojiro Ishio
(Department of Physics, Tohoku University)
Mr
Shutaro Hanai
(CNS, the University of Tokyo)
Susumu Shimoura
(CNS, University of Tokyo)
T. Sumikama
(Tohoku University)
T. Teranishi
(Kyushu Univ.)
Taiga Haginouchi
(Department of Physics, Tohoku University)
Takehiko Saito
(RIKEN, Saitama University and GSI Helmholtz Centre for Heavy Ion Research)
Thomas Chillery
(University of Naples)
Xiaodong Tang
(Institute of Modern Physics, CAS)
Y. Wang
(Tsinghua Univ.)
Dr
Yasuhiro Togano
(RIKEN Nishina Center)
Yohei Shimizu
(RIKEN Nishina Center)
Yuto Hijikata
(RIKEN)
Zhigang Xiaozg
(Department of Physics, Tsinghua University)
marco la cognata
(infn-lns)
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