Isomer production ratio of the 112Cd(n, γ) 113Cd reaction in an s-process branching point

被引：1

作者：

Hayakawa, Takehito ^{[1
,2
]}

Toh, Yosuke ^{[3
]}

Kimura, Atsushi ^{[3
]}

Nakamura, Shoji ^{[3
]}

Shizuma, Toshiyuki ^{[1
]}

Iwamoto, Nobuyuki ^{[3
]}

Chiba, Satoshi ^{[4
]}

Kajino, Toshitaka ^{[5
,6
,7
]}

机构：

[1] Natl Inst Quantum & Radiol Sci & Technol, Tokai, Ibaraki 3191106, Japan

[2] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[3] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan

[4] Tokyo Inst Technol, Meguro Ku, 2-12-1 Ookayama, Tokyo 1130033, Japan

[5] Beihang Univ, Sch Phys, Int Ctr Big Bang Cosmol & Element Genesis, Beijing 100083, Peoples R China

[6] Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan

[7] Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW C | 2021年 / 103卷 / 04期

关键词：

NEUTRON-RESONANCE SPECTROSCOPY; CAPTURE CROSS-SECTIONS; SEPARATED ISOTOPES; RARE;

D O I：

10.1103/PhysRevC.103.045801

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A beta-decay unstable isomer with a half-life of 14.1 yr at 264 keV in Cd-113 is a branching point in the s process, from which a weak branch reaches to a rare tin isotope Sn-115 whose astrophysical origin has been an open problem. We have measured gamma rays decaying to the ground state or the isomer in the Cd-112(n, gamma) Cd-113 reaction using high-energy resolution detectors in conjunction with a time-of-flight method. The relative production ratios of the isomer to the total following the neutron capture reactions on Cd-112 have been evaluated in an energy region of up to 9 keV, and the spin and parity of several resonances have been assigned.

引用

页数：5

共 23 条

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