The γSF Method - Determination of Radiative Neutron Capture Cross Sections for Unstable Nuclei

被引：2

作者：

Utsunomiya, H. ^{[1
]}

Goriely, S. ^{[2
]}

Akimune, H. ^{[1
]}

Harada, H. ^{[3
]}

Kitatani, F. ^{[3
]}

Goko, S. ^{[3
]}

Toyokawa, H. ^{[4
]}

Yamada, K. ^{[4
]}

Lui, Y. -W. ^{[5
]}

机构：

[1] Konan Univ, Dept Phys, Kobe, Hyogo 6588501, Japan

[2] Univ Libre Bruxelles, Inst Astron & Astrophys, B-1050 Brussels, Belgium

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

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[5] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 59卷 / 02期

关键词：

gamma SF method; Photoneutron cross sections; Radiative neutron-capture cross sections; Laser-compton scattering gamma rays; DIPOLE RESONANCE; TIN ISOTOPES; STRENGTH; SN-124;

D O I：

10.3938/jkps.59.1713

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An indirect method of determining radiative neutron-capture cross sections for unstable nuclei which we refer to as the gamma-ray strength function (gamma SF) method is outlined and applied to Zr and Sn isotopes. Photoneutron cross sections for Zr-91,Zr-92,Zr-94,Zr-96 and Sn-117,Sn-116 near neutron threshold show the presence of extra gamma-ray strengths known as giant M1 and pygmy E1 resonances on top of the low-energy gamma SF of GDR. Based on the gamma SF method, we present (n,gamma) cross sections for two radioactive nuclei, a long-lived fission product, Zr-93 with T-1/2= 1.5 x 10(6) y and an s-process branching point nucleus, Zr-95 with T-1/2 = 64.0 d.

引用

页码：1713 / 1716

页数：4

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