Determination of the Gamow-Teller quenching factor from charge exchange reactions on 90Zr

被引：96
|
作者：
Yako, K [1 ]
Sakai, H
Greenfield, MB
Hatanaka, K
Hatano, M
Kamiya, J
Kato, H
Kitamura, Y
Maeda, Y
Morris, CL
Okamura, H
Rapaport, J
Saito, T
Sakemi, Y
Sekiguchi, K
Shimizu, Y
Suda, K
Tamii, A
Uchigashima, N
Wakasa, T
机构：
[1] Univ Tokyo, Dept Phys, Tokyo 1330033, Japan
[2] Univ Tokyo, Ctr Nucl Study, Tokyo 1330033, Japan
[3] Int Christian Univ, Tokyo 1818585, Japan
[4] Osaka Univ, Res Ctr Nucl Phys, Ibaraki, Osaka 5670047, Japan
[5] Japan Atom Energy Res Inst, Tokai, Ibaraki 3191195, Japan
[6] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[7] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 9808578, Japan
[8] Ohio Univ, Dept Phys, Athens, OH 45701 USA
[9] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[10] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan
来源：
PHYSICS LETTERS B | 2005年 / 615卷 / 3-4期
关键词：
charge exchange reaction; Gamow-Teller strength; Gamow-Teller sum rule;
D O I：
10.1016/j.physletb.2005.04.032
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Double differential cross sections between 0 degrees-12 degrees were measured for the Zr-90(n, p) reaction at 293 MeV over a wide excitation energy range of 0-70 MeV. A multipole decomposition technique was applied to the present data as well as the previously obtained 90Zr(p, n) data to extract the Gamow-Teller (GT) component from the continuum. The GT quenching factor Q was derived by using the obtained total GT strengths. The result is Q = 0.88 +/- 0.06, not including an overall normalization uncertainty in the GT unit cross section of 16%. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：193 / 199
页数：7
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