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

页码：193 / 199

页数：7

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