Gamow-Teller strength in the continuum and quenching problem

H. Sakai, T. Wakasa, H. Okamura, H. Otsu, T. Uesaka, N. Sakamoto, Y. Satou, K. Hatanaka

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)


Differential cross sections at θlab = 0.0°- 12.3° and a complete set of polarization transfer observables at θlab = 0.0° are measured for the 90Zr(p, n) reaction at Tp = 295 MeV. A multipole decomposition analysis (MDA) technique is applied to the cross sections to deduce the Gamow-Teller (GT) strength B(GT). The obtained Sβ- = ∑ B(GT) value is 28.0 ± 1.6. The total spin transfer ∑ is obtained for the continuum by using polarization transfer measurements. The Sβ- - Sβ+ value is deduced to be 27.0 and this is 90% of Ikeda's sum rule value of 3(N - Z)=30. Thus the quenching of the GT strength is small and the quenching mechanism due to the ΔN- admixture seems to play a minor role.

ジャーナルNuclear Physics A
1 SUPPL. 1
出版ステータス出版済み - 7月 26 1999

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学


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