ASTROPHYSICAL S-FACTOR OF C-12(ALPHA,GAMMA)O-16 FROM THE BETA-DELAYED ALPHA-PARTICLE EMISSION OF N-16

被引：68

作者：

ZHAO, Z

FRANCE, RH

LAI, KS

RUGARI, SL

GAI, M

WILDS, EL

机构：

[1] YALE UNIV,DEPT PHYS,AW WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06511

[2] UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06268

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.70.2066

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spectrum of low energy beta-delayed alpha-particle emission of N-16 was measured with high sensitivity; e.g., at E(alpha)L almost-equal-to 1 MeV, a sensitivity for a beta-decay branching ratio in the range of 10(-9) (to 10(-10)) was achieved. We used previous theoretical work of Ji, Filippone, Humblet, and Koonin to extract from these data the astrophysical p-wave S factor for the C-12(alpha,gamma)O-16 capture reaction, and find S(E1)(300) = 95 +/- 16(stat) +/- 28(syst) keV b. This result is crucial, for example, for understanding the last stages of a massive star before a supernova.

引用

页码：2066 / 2069

页数：4

共 19 条

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