3He+4He→7Be astrophysical S factor

被引：108

作者：

Brown, T. A. D. ^{[1
]}

Bordeanu, C. ^{[1
]}

Snover, K. A. ^{[1
]}

Storm, D. W. ^{[1
]}

Melconian, D. ^{[1
]}

Sallaska, A. L. ^{[1
]}

Sjue, S. K. L. ^{[1
]}

Triambak, S. ^{[1
]}

机构：

[1] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW C | 2007年 / 76卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.76.055801

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present precision measurements of the He-3+He-4 -> Be-7 reaction in the range E-c.m.=0.33 to 1.23 MeV using a small gas cell and detection of both prompt gamma rays and Be-7 activity. Our prompt and activity measurements are in good agreement within the experimental uncertainty of several percent. We find S(0)=0.595 +/- 0.018 keV b from fits of the Kajino theory to our data. We compare our results with published measurements, and we discuss the consequences for Big Bang Nucleosynthesis and for solar neutrino flux calculations.

引用

页数：12

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