7Be(p,gamma)8B astrophysical S factor from precision cross section measurements.

7Be(p,gamma)8B astrophysical S factor from precision cross section measurements.
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来自精密横截面测量的 7Be(p,gamma)8B 天体物理 S 因子。

DOI:
10.1103/physrevlett.88.041101
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发表时间:
2001
影响因子:
8.6
通讯作者:
A. Zyuzin
A. Zyuzin
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
A. Junghans;E. Mohrmann;Kurt Snover;T. D. Steiger;E. Adelberger;J. Casandjian;H. Swanson;L. Buchmann;S. Park;A. Zyuzin

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我们测量了7 Be(p,gamma)~ 8B的截面,E(c.m.)= 186至1200 keV,每个点的纵向加系统精度优于+/-5%。测量了所有重要的系统误差,包括8B后向散射损失。我们从E(c.m.)的数据得到S_(17)(0)= 22.3+/-0.7(expt)+/-0.5(theor)eV B。<或=300 keV和Descouvemont和Baye理论。
We measured the 7Be(p,gamma)8B cross section from E(c.m.) = 186 to 1200 keV, with a statistical-plus-systematic precision per point of better than +/-5%. All important systematic errors were measured including 8B backscattering losses. We obtain S17(0) = 22.3+/-0.7(expt)+/-0.5(theor) eV b from our data at E(c.m.)< or =300 keV and the theory of Descouvemont and Baye.