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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >CROSS SECTIONS AND REACTION RATES OF D+LI-8 REACTIONS INVOLVED IN BIG BANG NUCLEOSYNTHESIS
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CROSS SECTIONS AND REACTION RATES OF D+LI-8 REACTIONS INVOLVED IN BIG BANG NUCLEOSYNTHESIS

机译：大爆炸核合成中涉及的D + LI-8反应的截面和反应速率

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摘要

We have measured angular distributions of the H-2(Li-8, Li-7)H-3 and H-2(Li-8, Be-9)n reations at E(c.m.) = 1.5 to 2.8 MeV using an Li-8-radioactive-beam technique. Astrophysical S-factors and reaction rates were calculated from the measured cross sections. Although the H-2(8Li, Be-9)n cross section is small, it can contribute to Be-9 synthesis, The H-2(Li-8, Li-7)H-3 reaction has a sufficiently large cross section to destroy Li-8, which may decrease the synthesis of heavier elements. No products from the H-2(Li-8, Li-9)p reaction were detected. We also present the results of calculations using the inhomogeneous model of primordial nucleosynthesis in several regions of parameter space. [References: 27]
机译：我们使用锂离子在E（cm）= 1.5到2.8 MeV下测量了H-2（Li-8，Li-7）H-3和H-2（Li-8，Be-9）n反应的角分布-8放射性束技术。由测得的横截面计算天体物理S因子和反应速率。尽管H-2（8Li，Be-9）n的横截面较小，但可以促进Be-9的合成，但H-2（Li-8，Li-7）H-3反应的横截面足够大破坏Li-8，这可能会减少较重元素的合成。没有检测到H-2（Li-8，Li-9）p反应的产物。我们还介绍了在参数空间的多个区域中使用原始核合成的不均匀模型进行计算的结果。 [参考：27]

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