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arXiv 0801.2264nucl-ex
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锂-锂体系中的直接核反应:7 Li +7 Li(Elab = 2 - 16)MeV

Direct Nuclear Reactions in Lithium-Lithium Systems: 7Li+7Li at Elab = 2 - 16 MeV

P. Rosenthal, H. Freiesleben, B. Gehrmann, I. Gotzhein, K. W. Potthast, B. Kamys, Z. Rudy

摘要:

在实验室能量为2 - 16 MeV范围内,测量了~ 7 Li(~ 7 Li,t),(~ 7 Li,α)和(~ 7 Li,6 He)反应的角分布。精确的有限范围DWBA分析的目的是确定直接过程的贡献,并调查DWBA的适用性,这样几个核子系统。结果表明,DWBA方法可以成功地应用于7 Li +7 Li相互作用中直接转移过程的微分截面和总截面的计算。直接机制被发现在大多数这些反应中发挥主导作用,但其他的,强烈的能量依赖性过程也建立了显着的贡献。这表明,这些过程可能是由于孤立的共振叠加在背景的统计涨落所产生的干扰的复合核和直接转移的贡献。

英文摘要:

Angular distributions of 7Li(7Li,t), (7Li,alpha) and (7Li,6He) reactions were measured for laboratory energies from 2 - 16 MeV. Exact finite range DWBA analyses were performed with the aim to identify contributions of direct processes and to investigate the applicability of DWBA to such few nucleon systems. It turned out that DWBA can be successfully applied to estimate differential and total cross sections of direct transfer processes in 7Li+7Li interaction. The direct mechanism was found to play a dominant role in most of these reactions but significant contributions of other, strongly energy dependent processes were also established. It is suggested that these processes might be due to isolated resonances superimposed on the backround of statistical fluctuations arising from interference of compound nucleus and direct transfer contributions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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