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arXiv 1007.1987nucl-th
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(d,p)反应中的短程效应

Finite-range effects in (d,p) reactions

N. B. Nguyen, F. M. Nunes, R. C. Johnson

摘要:

随着人们对利用(d,p)转移反应来提取结构和天体物理信息的兴趣越来越大,评价反应理论中常用近似的准确性就显得非常重要。从零程绝热波模型出发,考虑了传输过程中氘核的分裂,讨论了有限程n-p相互作用在计算氘核绝热波(如Johnson和Tandy)和计算传输振幅中的重要性.我们的研究涵盖了各种各样的目标,以及大范围的光束能量。而在低束能量有限范围的影响是小的(低于10%),我们发现这些影响变得重要,在中等能量(20兆电子伏/u)要求一个精确的治疗有限范围的分析(d,p)在碎裂设施测量的反应。

英文摘要:

With the increasing interest in using (d,p) transfer reactions to extract structure and astrophysical information, it is important to evaluate the accuracy of common approximations in reaction theory. Starting from the zero-range adiabatic wave model, which takes into account deuteron breakup in the transfer process, we evaluate the importance of the finite range of the n-p interaction in calculating the adiabatic deuteron wave (as in Johnson and Tandy) as well as in evaluating the transfer amplitude. Our study covers a wide variety of targets, as well as a large range of beam energies. Whereas at low beam energies finite-range effects are small (below 10%), we find these effects to become important at intermediate energies (20 MeV/u) calling for an exact treatment of finite range in the analysis of (d,p) reactions measured at fragmentation facilities.

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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