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arXiv 0902.0453nucl-th
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形变核的核-核反应截面

Nucleus-nucleus reaction cross-sections for deformed nuclei

M. Y. M. Hassan, M. Y. H. Farag, A. Y. Abul-Magd, T. E. I. Nassar

摘要:

用库仑修正的Glauber模型计算了形变靶核的反应截面。将靶的形变核物质密度展开为k = 0,2,4阶的多极子。在能量范围(10-1000 MeV/核子),研究了球形核与形变核之间的反应截面。在中能区,库仑场和介质内效应改变了入射光束的运动轨迹,是最显著的影响。在没有实验数据的情况下,在库仑场和介质内效应之外引入形变效应,提高了与实验数据和两种经验参数化的一致性。此外,还指出形变核中反应截面的增强与取向的固定有关。

英文摘要:

Reaction cross-sections are calculated using the Coulomb modified Glauber model for deformed target nuclei. The deformed nuclear matter density of the target is expanded into multipoles of order k = 0,2,4.The reaction cross-sections between some spherical and deformed nuclei are studied at energy range (10-1000 MeV/nucleon). The most significant effects in the intermediate energy range are the Coulomb field and in-medium effect that modified the trajectory of the incident beams. Introducing the deformation effect beside the Coulomb field and in-medium effect improves the agreement with the experimental data and two empirical parameterizations in the case of not finding experimental data. Moreover it is indicated that the enhancement of the reaction cross-sections is attributed with fixed orientation in deformed nuclei.

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