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arXiv 1302.4581nucl-th
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9 Be弹性散射中的分裂与转移耦合效应研究

Exploring the breakup and transfer coupling effects in 9Be elastic scattering

V. V. Parkar, V. Jha, S. K. Pandit, S. Santra, S. Kailas

摘要:

考虑了~ 9 Be的两种团簇结构(~ 5 He +~ 4 He和~ 8Be+~ n)的破裂,描述了~ 9 Be弹对~(28)Si、~(64)Zn和~(144)Sm靶的弹性散射数据。计算结果表明,在势垒能量以上,5 He +4 He团簇模型的破裂耦合效应是显著的,而8Be+n模型的破裂耦合效应在相对较低的能量下是主要的.在8Be+n模型中增加一个中子剥离通道,给出了所有考虑系统的弹性数据的整体良好描述。在8Be+n模型中由分裂产生的耦合与在5 He +4 He模型中得到的耦合效应具有不同的行为,前者在较低能量和较重的靶系统中更为突出。研究了由分裂和一个中子转移耦合产生的动态极化势(DPP)的行为。

英文摘要:

Two cluster structures of 9Be namely, 5He+4He and 8Be+n have been considered for its breakup to describe the available data on elastic scattering for 9Be projectile with 28Si, 64Zn and 144Sm targets. The results of these calculations suggest that the breakup coupling effects are significant for 5He+4He cluster model at above the barrier energies, while they are dominant at relatively lower energies for 8Be+n model. The addition of one neutron stripping channel in the 8Be+n model gives an overall good description of the elastic data for all the systems considered. The couplings generated by breakup in 8Be+n model have different behaviour than the coupling effects obtained within the 5He+4He model, the former being more prominent at lower energies and for the heavier target systems. The behaviour of extracted dynamic polarisation potentials (DPP) generated due to breakup and one neutron transfer couplings have been investigated.

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