A self-consistent method to analyze the effects of the positive Q-value neutron transfers on fusion

A self-consistent method to analyze the effects of the positive Q-value neutron transfers on fusion

Considering the present limitation of the need for external parameters to describe the nucleus–nucleus potential and the couplings in the coupled-channels calculations, this work introduces an improved method without adjustable parameter to overcome the limitation and then sort out the positive Q-va...

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Bibliographic Details
Main Authors: H.M. Jia, C.J. Lin, L. Yang, X.X. Xu, N.R. Ma, L.J. Sun, F. Yang, Z.D. Wu, H.Q. Zhang, Z.H. Liu, D.X. Wang
Format: Article
Language:English
Published: Elsevier 2016-04-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269316000770
Description
Summary:Considering the present limitation of the need for external parameters to describe the nucleus–nucleus potential and the couplings in the coupled-channels calculations, this work introduces an improved method without adjustable parameter to overcome the limitation and then sort out the positive Q-value neutron transfers (PQNT) effects based on the CCFULL calculations. The corresponding analysis for Ca+Ca, S,Ca+Sn, and S,Ca+Zr provides a reliable proof and a quantitative evaluation for the residual enhancement (RE) related to PQNT. In addition, the RE for S32,Ca40+Zr94 shows an unexpected larger enhancement than S32,Ca40+Zr96 despite the similar multi-neutron transfer Q-values. This method should rather strictly test the fusion models and be helpful for excavating the underlying physics. Keywords: Sub-barrier fusion, Coupled-channels effects, Positive Q-value neutron transfers, Residual enhancement
ISSN:0370-2693

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