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Effects of the in-medium NN interaction on total reaction and neutron removal cross sections

Warner, RE, Thompson, IJ and Tostevin, JA (2002) Effects of the in-medium NN interaction on total reaction and neutron removal cross sections PHYSICAL REVIEW C, 65 (4). ? - ?. ISSN 0556-2813

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Abstract

We discuss calculations of total reaction cross sections between complex nuclei, �R , using optical limit and few-body Glauber models in which the free nucleon-nucleon cross sections �NN are replaced by their �reduced� values in the nuclear medium. This replacement lowers �R by at most a few percent when �NN is determined from the local matter density in each overlapping volume element of the significant projectile-target trajectories. This relatively small effect contrasts with reductions of about 10% in �R reported by Xiangzhou et al., who assume a global value for the matter density throughout the interaction region. For two-neutron halo nuclei, we investigate the significance of these in-medium effects for the neutron-removal cross sections, ��2n . We show that use of an in-medium �NN raises ��2n for 6He but lowers it for 11Li, because of their different halo sizes.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Nuclear, Physics, HALO NUCLEI, MICROSCOPIC CALCULATION, ION COLLISIONS, LIGHT-NUCLEI, RADII, MODEL, LI-11, MATTER, STATES
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Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Symplectic Elements
Date Deposited: 16 Nov 2011 10:34
Last Modified: 23 Sep 2013 18:47
URI: http://epubs.surrey.ac.uk/id/eprint/7438

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