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Quadrupole Contribution to Two Neutron Removal in Heavy Ion Collisions

C. J. Benesh
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Abstract

In this report, electric quadrupole corrections to the two neutron removal cross section measured in heavy ion collisions are estimated for $^{197}$Au and $^{59}$Co targets. The quadrupole process is assumed to proceed primarily through excitation of the giant isovector quadrupole resonance, which then decays by neutron emission. For $^{59}$Co, the contribution from E2 radiation is found to be small, while for $^{197}$Au we find the quadrupole contribution resolves the discrepancy between experiment and the simple predictions of the Weissacker-Williams virtual photon method.

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C. J. Benesh. 1992-10-04. Quadrupole Contribution to Two Neutron Removal in Heavy Ion Collisions. https://doi.org/10.1103/physrevc.46.2635

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