Coulomb breakup mechanism of neutron-halo nuclei in a time-dependent method

1 May 1996

journal article
Published by American Physical Society (APS) in Physical Review C

Vol. 53 (5) , 2296-2303
https://doi.org/10.1103/physrevc.53.2296

Abstract

The mechanism of the Coulomb breakup reactions of the nuclei with neutron-halo structure is investigated in detail. A time-dependent Schrödinger equation for the halo neutron is numerically solved by treating the Coulomb field of a target as an external field. The momentum distribution and the post-acceleration effect of the final fragments are discussed in a fully quantum mechanical way to clarify the limitation of the intuitive picture based on the classical mechanics. The theory is applied to the Coulomb breakup reaction of Be11+208Pb. The breakup mechanism is found to be different between the channels of jπ=1/2− and 3/2−, reflecting the underlying structure of Be11. The calculated result reproduces the energy spectrum of the breakup fragments reasonably well, but explains only about a half of the observed longitudinal momentum difference. © 1996 The American Physical Society.

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