Coulomb breakup mechanism of neutron-halo nuclei in a time-dependent method
- Graduate School of Science and Technology, Niigata University, Niigata 950-21 (Japan)
The mechanism of the Coulomb breakup reactions of the nuclei with neutron-halo structure is investigated in detail. A time-dependent Schr{umlt o}dinger 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 {sup 11}Be+{sup 208}Pb. The breakup mechanism is found to be different between the channels of {ital j}{sup {pi}}=1/2{sup {minus}} and 3/2{sup {minus}}, reflecting the underlying structure of {sup 11}Be. 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. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 283966
- Journal Information:
- Physical Review, C, Vol. 53, Issue 5; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Coulomb breakup of one-neutron halo nuclei
Coulomb and nuclear breakup of a halo nucleus {sup 11}Be