Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1996-01-15
Phys.Rev.C53:2296-2303,1996
Physics
Nuclear Physics
Nuclear Theory
15 pages,revtex, 9 figures (available upon request)
Scientific paper
10.1103/PhysRevC.53.2296
The mechanism of the Coulomb breakup reactions of the nuclei with neutron-halo structure is investigated in detail. A time-dependent Schr\"odinger 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 $^{11}$Be + $^{208}$Pb. The breakup mechanism is found to be different between the channels of $j^{\pi}=\frac{1}{2}^{-}$ and $\frac{3}{2}^{-}$, reflecting the underlying structure of $^{11}$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.
Kido T.
Suzuki Yasuhiro
Yabana Kazuhiro
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