A non-perturbative approach to halo breakup

Details A non-perturbative approach to halo breakup A non-perturbative approach to halo breakup

2003-03-10

arxiv.org/abs/nucl-th/0303022v1

Nucl.Phys. A720 (2003) 337-353; Erratum-ibid. A741 (2004) 358-380

Physics

Nuclear Physics

Nuclear Theory

22 Latex pages, 1 table, 8 eps figures. Accepted for publication on Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(03)01092-3

The theory of weakly bound cluster breakup, like halo nucleus breakup, needs an accurate treatment of the transitions from bound to continuum states induced by the nuclear and Coulomb potentials. When the transition probability is not very small, a non-perturbative framework might be necessary. Nuclear excitation dominates at small impact parameters whereas the Coulomb potential being long range acts over a larger impact parameter interval. In this article, we propose an effective breakup amplitude which meets a number of requirements necessary for an accurate quantitative description of the breakup reaction mechanism. Furthermore our treatment gives some insight on the interplay between time dependent perturbation theory and sudden approximation and it allows to include the nuclear and Coulomb potentials to all orders within an eikonal-like framework.

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