Eikonal Reaction Theory for Neutron-Removal Reaction

TL;DR

This paper introduces an accurate method for calculating one-neutron removal reactions at intermediate energies, treating nuclear and Coulomb breakup processes consistently without divergence issues.

Contribution

The paper develops the Eikonal Reaction Theory that avoids adiabatic approximation divergence, providing precise calculations for neutron-removal reactions.

Findings

Successfully applied to $^{31}$Ne scattering data

Evaluated spectroscopic factors and asymptotic normalization coefficients

Method improves accuracy over previous approaches

Abstract

We present an accurate method of treating the one-neutron removal reaction at intermediate incident energies induced by both nuclear and Coulomb interactions. In the method, the nuclear and Coulomb breakup processes are consistently treated by the method of continuum discretized coupled channels without making the adiabatic approximation to the Coulomb interaction, so that the removal cross section calculated never diverges. This method is applied to recently measured one-neutron removal cross section for $^{31}$Ne+$^{12}$C scattering at 230 MeV/nucleon and $^{31}$Ne+$^{208}$Pb scattering at 234 MeV/nucleon. The spectroscopic factor and the asymptotic normalization coefficient of the last neutron in $^{31}$Ne are evaluated.