Breakdown of N = 8 magic number near the neutron drip line from parallel momentum distribution analyses

TL;DR

This paper investigates how the N=8 magic number breaks down near the neutron drip line by analyzing the parallel momentum distribution in Coulomb breakup of Be isotopes using theoretical models.

Contribution

It introduces a method to study the breakdown of the N=8 magic number using parallel momentum distribution analysis with two theoretical models.

Findings

Full width at half maxima correlates with magic number stability.

Breakdown of N=8 observed near the neutron drip line.

Theoretical models effectively predict momentum distribution features.

Abstract

Using two theoretical models (the post form finite range distorted wave Born approximation and the adiabatic model) we calculate the parallel momentum distribution of the charged core in the Coulomb breakup of Be isotopes on a heavy target at 100 MeV/u. We show that the full width at half maxima of the parallel momentum distribution can be used to study the breakdown of N = 8 magic number away from the valley of stability.