From Coulomb excitation cross sections to non-resonant astrophysical rates in three-body systems: $^{17}$Ne case

TL;DR

This paper models the Coulomb and nuclear dissociation of $^{17}$Ne to determine the E1 strength function across energies relevant for astrophysics, analyzing how ground state structure influences dissociation and capture processes.

Contribution

It introduces a three-body model to analyze the dependence of the E1 strength function on $^{17}$Ne's structure and provides constraints on its configuration mixing and p-wave interactions based on experimental data.

Findings

The E1 strength function is characterized over a broad energy range.

Dependence of the strength function on ground state parameters is significant.

Experimental data constrains the $[s^2]/[d^2]$ configuration mixing and p-wave interactions.

Abstract

Coulomb and nuclear dissociation of $^{17}$Ne on light and heavy targets are studied theoretically. The dipole E1 strength function is determined in a broad energy range including energies of astrophysical interest. Dependence of the strength function on different parameters of the $^{17}$Ne ground state structure and continuum dynamics is analyzed in a three-body model. The discovered dependence plays an important role for studies of the strength functions for the three-body E1 dissociation and radiative capture. The constraints on the $[s^2]/[d^2]$ configuration mixing in $^{17}$Ne and on $p$-wave interaction in the $^{15}$O+$p$ channel are imposed based on experimental data for $^{17}$Ne Coulomb dissociation on heavy target.