Employing $p+^{58}$Ni elastic scattering for determination of $K$-shell ionization cross section of $^{58}$Ni$^{19+}$ in collisions with hydrogen gas target at 95 MeV/u

TL;DR

This paper introduces a novel experimental approach using $p+^{58}$Ni elastic scattering to accurately measure the $K$-shell ionization cross section of $^{58}$Ni$^{19+}$ ions colliding with hydrogen at 95 MeV/u, validated by theoretical predictions.

Contribution

The study develops a new calibration-based method for measuring inner-shell ionization cross sections in ion-atom collisions, providing precise experimental data and validation against theoretical models.

Findings

Measured $K$-shell ionization cross section: 1047(100) barns.

Good agreement with RICODE-M theoretical predictions.

Established a reliable calibration technique using proton elastic scattering.

Abstract

We present a new experimental method for measuring inner-shell ionization cross sections of low-charged ions colliding with hydrogen gas target in a storage ring. The method is based on a calibration by the well-known differential cross sections of proton elastic scattering on nuclei. $K$-shell ionization cross section of 1047(100) barn for the 95 MeV/u $^{58}$Ni$^{19+}$ ions colliding with hydrogen atoms was obtained in this work. Compared to the measured ionization cross section, a good agreement is achieved with the prediction by the Relativistic Ionization CODE Modified program (RICODE-M).