Target characterization for the 130Ba(alpha,gamma)134Ce gamma-process experiment

TL;DR

This paper discusses the experimental measurement of nuclear reaction cross sections relevant to the astrophysical gamma-process, focusing on accurately determining target thickness using three different methods.

Contribution

It introduces a detailed methodology for target characterization in nuclear reaction experiments, enhancing the accuracy of cross section measurements for astrophysical applications.

Findings

Three methods for target thickness determination are compared.

Reliable target characterization improves cross section measurement accuracy.

Results support better experimental standards for astrophysical nuclear data.

Abstract

In order to extend the available experimental database for the astrophysical gamma-process, the cross section measurement of the 130Ba(alpha,gamma)134Ce and 130Ba(alpha,n)133Ce reactions is in progress. The measurements are carried out using thin layers of evaporated BaCO3 as target. Since the target thickness enters directly into the calculation of the cross sections, the reliability of its determination is of crucial importance. Three different methods have been used to determine the target thickness. Details of these experiments and the obtained results are presented.