Activation measurement of the 3He(a,g)7Be reaction cross section at high energies

TL;DR

This study measures the cross section of the 3He(a,g)7Be reaction at high energies using activation, clarifying previous experimental contradictions and supporting recent findings on energy dependence.

Contribution

It provides new high-energy cross section measurements using activation, resolving discrepancies in existing data and validating recent energy dependence observations.

Findings

Cross sections measured between 1.5 and 2.5 MeV.

Results support recent experimental energy dependence.

Data aligns with theoretical calculations.

Abstract

The astrophysically important 3He(a,g)7Be reaction was studied at high energies where the available experimental data are in contradiction. A thin window 3He gas cell was used and the cross section was measured with the activation method. The obtained cross sections at energies between Ec.m. = 1.5 and 2.5 MeV are compared with the available data and theoretical calculations. The present results support the validity of the high energy cross section energy dependence observed by recent experiments.