Measuring the Total Cross Sections for Reactions in Collisions of 6, 8He + 28Si and 9Li + 28Si

Abstract

The total cross sections for the ^{6, 8}He + ²⁸Si and ⁹Li + ²⁸Si reactions are measured in the beam energy range of 12–39 A MeV via transmission method with registration of prompt neutron and gamma radiation by a spectrometer with six scintillation detectors. The technique taking into account the experimental values ​​of the efficiency of registering gamma radiation with different multiplicities and the number of triggered spectrometer detectors is used to analyze the experimental data. The experimental data are compared to data obtained earlier in other studies. The values ​​of the total cross section for ⁸He + ²⁸Si reaction at energy around 20 A MeV are close to those ​​of the total cross section for the ⁶He + ²⁸Si reaction. The total cross section for the ⁸He + ²⁸Si reaction is appreciably higher than the total cross section for the ⁶He + ²⁸Si reaction in the range of 12–16 A MeV.