Investigation of 11B+197Au Reaction at Intermediate Energies

TL;DR

This study investigates the nuclear reaction mechanisms of 11B ions on 197Au at intermediate energies, measuring reaction fragment cross sections and analyzing fission processes to understand the influence of projectile energy and linear momentum transfer.

Contribution

It provides new experimental data on reaction fragment cross sections and fission distributions for 11B + 197Au at specific energies, and analyzes the fission process using multimodal approaches.

Findings

Fission at 137.5 MeV shows multimodal distribution.

Fission at 255.5 MeV exhibits symmetric distribution.

Transferred linear momentum relates to initial projectile-target information.

Abstract

Mechanism of nuclear reactions on 197Au induced by 11B ions at energies above Coulomb barrier was studied by induced-activity method and gamma-spectroscopy. The cross sections of the reaction fragments from 197Au induced by 11B ions were measured at bombarding energies 137.5 and 255.5 MeV. The fission process was investigated by using multimodal fission approach at the energy 137.5 MeV, and pure symmetric distribution at 255.5 MeV. It was observed that the transferred linear momentum provides the information on the initial projectile-target information. The fissility for both fission reactions under study was deduced from measured fission cross section using the total inelastic cross section. Comparison with proton-induced fission shown, that the linear momentum transferred to the fissile system depends on the probe.