Mechanisms for composite particle production in nuclear reactions using (α, α′x) reactions up to 40 MeV/nucleon

Abstract

Spectra of $\ensuremath{\alpha}$ particles from 90, 120, and 160 MeV $\ensuremath{\alpha}$-induced reactions on $^{54}\mathrm{Fe}$ have been measured and, together with data taken at 59 MeV, were analyzed in terms of the exciton coalescence model. Multiple-particle emission was found to be important in reproducing the shapes of the angle integrated spectra. Deduced radii ${P}_{0}$ of coalescence spheres in momentum space are consistent with the assumption that ${P}_{0}$ is constant.NUCLEAR REACTIONS $^{54}\mathrm{Fe}(\ensuremath{\alpha}, {\ensuremath{\alpha}}^{\ensuremath{'}}x)$, $E=59, 90, 120, 160$ MeV; measured $\ensuremath{\sigma}(\ensuremath{\epsilon}, \ensuremath{\vartheta})$, $\ensuremath{\sigma}(\ensuremath{\epsilon})$; exciton coalescence model analysis, thermodynamics of light nuclei production.