Absolute spectroscopic factors from the (p, pα) reaction at 100 MeV on1p-shell nuclei

Abstract

The ($p, p\ensuremath{\alpha}$) reaction on $^{6}\mathrm{Li}$, $^{7}\mathrm{Li}$, $^{9}\mathrm{Be}$, and $^{12}\mathrm{C}$ has been investigated experimentally at a bombarding energy of 100 MeV. Data were obtained at a large number of angle pairs in order to study the reaction mechanism. The data are in good agreement with distorted-wave impulse-approximation calculations; unlike most analyses of transfer reactions we obtain absolute $\ensuremath{\alpha}$-particle spectroscopic factors. These are in good agreement with $1p$ shell model predictions. Thus we find no evidence for additional $\ensuremath{\alpha}$-particle-like correlations.NUCLEAR REACTIONS $^{6}\mathrm{Li}$, $^{7}\mathrm{Li}$, $^{9}\mathrm{Be}$, $^{12}\mathrm{C}(p, p\ensuremath{\alpha})$, ${E}_{0}=100$ MeV; measured $\frac{{d}^{3}\ensuremath{\sigma}}{d{\ensuremath{\Omega}}_{p}d{\ensuremath{\Omega}}_{\ensuremath{\alpha}}d{E}_{p}}({\ensuremath{\theta}}_{p}, {\ensuremath{\theta}}_{\ensuremath{\alpha}}, {E}_{p}, {E}_{\ensuremath{\alpha}})$; coplanar geometry; DWIA analysis; deduced $\ensuremath{\alpha}$-particle spectroscopic factors.