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

The ($p, p\alpha$) 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 $\alpha$-particle spectroscopic factors. These are in good agreement with $1p$ shell model predictions. Thus we find no evidence for additional $\alpha$-particle-like correlations.