Proton spectra from 800 MeV protons on selected nuclides

Abstract

The emission of protons from targets of $^{6}\mathrm{Li}$, Li, $^{12}\mathrm{C}$, $^{27}\mathrm{Al}$, $^{40}\mathrm{Ca}$, $^{51}\mathrm{V}$, $^{90}\mathrm{Zr}$, and Pb under bombardment from 800 MeV protons has been studied using a high resolution proton spectrometer. Spectra were measured at laboratory scattering angles of 5\ifmmode^\circ\else\textdegree\fi{}, 7\ifmmode^\circ\else\textdegree\fi{}, 9\ifmmode^\circ\else\textdegree\fi{}, 11\ifmmode^\circ\else\textdegree\fi{}, 13\ifmmode^\circ\else\textdegree\fi{}, 15\ifmmode^\circ\else\textdegree\fi{}, 20\ifmmode^\circ\else\textdegree\fi{}, 25\ifmmode^\circ\else\textdegree\fi{}, and 30\ifmmode^\circ\else\textdegree\fi{} with special emphasis on the quasifree region. Outgoing momenta corresponding to the region of pion production were examined at 11\ifmmode^\circ\else\textdegree\fi{} and 15\ifmmode^\circ\else\textdegree\fi{}. Absolute cross sections have been derived by reference to known ($p$,$p$) scattering data at 800 MeV. The quasifree scattering has been compared to a distorted-wave impulse approximation analysis by summing over the unobserved (struck) nucleon. The systematics of proton production and the applicability of the distorted-wave impulse approximation analyses are discussed.NUCLEAR REACTIONS ($p$,${p}^{\ensuremath{'}}$) on $^{6}\mathrm{Li}$, Li, $^{12}\mathrm{C}$, $^{27}\mathrm{Al}$, $^{40}\mathrm{Ca}$, $^{51}\mathrm{V}$, $^{90}\mathrm{Zr}$, Pb; ${E}_{p}=800$ MeV, ${\ensuremath{\theta}}_{L}=5\ifmmode^\circ\else\textdegree\fi{} \mathrm{to} 30\ifmmode^\circ\else\textdegree\fi{}$; quasielastic scattering, DWIA analysis.