Analyzing power of proton-nucleus elastic scattering between 80 and 180 MeV

Elastic scattering of polarized protons of 80-180 MeV from a number of target nuclei ($24<A<\mathrm{}208\mathrm{}$) has been measured. The systematic energy and target mass dependence of the cross section and analyzing power angular distributions is discussed. The data have been analyzed within the framework of a conventional optical potential model, and the behavior of the potential parameters as a function of energy is investigated. Comparisons are made with results obtained at energies greater than 180 MeV and with predictions obtained from microscopic models.

NUCLEAR REACTIONS ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}(\overrightarrow{p}, p)$, $E_p=134.7\mathrm{}$ MeV; ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}(\overrightarrow{p}, p)$, $E_p=134.5\mathrm{}$ MeV; ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}(\overrightarrow{p}, p)$, $E_p=80.2, 181.5$ MeV; ${}_{}{}^{90}{}_{}{}^{}\mathrm{Zr}(\overrightarrow{p}, p)$, $E_p=79.6, 98.7, 134.8, 160$ MeV; ${}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}(\overrightarrow{p}, p)$, $E_p=104\mathrm{}$ MeV; ${}_{}{}^{120}{}_{}{}^{}\mathrm{Sn}(\overrightarrow{p}, p)$, $E_p=104\mathrm{}$ MeV; ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}(\overrightarrow{p}, p)$, $E_p=79.8, 98, 182$ MeV; measured $\sigma \left(\theta \right)$, $A_y\left(\theta \right)$; optical-model analysis, deduced energy dependence, comparison with microscopic models.