Elastic and Inelastic Scattering of Protons on Ne²² and the T=1⁄2 and T=3⁄2 Energy Levels of Na²³

Abstract

Excitation functions for elastic scattering of protons on Ne²² were studied at θ_c.m.=56.9°, 92.6°, 125.7°, 140.8° and 151.3° in the energy range E_p=0.94−4.2 MeV. The excitation function for protons inelastically scattered to the first excited state of Ne²² was measured at θ_lab.=139.1° above E_p=2.1 MeV and the γ rays following them were observed below E_p=2.1 MeV.
A total of 75 resonances was observed corresponding to Na²³ levels between 9.7 MeV and 12.8 MeV. Several pronounced resonances are analysed using the single level approximation of the dispersion formula, and level parameters are assigned. The T=3⁄2 isobaric analogue states in Na²³ and Ne²³ are discussed.