Nuclear-structure effects in proton evaporation spectra

D. G. Sarantites; C. Baktash; N. G. Nicolis; G. Garcia-Bermudez; V. Abenante; J. R. Beene; N. R. Johnson; M. L. Halbert; D. C. Hensley; F. K. McGowan; H. C. Griffin; I. Y. Lee; Z. Majka; M. A. Riley; T. M. Semkow; D. W. Stracener; A. Virtanen

doi:10.1103/PhysRevLett.64.2129

Nuclear-structure effects in proton evaporation spectra

D. G. Sarantites, C. Baktash, N. G. Nicolis, G. Garcia-Bermudez, V. Abenante, J. R. Beene, N. R. Johnson, M. L. Halbert, D. C. Hensley, F. K. McGowan, H. C. Griffin, I. Y. Lee, Z. Majka, M. A. Riley, T. M. Semkow, D. W. Stracener, and A. Virtanen

Phys. Rev. Lett. 64, 2129 – Published 30 April 1990

Abstract

Energy spectra and angular distributions of evaporated protons from the reaction ${}^{52}{Cr}$ $(^{34}$ S, 2p2n $)^{82}$ Sr at 130 MeV were measured in coincidence with discrete γ transitions. Large shifts and changes in the shape of the proton spectra were observed when high-spin states in different rotational bands are populated. They are interpreted as due to near-yrast stretched proton emission, which preferentially populates the yrast band by subbarrier protons.