Randall C. Thompson

Study of the 188Os(p, t)186Os, 190Os(p, t)188Os AND 192Os(p, t)190Os reactions

Abstract Cross sections and angular distributions have been measured for a number of levels populated in the 188 Os(p, t) 186 Os, 190 Os(p, t) 188 Os and 192 Os(p, t) 190 Os reactions. Particular emphasis is placed on the identification of J π = 0 + levels. Excited levels with spin and parity of 0 + were observed in 186 Os at 1061, 1456, 1953 and 1990 keV; in 188 Os at 1085, 1477, 1703 and 1823 keV; and in 190 Os at 911, 1543 and 1732 keV. The total percentages of the measured excited l = 0 transfer strength relative to the respective ground state strength for the three nuclei are 186 Os, 7 %; 188 Os, 11 %; and 190 Os, 11 %. The relative strengths of the (p, t) ground state transitions for 190 Os, 188 Os, 186 Os are 1 : 0.80 : 0.70. Ground state Q -values for the (p, t) reaction on 188,189,190,192 Os targets are measured.

Study of nuclear-coulomb interference effects in inelastic deuteron scattering on 238U☆

Abstract The angular distributions of elastically and inelastically scattered deuterons from 238 U at E = 17 MeV are compared to coupled-channel calculations. The cross sections at small scattering angles are strongly influenced by nuclear-Coulomb interference effects and allow a simultaneous extraction of nuclear (optical potential) and charge quadrupole deformation parameters. Two different deformed Coulomb potentials and the parameters of the optical model are discussed.