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Study of /sup 208/Pb by inelastic proton scattering at 318 MeV

Thesis/Dissertation ·
OSTI ID:5552976
Elastic and inelastic proton scattering cross sections were measured for states in /sup 208/Pb at a bombarding energy of 318 MeV. The data covers the momentum transfer interval from 0.5 to 2.8 fm/sup -1/. The Distorted Wave Born Approximation analysis of the data was constrained by electron scattering results wherever possible. Low-lying, natural parity collective states were analyzed using the Impulse Approximation, and interactions of the density-dependent type. Distorting potentials for the inelastic calculations were obtained both phenomenologically and through a folding of static densities with the nucleon-nucleon interaction. The analysis of states of large angular momentum transfer is emphasized. J/sup ..pi../ = 14/sup -/ and two J/sup ..pi../ = 12/sup -/ transitions were observed. The single particle-hole configurations of the 12/sup -/ states were allowed to mix slightly to minimize differences in observed proton and electron quenching factors. This results in significant differences in the quenching of the 12/sub 1//sup -/ relative to the 12/sub 2//sup -/ in scattering for both probes. States of angular momentum transfer of 10/sup +/ and 12/sup +/ are also observed. Differences in proton and electron results for these natural parity transitions are noted.
Research Organization:
Minnesota Univ., Minneapolis (USA)
OSTI ID:
5552976
Country of Publication:
United States
Language:
English