Accession Number : AD0617459

Title :   PHASE-SHIFT ANALYSIS FOR HE3(P,P)HE3,

Corporate Author : CALIFORNIA INST OF TECH PASADENA

Personal Author(s) : Tombrello,T. A.

Report Date : 04 NOV 1964

Pagination or Media Count : 8

Abstract : A phase-shift analysis based on the scattering and polarization data for the reaction He3(p,p)He3 was made for proton energies between 1.0 and 11.5 MeV. The singlet and triplet S-wave phase shifts are found to be negative and approximately equal; they are in good agreement with the resonating-group calculations of Bransden and Robertson. The P-wave phase shifts are positive and increase with energy; a single-level parametrization of these phase shifts indicates the possible presence of triplet states with J(pi)=2(-), 1-, 0- at center-of-mass energies 4.74, 6.15, and 7.94 MeV above the p+He3 threshold. All three levels have reduced widths that are comparable with the Wigner limit. The presence of a broad singlet 1- level at 9.8 MeV is indicated with somewhat less confidence. (Author)

Descriptors :   (*PROTON SCATTERING, HELIUM), (*PHASE SHIFT CIRCUITS, PROTON SCATTERING), NUCLEAR RESONANCE, DIFFERENTIAL CROSS SECTIONS, EXCITATION, NUCLEAR SPINS, NUCLEAR ENERGY LEVELS, POLARIZATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE