PHASE SHIFT ANALYSIS OF ELASTIC PROTON-DEUTERON SCATTERING AT INTERMEDIATE ENERGIES AND POSSIBLE EXCITED STATES IN 3He

Abstract

This chapter presents phase shift analysis of electron proton–deuteron scattering at intermediate energies and possible excited states in 3 He. In evaluating the theoretical cross sections, and -coupling and tensor interactions are neglected, therefore, and are conserved separately. Differential cross section at the center of the mass angle θ can be written as the sum of the suitably weighted contributions from doublet and quartet channels. At the energy below the deuteron breakup level, the imaginary parts of the phase shift equals zero. Because of the finite number of waves taken into account and the experimental errors, there are many good fits to the experimental values. Two set of values are taken into consideration in the experiment—Tjon, Sloan. In contrast to the initial values for the cross-sections of Tjon and Sloan, there are differences between theoretical and experimental curves; no discrepancies are seen between the fitted and the experimental curves, except for some single points, mainly in forward direction. The final results for both initial sets are almost equal, but rather much different from the initial values, which differ quite a lot by themselves, such that the credibility of the final values of the parameters is enhanced.