Abstract:
Angular distributions of cross sections and analyzing powers were measured for the H3(p,)4He reaction at incident proton energies of 2.0, 5.0, and 9.0 MeV. The 90°analyzing power was measured at 11 energies between 0.8 and 9.0 MeV. A transition matrix element analysis indicated that the inclusion of M1 strength gave better fits and eliminated the anomalously large D23 (E2) strength reported in earlier work. An E1-plus-E2 direct capture calculation was performed. It is shown that this calculation can be brought into agreement with the data if an M1 strength comparable to that found in the T-matrix element analysis (0.51.0% of the total capture cross section) is added. © 1989 The American Physical Society.
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