Abstract
The H(n,γH reaction has been studied with polarized and unpolarized neutrons of energies ranging from 9 to 14 MeV. Angular distributions of cross section were measured at (lab)=9.0, 10.8, and 14.0 MeV, σ(90°) was measured at 6.85 MeV, and an analyzing-power angular distribution was measured at 9.0 MeV. The results for σ(theta) agree with the existing (γ,nH data after detailed balancing. The resulting (γ,p)H(γ,n) ratio for 90° cross sections is 1.1±0.15 down to =10.8 MeV. The T-matrix analysis of the data indicates ∼3% for the E2 contribution to the capture cross section—comparable to that found earlier for (p,γHe and in contrast to the predictions [=1/25] of a two-body direct-capture calculation.
- Received 5 February 1986
DOI:https://doi.org/10.1103/PhysRevC.34.389
©1986 American Physical Society