Vector analyzing powers for /sup 1/H(d-italic-arrow-right,/gamma/)/sup 3/He and /sup 2/H(p-arrow-right,/gamma/)/sup 3/He

The vector analyzing powers for the /sup 1/H(d-italic-arrow-right,/gamma/)/sup 3/He and /sup 2/H(p-arrow-right,/gamma/) /sup 3/He reactions have been measured near threshold (E/sub /gamma// = 7.5 MeV). The angular distribution of the cross section was also measured for the /sup 2/H(p,/gamma/)/sup 3/He reaction. The ratio of the analyzing powers is sensitive to the presence of S = (3/2 capture strength. It was found that a 10% contribution to the capture by M1 radiation (predominantly S = (3/2) is required to explain the data.