Analyzing powers of polarized deuterons in low-energy 6Li(d,α)4He and 6Li(d,p0)7Li reactions in a resonance region

Low-energy Li-6(d,alpha)He-4 and Li-6(d,p(0))Li-7 reactions are affected by the 2(+) resonance level of Be-8 at E-x similar or equal to 22.2 MeV. In this work, we present a new method to extract fractions of the 2(+) components of the reactions, which include the resonance, by using the tensor-analyzing powers, T-2q, of polarized deuterons. We measured T-2q for q=0,1,2 at the very low incident energy E-d=90 keV and analyzed the data by the invariant amplitude method giving the 2(+) fractions as 0.90 +/- 0.05 for Li-6(d,p) and 0.998 +/- 0.003 for Li-6(d,alpha). For Li-6(d,p), it was comparable to the resonance fraction extracted from cross-section data, whereas for Li-6(d,alpha), the 2(+) fraction was much larger than the resonance fraction extracted from cross-section data. A part of the analyses was extended to higher energies up to 960 keV.