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

Low-energy 6Li(d,α)4He and 6Li(d,p0)7Li reactions are affected by the 2+ resonance level of 8Be at Ex≅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, T2q, of polarized deuterons. We measured T2q for q=0,1,2 at the very low incident energy Ed=90 keV and analyzed the data by the invariant amplitude method giving the 2+ fractions as 0.90±0.05 for 6Li(d,p) and 0.998±0.003 for 6Li(d,α). For 6Li(d,p), it was comparable to the resonance fraction extracted from cross-section data, whereas for 6Li(d,α), 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