An absolute standard for deuteron vector analyzing powers

Abstract

Abstract Deuteron induced reactions with the spin-parity structure 1 + +0 + →0 + +0 − have properties which allow an absolute determination of iT 11 . It is shown that, under certain conditions, one can accurately determine the vector analyzing power for such reactions by making relatively inaccurate measurements of the tensor analyzing powers. The vector analyzing power of the reaction 16 O ( d , α 3 ) 14 N is determined with an accuracy of better than 1% at E d =6.84 MeV and θ lab =29°. To provide a convenient secondary standard, the vector analyzing power of 3 He( d , p) 4 He at E d =6.44 MeV is determined to better than 1% by direct comparison with the 16 O ( d , α 3 ) 14 N reaction.