Shape dependence of the deuteron radius

The expansion of the square of the ratio of the deuteron radius to the triplet neutron-proton scattering length is generalized to include the D-state component of the deuteron wave function. Although more than 98% of this ratio is independent of the potential model, the remainder is discussed in terms of the dependence on the deuteron D state and the nonlocality of the potential. The convergence for different expansion parameters, all of which …