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The 2H(d,n)3He reaction at very low energies

The cross section for the 2H(d,n)3He reaction at energies relevant to fusion reactors is calculated within an approximate antisymmetrised one-step reaction model. Nuclear wavefunctions consistent with a realistic nucleon-nucleon interaction are used throughout. In marked contrast with previously reported approximate calculations of this type, which claim agreement with data, the authors find the data to be overestimated by two orders of magnitude for centre-of-mass energies of order 55 keV.