Perturbative correction to the adiabatic approximation for reactions
arXiv:2107.03233 · doi:10.1088/1361-6471/ac105d
Abstract
The adiabatic distorted wave approximation (ADWA) is widely used by the nuclear community to analyse deuteron stripping (,) experiments. It provides a quick way to take into account an important property of the reaction mechanism: deuteron breakup. In this work we provide a numerical quantification of a perturbative correction to this theory, recently proposed in [R.C. Johnson, J. Phys. G: Nucl. Part. Phys. 41 (2014) 094005] for separable rank-one nucleon-proton potentials. The correction involves an additional, nonlocal, term in the effective deuteron-target ADWA potential in the entrance channel. We test the calculations with perturbative corrections against continuum-discretized coupled channel predictions which treat deuteron breakup exactly.
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