$\text{Ab initio}$ $n\alpha$ scattering using the Efros method

Abstract

We present the first $\text{ab initio}$ many-body application of the Efros method for scattering utilizing the harmonic oscillator expansion of the continuum wave function. We select single-channel $n\alpha$ scattering and, using low-lying eigenstates from no-core shell model (NCSM) calculations, we obtain well-converged scattering results that are in reasonable agreement with experiment. The results demonstrate that the Efros method is computationally practical and promising for further $\text{ab initio}$ many-body studies of nuclear reactions.

Comments: 8 pages, 3 figures, 1 table