Abstract

Abstract The neutron spectroscopic factor S n of the 7He ground state is extracted from an R-matrix analysis of a recent measurement of the 7Li(d, 2He)7He reaction with good energy resolution. The width extracted from a deconvolution of the spectrum is Γ = 183 ( 22 ) keV (full width at half maximum, FWHM). The result S n = 0.64 ( 9 ) is slightly larger than predictions of recent ‘ab initio’ Green's function Monte Carlo and fermionic molecular dynamics calculations.

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