Nuclear structure studies performed using the (¹⁸O,¹⁶O) two-neutron transfer reactions

Abstract

Excitation energy spectra and absolute cross section angular distributions were measured for the 13 C( 18 O, 16 O) 15 C two-neutron transfer reaction at 84 MeV incident energy. This reaction selectively populates two-neutron configurations in the states of the residual nucleus. Exact finite-range coupled reaction channel calculations are used to analyse the data. Two approaches are discussed: the extreme cluster and the newly introduced microscopic cluster. The latter makes use of spectroscopic amplitudes in the centre of mass reference frame, derived from shell-model calculations using the Moshinsky transformation brackets. The results describe well the experimental cross section and highlight cluster configurations in the involved wave functions.