Investigation of the 16O(7Li, t)20Ne and 15N(7Li, t)19F reactions with microscopic α-cluster plus core wave functions

Abstract The excitation of weak-coupling “4p-0h” and “4p-1h” states by the four-particle transfer reactions 16 O( 7 Li, t) 20 Ne and 15 N( 7 Li, t) 19 F is investigated with the finite-range DWBA treatment using the α reduced width amplitudes obtained by the generator coordinate method employed on extended Bloch-Brink type wave functions. In agreement with experiment, an enhancement of the cross section in the 15 N( 7 Li, t) 19 F transition over that in the 16 O( 7 Li, t) 20 Ne transition is found in the forward angle region where the direct process is expected to be dominant, although its magnitude is about 50–60 % of that observed.