High-resolution study of the beta decay of Ti-41

An improved high-resolution study of the beta decay of Ti-41, produced in the Ca-40(He-3,2n) reaction at 40 MeV, has been performed at the Ion Guide Isotope Separator On-Line (IGISOL) facility. The beta-delayed radiation was detected by a low-energy charged-particle detector and a large Ge detector for gamma rays. The experimental beta-decay strength and its distribution, extracted from delayed-proton data, are compared with results of shell-model calculations in the sdfp space. The lowest J(pi) 3(+)/2, T = 3/2 state in (41) Sc, the isobaric analogue state of the Ti-41 ground state, is estimated to contain 10% isospin impurity. (C) 1997 Elsevier Science B.V.