P. Petkov et al., Gating on the feeding or on the depopulating transition in coincidence recoil-distance Doppler-shift lifetime measurements, NUCL INST A, 457(3), 2001, pp. 527-530
Two alternative ways of setting gates and lifetime determination in coincid
ence RDDS measurements are investigated for the case of two consecutive gam
ma -ray transitions. Assuming a very general perturbed angular correlation
function, it is shown that only the approach where the gate is set on the f
light peak of the feeding transition gives results which are not influenced
by the hyperfine interactions. (C) 2001 Elsevier Science B.V. All rights r
eserved.