Ja. Kernahan et al., BEAM-FOIL LIFETIME MEASUREMENTS IN CU-LIKE NB-XIII AND ZN-LIKE NB-XII, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 98(1-4), 1995, pp. 57-61
The beam-foil technique has been employed to obtain decay curves of va
rious n = 4 levels in Cu- and Zn-like ions of Nb. The problems encount
ered when using different evaluation techniques (multiexponential fits
, ANDC, cascade model simulation) are discussed. The lifetime results
are compared to theoretical predictions.