Measurement of g factors in Zr-84,Zr-86 and Nb-87 by the recoil distance transient field gamma-gamma coincidence technique

Magnetic dipole moments of excited states in Zr-84 and the N=46 isotones Zr -86 and Nb-87 were measured. The recoil distance transient field method, wh ich is a coincidence technique combining the recoil distance and the transi ent field methods, was applied. The measurement was performed such that it was sensitive only to those excited states which were populated a few picos econds after the nuclear reaction. The influence of unobserved continuum fe eding on the measured precession angles can thus be neglected. The results are compared with the values obtained using other experimental techniques a nd with shell model calculations. [S0556-2813(99)01704-5].