INDUCED EMISSION OF GAMMA-RADIATION FROM ISOMERIC NUCLEI

We study the possibility to influence the lifetime of nuclear isomeric states with the aid of incident fluxes of photons. We assume that a n ucleus initially in an isomeric state \i] first absorbs an incident ph oton of energy E-ni to reach a higher intermediate state \n] and then the state \n] decays to a lower state \n]. In favorable cases the two- step induced emission rates become equal to the natural isomeric decay rates for incident power densities of the order of 10(10) W cm(-2).