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Many configurations have been proposed to use highpower laser radiation for acceleration of the charged particles [1]. Required power density for such experiments varied from 10 W/cm up to 10 W/cm. For example, X-rays of MeV energy have been produced by accelerated plasma electrons when laser beam with intensity of 5*10 W/cm was focused on tantalum sheet. Energy of these X-rays was high enough to initiate a set of nuclear reactions, which have been registered experimentally [2]. We investigate an influence of coherent electromagnetic radiation on different types of radioactive decay. Our experiments indicate that some nuclear reactions can be initiated even at laser beam intensity about 1*10 W/cm. The key feature is the presence of metallic (chemically inactive Au as a rule) nanoparticles. In plasmon resonance regime the wave field near nanoparticles can be concentrated up to the necessary level. Layout of the typical experiment is shown on fig. 1.

Influence of intense coherent electromagnetic radiation on several types of radioactive decay