Gamma-ray lasing: Proposals for tomorrow's feasible experiment

The novel branch of physics called quantum nucleonics extends the basic pri nciples of induced boson emission, successfully applied in optical laser ph ysics, to a new class of quantum oscillators, namely, nuclei and antipartic les, and to a more energetic range of coherent photons (keV and even MeV). After presenting the brief outlines of the problem outset and modern state of the art, including the main physical obstacles for today's observation o f induced Mossbauer gamma-ray emission by excited nuclei embedded in a soli d matrix, we discuss the feasibility of an alternative eventual gamma-ray l asing experiment using cooled populations of free isomer nuclei with hidden inversion, which does not demand the excited nuclei to outnumber the unexc ited ones and arises due to nuclear recoil effects accompanying every radia tive transition. It is important that both Stokes/anti-Stokes and so-called "two-level" pumping processes obeying the same recoil rules might be adequ ate for excitation of cooled nuclei. These attempts are aimed at bypassing the known obstacles of an ordinary solid state approach, Finally we outline the possible basic setup scheme and the main constituent problems to be so lved.