TUNABILITY OF RADIATION GENERATED AT WAVELENGTHS BELOW 1-A BY ANTI-STOKES SCATTERING FROM NUCLEAR-LEVELS

In this paper, the results of three different sets of experiments were reported. The first set repeated the conventional rf sideband experiments. In the second set of experiments, a novel sample holder was used, which restricted the movements of the foil. In the resulting spectra, the sidebands were of greater magnitude and better quality, implying that, contrary to the magnetostriction model, fortuitous vibrations and mechanical resonances in the foil did not contribute to the generation of the sidebands. In the final series of experiments, the multiphoton nature of the sidebands was exploited to generate a spectrum of gamma-photon transmission intensity as a function of omega //r//f. These experiments constituted a nuclear analog to Raman spectroscopy. It was suggested that with certain modifications, these experiments would produce subangstrom, narrow-bandwidth radiation, tunable over several linewidths. Finally, other experiments were proposed in which, through exploitation of the strong EFG in ferroelectric materials, one could use anti-Stokes scattering in the nucleus to investigate the properties of whole classes of nuclear species.