The Demonstration of the Feasibility of the Tuning and Stimulation of Nuclear Radiation.
Final rept. 1 Jul 81-31 Oct 88,
TEXAS UNIV AT DALLAS RICHARDSON
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A major effect was found that had defied the constructi on of a completely satisfactory explanation in terms involving only conventional processes of incoherent excitation. It was the generation of radiofrequency sidebands on the hyperfine Moessbauer spectra of Fe57 in ferromagnetic environments. Through the application to a ferromagnetic iron foil of a magnetic field oscillating at radiofrequencies, several new spectral lines were produced in addition to the usual six hyperfine components of the 14.4 keV transition in Fe57. A persistent complication arose from the geometry in which the radiofrequency H field was generally applied in the plane of the absorber foil, so that magnetostriction occurred in the direction perpendicular to the axis of propagation of the gamma-radiation. Very significant was the result that unlike the paramagnetic case this new model predicted a dependence of sideband intensity upon power that was drastically different from the magnetostrictive theories. Even more significant was that the new multiphoton model of nuclear sidebands was comprehensive enough to suggest new extrapolations and effects not previously apparent. The most exciting was the extensive range over which sidebands might be tuned. jhd
- Nuclear Physics and Elementary Particle Physics