Theory of Nonlinear Generation of X-Radiation in a Crystal Subjected to Intense Electron Bombardment.
Final rept. 1 Oct 79-30 Sep 80,
ARIZONA RESEARCH LABS TUCSON
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Several aspects of the generation of x-rays in a crystal were investigated in order to explain some of the experimental results observed by Das Gupta. Sequential excitation of planes of two-level atoms in a crystal was shown to produce stimulated line radiation whose intensity varied exponentially with the incident electron beam current. This result agreed qualitatively with the experimental data. Swept excitation was also used to explain the increase in the amount of line radiation produced at a given electron beam current when the electrons energy was changed from 8.95 KeV to 16.997 KeV. The difference between the lifetime of an excited two-level atom in free space and the lifetime of the same atom in a lattice of nonresonant two-level atoms was also investigated. The resulting difference was attributed to Bragg scattering of the emitted radiation in the crystal and the bulk properties of the materiel. Author
- Nuclear Physics and Elementary Particle Physics