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Kozlowski, Robert Edward 2015-05-13T15:41:34Z 2015-05-13T15:41:34Z 10000-01-01 1982 1982 When relativistic electrons strike a single crystal target, sharp peaks are observed in the x-ray spectrum generated. One type of radiation, called coherent bremsstrahlung, results from coherent electron scattering by atoms arranged on the crystal lattice. The other type of radiation is channeling radiation. The electrons channeling near major crystal axes enter quantized orbits and emit x-ray photons as a consequence of transitions between orbits. I describe my observations of channeling and coherent bremsstrahlung spectra using 2 to 3 MeV electrons incident on targets 1 and 3 (mu)m thick. Large changes in channeling x-ray energies and intensities are observed over a narrow range of temperature from room temperature to 200(DEGREES)C. There are no such large changes in the coherent bremsstrahlung spectra under the same conditions. Intensity measurements over a range of thicknesses for both types of radiation are reported. Finally, changes in the energy of the highest energy channeling peak are found as the channeling axis is tilted away from the electron beam. Made available in DSpace on 2015-05-13T15:41:34Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8218501.PDF: 1753991 bytes, checksum: 7c87a53f874cd8ed05698369ddb6525b (MD5) Previous issue date: 1982 Embargo set by: Seth Robbins for item 78557 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 85 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1982. http://hdl.handle.net/2142/77346 (UMI)AAI8218501 eng Physics, Atomic X-Ray Generation by Mev Electrons in Silicon: Temperature, Tilt and Thickness Dependence text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.