Accession Number : AD0830055
Title : PHONON AND PHOTON PARAMAGNETIC RESONANCE LINESHAPES IN RUBY.
Descriptive Note : Doctoral thesis,
Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Personal Author(s) : Crooker, Peter Peirce
Report Date : DEC 1967
Pagination or Media Count : 81
Abstract : Electron paramagnetic resonance (EPR) and acoustic paramagnetic resonance (APR) lineshapes have been measured for four transitions in ruby at 5.924 GHz. Cr concentrations varying from .005 per cent to 1 per cent were used. Second moments were calculated from the APR lines; half-widths were calculated from both EPR and APR lines. A theory is presented which yields the second moment in terms of sums over exchange and dipole-dipole interactions between Cr pairs. It is shown that the theory predicts moments much larger than measured due to the fact that the stronger Cr-Cr interactions lie outside the observed line. A qualitative calculation of the moment from the known interactions supports this conclusion. Finally, half-widths for both APR and EPR lines are compared and shown to be equal. (Author)
Descriptors : *RUBY), (*PARAMAGNETIC RESONANCE, RESONANCE ABSORPTION, MAGNETRONS, PARAMAGNETIC MATERIALS, DIPOLE MOMENTS, ALUMINUM COMPOUNDS, CHROMIUM COMPOUNDS, PHOTONS, PHONONS, MICROWAVES, REFLECTION, PULSE GENERATORS, SPECTROMETERS, CORRELATION TECHNIQUES, MATRICES(MATHEMATICS), ATOMIC ENERGY LEVELS, BONDING, CRYSTAL LATTICES, THESES.
Subject Categories : Lasers and Masers
Electricity and Magnetism
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE