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dc.contributor.authorWeeks, Grady A.
dc.date.accessioned2012-08-29T23:34:16Z
dc.date.available2012-08-29T23:34:16Z
dc.date.issued1964
dc.identifier.urihttp://hdl.handle.net/10945/12797
dc.description.abstractThe spin-phonon interaction in pink ruby has been studied at 1.4 K by measurement of the absorption spectra for 5,33 gc/s acoustic pulses, EPR spectra were also measured in the 12,4 - 18,0 gc/s band. Both the EPR and acoustic line shapes were found to be essentially Gaussian except for a small, previously unreported asymmetry. The line widths were also measured. The acoustic line width at 1,4 K was found to be 55 mc/s as compared to 90 mc/s for the EPR spectra. In addition, the EPR line width was found to be temperature dependent. A new theoretical model for the calculation of EPR line width contributions from isotropic exchange effects in the high temperature limit for magnetically dilute systems is presented. The calculated line width and the experimental line width agree within a few percent. Precision measurements of the energy level structure were also made for ruby over the temperature range from 1.4 K to 300 degrees K. Significant temperature variation was found, dispite the fact that the previously published energy level structure was given to five figures without indication of temperature variation. The literature values appear to need modification in the second or third figure in some temperature ranges.
dc.description.urihttp://www.archive.org/details/paramagneticreso00week
dc.format.extent55 p.en_US
dc.language.isoen_US
dc.publisherMonterey, California: U.S. Naval Postgraduate Schoolen_US
dc.subject.lcshPhysicsen_US
dc.titleParamagnetic resonance absorption of phonons in pink ruby.en_US
dc.typeThesisen_US
dc.contributor.departmentDept. of Physics
dc.description.serviceU.S. Navy (U.S.N.) author.en_US
dc.description.serviceLieutenant Commander, U.S. Navy
dc.identifier.oclcocn640239267
etd.thesisdegree.namePh.D. in Physicsen_US
etd.thesisdegree.levelDoctoralen_US
etd.thesisdegree.disciplinePhysicsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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