Short range order in lattice dynamics and the feasibility of exafs measurements

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dc.contributor.advisorWang, C. C.en_US
dc.contributor.committeeMemberTrammell, George T.en_US
dc.contributor.committeeMemberMiettinen, Hannu E.en_US
dc.creatorLaaksonen, Reima Tapanien_US
dc.date.accessioned2018-12-18T21:18:40Zen_US
dc.date.available2018-12-18T21:18:40Zen_US
dc.date.issued1985en_US
dc.description.abstractWe studied theoretically the kinetics of a bcc lattice near the critical temperature. Our motivation is to examine the feasibility of using the recently developed time-resolved EXAFS technique to study the lattice dynamics. We derived the kinetic equations using the quasi-chemical approximation and keeping the number of particles constant and allowing only atom-vacancy exchange process. We solved these equations for a relaxation process following a sudden temperature change. Our calculations show that the long-range order exhibits critical slowing-down, as expected. Also the non-linear coupling between short- and long-range order was observed. Because of this non-linear coupling the relaxation of the short-range also slows down near the critical temperature. Our results put stringent conditions on possible experiments.en_US
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent64 ppen_US
dc.identifier.callnoThesis Phys. 1985 Laaksonenen_US
dc.identifier.citationLaaksonen, Reima Tapani. "Short range order in lattice dynamics and the feasibility of exafs measurements." (1985) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/104195">https://hdl.handle.net/1911/104195</a>.en_US
dc.identifier.digitalRICE1822en_US
dc.identifier.urihttps://hdl.handle.net/1911/104195en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.titleShort range order in lattice dynamics and the feasibility of exafs measurementsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPhysicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
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