Award Date

May 2023

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Physics and Astronomy

First Committee Member

Ashkan Salamat

Second Committee Member

Jason Steffen

Third Committee Member

Dean Smith

Fourth Committee Member

Oliver Tschauner

Number of Pages

159

Abstract

Static compression experiments on water ice are needed for precise characterization and discovery of new ice phases near room temperature. Here I present my efforts and the developments that have been made to reduce detrimental effects found in high-pressure experiments in order to acquire precise measurements on ice approaching 3 Mbar. Several key observations are made, relating to the phase transition of ice-VII to X, an intermediate phase I have named ice-VIIt and evidence of a post ice X phase. Some of these experiments have been replicated using D2O ice as well, in order to gain insight into nuclear quantum effects which can be probed through sampling different isotopes. Also explored, are the behavior of ices above room temperature by means of resistive and laser heating probed by Raman scattering and electrical transport measurements.

Keywords

Condensed matter; high pressure; ice

Disciplines

Physics

Degree Grantor

University of Nevada, Las Vegas

Language

English

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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