Author

Edward Perez

Graduation Semester and Year

2020

Language

English

Document Type

Thesis

Degree Name

Master of Science in Physics

Department

Physics

First Advisor

Alexander Weiss

Abstract

This thesis reports on the characterization of a clinoptilolite zeolite (〖Na〗_3 [〖Al〗_3 〖Si〗_15 O_36 ]12H_2 O) using Energy-dispersive X-ray spectroscopy (EDX/EDS) for chemical analysis, low energy Secondary Electron (SE) analysis for three-dimensional imaging and topography, and Transmission Electron Microscopy (TEM) for two-dimensional imaging at the nanometer level. The goal of this work was to provide additional information that can aid in the interpretation of the data obtained using positron beam based spectroscopies. The measurements were performed using the Hitachi S-3000N Variable Pressure Scanning Electron Microscope (SEM) integrated with a NORAN 7 EDS/EBSD system, the Hitachi S-4800 II Field Emission Scanning Electron Microscope (FESEM), and the Hitachi H-9500 High-Resolution Transmission Electron Microscope (HRTEM) all located in the Characterization Center for Materials and Biology (CCMB) laboratory at the University of Texas at Arlington (UTA). The data assisted in the characterization of the crystal structure and chemical composition of the zeolite samples. The properties determined were used in calculations to estimate the fraction of positrons that will diffuse to the internal surfaces of the zeolite and to provide insight into the possible outcomes of the positron experiments.

Keywords

Clinoptilolite, Positron annihilation, Auger

Disciplines

Physical Sciences and Mathematics | Physics

Comments

Degree granted by The University of Texas at Arlington

Included in

Physics Commons

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