Evaluation of the theta pinch as a sampling and excitation source for elemental analysis of solid refractory materials

Studies of a theta pinch discharge device were performed to assess its effectiveness as a sampling and excitation source for elemental analysis of refractory solids. Previous work demonstrated the ability of the discharge to produce spectra suitable for qualitative analysis, but quantitation could not be demonstrated due to insufficient and irreproducible sampling. It was deemed necessary to gain more information about the plasma dynamics to further optimize discharge parameters for improved sampling. Conclusions are based on measurements of plasma shock wave propagation, argon ion excitation temperature, and plasma sampling efficiency as they relate to alterations in induction coil geometry, discharge energy, discharge gas pressure, and sample positioning. A dual grating Echelle spectrometer with charge coupled device detection was constructed and characterized for obtaining spectroscopic data, and is discussed in detail.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Miller, Duane L.

Contributors dc:contributor

• Scheeline, Alexander

• Chemistry, Analytical

Statement dc:rights

• Copyright 1996 Miller, Duane L.

Language dc:language

eng

Identifier

9780591089073
AAI9702610
(UMI)AAI9702610

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20355