Index Catalog // ScholarsArchive@OSU

Nitrogen isotope abundance ratio determination using molecular emission spectrometry

Creator:: Eierman, Robert J.
Resource Type:: Dissertation
Full Text:: Molecular Emission Spectrometry AN ABSTRACT OF THE THESIS OF Robert J. Eierman for the degree of Doctor

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

Creator:: Lee, Gae Ho
Abstract:: Plasma sources with multiple electrodes have been developed and characterized in this research for atomic emission spectroscopy. Multi-electrode plasma sources use electrodes to shape the plasma in order to continuously entrain a sample stream in the center of hot plasma, in a manner similar to an inductively coupled plasma (ICP)...
Resource Type:: Dissertation
Full Text:: my family for their never failing love and support. CONTRIBUTION OF AUTHORS Gae H. Lee Edward H

An atmospheric pressure glow discharge detector for capillary column gas chromatography

Creator:: Baur, Susanna S.
Abstract:: The change in the oscillation frequency in the current of an atmospheric helium glow discharge is a sensitive detector for gas chromatography. The response of the detector is in the femtomole and picomole range for nonane and decane. The effluent of a capillary column is directed into a glow discharge...
Resource Type:: Masters Thesis
Full Text:: Discharge Detector for Capillary Column Gas Chromatography. Abstract approved: Edward H. Piepmeier The

Fundamental studies of a gas-jet enhanced sputtering system and its applications

Creator:: Kim, Hyo-jin
Abstract:: The use of gas jets in a sputtering cell makes this direct sampling method practical for atomic absorption and mass spectrometry determinations. With a commercial six-jet sputtering source, the Atomsource (Analyte Corp., Grants Pass, Oregon), that directly atomizes solid samples for conventional atomic absorption spectrophotometers, the sample loss rate for...
Resource Type:: Dissertation
Full Text:: Sputtering System and its Applications Abstract approved: Redacted for Privacy Edward H. Piepmeier The

A new glow discharge detector for carbohydrates in aqueous chromatography

Creator:: Herring, Christopher Jackson
Abstract:: An atmospheric pressure argon glow discharge is shown to detect trace levels of carbohydrates in aqueous flowing systems, using either of two glow discharge solution interface configurations. The first configuration consists of an oscillating glow discharge sustained between a flowing aqueous cathode and platinum anode. Picomole and micromolar mass and...
Resource Type:: Dissertation
Full Text:: Flowing Liquid System Christopher J. Herring and Edward H. Piepmeier Published in Analytical

Studies of glow discharge oscillations and jet-enhanced cathodic sputtering

Creator:: Zhu, Zhubiao
Abstract:: Three aspects of glow discharges have been studied: glow discharge oscillations, sputtering, and coupling between cathode and anode regions the two most important regions in a glow discharge. Cathode and anode processes are tightly coupled by electron and ion coupling effects. Both electron and ion coupling effects were observed by...
Resource Type:: Dissertation
Full Text:: Cathodic Sputtering Abstract approved: Edward H. Piepmeier Three aspects of glow discharges have been

Investigation of the relationships between laser energy and vaporized target material, continuum intensity, and plume energy in laser plume spectroscopy

Creator:: Flugstad, Paul Morris
Abstract:: A focused Q-switched neodymium-doped glass laser with power levels ranging from 1-6 MW and with a 50-nsec halfwidth, was used to vaporize copper metal. Experimental measurements showed that the amount of material vaporized away from the target was not linear with laser power and was much less than could be...
Resource Type:: Masters Thesis
Full Text:: express his gratitude to Dr. Edward Piepmeier for his help, guidance and encouragement throughout the

Spectroscopic investigation of atomic and molecular species formed in a laser microprobe plasma using a wavelenth calibrated tunable dye laser

Creator:: Beenen, Gerhard Joseph
Abstract:: The temporal and spatial characteristics of a laser microprobe plume were investigated using the spectroscopic methods of emission, absorption and fluorescence. The plume was produced by rapid vaporization of a small quantity (1 μg) of a solid sample using a focussed pulsed dye laser (110 MW/cm²). For absorption and fluorescence...
Resource Type:: Dissertation
Full Text:: components will be discussed in the following sections. 20 111110111111.1. C J R K G L U M

Design, construction, and characterization of a six-electrode, direct current, variable length plasma source for atomic emmission spectroscopy

Creator:: Shields, James Phillip
Abstract:: The variable length, six-electrode plasma source for atomic emission spectroscopy described here is operated from three compact, simple, and inexpensive direct current power supplies. The vertical arcs formed between the three electrode pairs completely entrain the sample and are typically operated at 40 V and 20 A. Three concentric quartz...
Resource Type:: Dissertation
Full Text:: /- Edward H. Piepmeier The variable length, six-electrode plasma source for atomic emission spectroscopy

A three-phase argon plasma arc for analytical emission spectroscopy

Creator:: Mattoon, Terence Richard
Abstract:: A new three-phase argon plasma arc was developed for analytical emission spectroscopy. The power supplied to the plasma arc utilized a simple circuit with three-phase as line voltage stepped down via a transformer to 104Vrms. A three concentric quartz tubing assembly was determined to be the optimum configuration for supplying...
Resource Type:: Masters Thesis
Full Text:: SPECTROSCOPY Abstract approved: Redacted for Privacy Edward H. Piepmeier A new three-phase argon plasma arc

ScholarsArchive@OSU

Nitrogen isotope abundance ratio determination using molecular emission spectrometry

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

An atmospheric pressure glow discharge detector for capillary column gas chromatography

Fundamental studies of a gas-jet enhanced sputtering system and its applications

A new glow discharge detector for carbohydrates in aqueous chromatography

Studies of glow discharge oscillations and jet-enhanced cathodic sputtering

Investigation of the relationships between laser energy and vaporized target material, continuum intensity, and plume energy in laser plume spectroscopy

Spectroscopic investigation of atomic and molecular species formed in a laser microprobe plasma using a wavelenth calibrated tunable dye laser

Design, construction, and characterization of a six-electrode, direct current, variable length plasma source for atomic emmission spectroscopy

A three-phase argon plasma arc for analytical emission spectroscopy

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