Design and Modeling Studies of a MicroThetaPinch Plasma Source for Atomic Emission Spectrometry

Authors

Joel Goldberg

Edward Navarre

Published

January 1, 2003

Abstract

Previously, we have demonstrated the ability to create pulsed plasmas via coupling energy from a high-frequency high-voltage capacitive electrical discharge through a coil surrounding a cylindrical aluminum thin film. This so-called Theta-Pinch Plasma Gun was able to atomize solid samples deposited on the thin film and generate emission spectra suitable for AES. Here we will present results of electrical and magnetic field modeling studies exploring the possibility of miniaturizing this plasma source. The advantages of miniaturization include decreased electrical discharge requirements, enhanced coupling due to higher-frequency discharges, and higher magnetic fields due to decreased coil diameter. The role of the conductive metallic film will be explored and alternative coupling mechanisms investigated.

2003 FACSS Conference; Fort Lauderdale, FL, U.S.A.