Theoretical Studies of Kinetic Mechanisms of Negative Ion Formation in Plasmas
Abstract
This technical program constitutes a theoretical research investigation of the kinetic mechanisms of negative ion formation in plasmas. This study was directed toward elucidating the mechanisms of the most important volume-dependent reactions that occur in hydrogen-ion H(-) (D(-)) source devices, primarily of the Belchenko-Dimov-Dudnikov (BDD) type and toward evaluating other light negative anions, such as (Li(-)), as possible sources. The primary goal of this research was to identify the most important reactions leading to negative ion production or destruction and to estimate these reactions leading to negative on production or destruction and to estimate these reaction rates as a function of system parameters such as density, composition and temperature. A further goal was to explore new chemical sources for the production of light mass negative atomic ions. Results of this program furnish data and provide direction for more detailed investigations into the kinetics of both gas phase and gas-surface reaction rates of importance in ion source devices and provide input for reliable modeling of such systems. This investigation was carried out using quantum mechanical methods. Both ab initio and density functional approaches wer employed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1985
- Accession Number
- ADA159044
Entities
People
- H. H. Michels
- R. H. Hobbs
Organizations
- United Technologies Corporation