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. The primary goal of this research program was to identify the most important reactions leading to H- (D-) production or destruction and to estimate these reaction reats 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. The 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 were employed in these studies. Originator-supplied keywords included: potenital energy surface, negative ion, configuration-interaction, density-functional method, ion-molecule reactions, density-functional, ab initio calculations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1984
- Accession Number
- ADA150820
Entities
People
- H. H. Michels
- R. H. Hobbs
Organizations
- United Technologies Corporation