Theoretical Studies of the Electronic and Resonance Structure of Atomic and Molecular Negative Ions.

摘要

This technical program constitutes a theoretical research investigation of the electronic structure of atomic and molecular ions and of radiative and collisional processes describing their formation and/or destruction. This study is directed toward elucidating the structure of both thermodynamically stable cations and anions, and resonance or metastable excited states in such systems. In addition, this study will include an analysis of the effects of both static E-fields and time dependent laser fields on resonance excitation, stimulated autodetachment and radiative electron attachment processes in negative ion systems and ion-pair production in Rydberg atom collisions. The goals of this research program are to develop accurate computational techniques which are applicable to studies of the electronic structure and radiative properties of small atomic and molecular ions and to carry out detailed calculations of the structure of several prototype species, including light element alkalis, alkaline earths and the noble gases. It is anticipated that the results of this program will furnish fundamental data and provide a better understanding of several detailed experimental studies that are currently in progress in this area, including work at SRI and ORNL. Areas of application of this research work include thermonuclear reactor programs, neutral and negative ion particle beam source development, high current switching devices and discharge plasma devices.