FORMATION OF NEGATIVE IONS IN A GAS BY CHARGE TRANSFER FROM A FAST ATOMIC HYDROGEN BEAM
Abstract
Structure has been reported in the electron loss cross section for hydrogen atoms in H2. Study of the structure in various gases shows that there is no structure for collisions with argon but nine peaks of magnitude 10 to the -16th cm squared between 8 and 40 Kev in CO. Analysis of these peaks support the idea advanced for hydrogen gas that the peaks are caused by formation of negative ions in the target gas by a process in which the electron is captured as though it were a free electron. Mass spectroscopic study reveals that negative ions are formed when hydrogen atoms pass through CO, H2, O2 and H2O. The formation rate varies in CO as predicted from the loss cross section structure and the cross section is approximately 10 to the -16th cm squared. However the type of ions formed does not support the detailed model of the capture process. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1961
- Accession Number
- AD0256354
Entities
People
- Farid Hushfar
- T.m. Donahue
Organizations
- University of Pittsburgh