Ionization and excitation rate coefficients in argon and helium over a wide range of E/N
- Sandia National Lab., Albuquerque, NM (United States)
Experimentally and theoretically obtained ionization and excitation rate coefficients in helium and argon over a wide range of E/N are presented. The studies included E/N values from a few hundred to several thousand Td (1 Td = 10{sup {minus}17} V cm{sup 2}). Measurements were made in an electrodeless cell contained in an S-band waveguide immersed in a dc magnetic field and subjected to a pulsed microwave field at cyclotron resonance. These measurements are equivalent to experiments in dc electric fields, but avoid the complications that would results in a conventional cell due to electrode effects. The experiment is modeled by a time-dependent, spatially-independent Boltzmann calculation. The model incorporates a two-dimensional electron velocity distribution function and provides an exact numerical solution of the Boltzmann equation.
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 127927
- Report Number(s):
- CONF-920376--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 37; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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