Measurement of the total collisional ionization rates of Ne VI, VII, and VIII
Journal Article
·
· J. Phys., B (London); (United States)
The total collisional ionization rates of neon VI, VII and VIII were measured in a time-evolving theta-pinch plasma. The method used was to calculate the expected emission from our plasma using the measured time- and space-dependent electron density (10/sup 16/ - 10/sup 17/ cm/sup -3/) and temperature (120 to 400 eV). The semi-empirical ionization rates of Kunze and Lotz were used in the calculation and were adjusted, by multiplying with a constant, so that the predicted photon emission matched the observed line emission. The multiplicative factors, with estimated errors, required for best fit are: for neon VI, 0.15 +- 0.1; for neon VII, 0.4 +- 0.2; and for neon VIII, 0.7 +- 0.25. Also, a comparison is made between the semi-empirical rates used in this work and the recently calculated rates of Summers. These recently calculated rates were in good agreement with experiment for neon VII and VIII. For neon VI, however, the departure from experimental result was even farther than for the semi-empirical rate.
- Research Organization:
- Los Alamos Scientific Lab., NM
- OSTI ID:
- 5082622
- Journal Information:
- J. Phys., B (London); (United States), Journal Name: J. Phys., B (London); (United States) Vol. 10:2; ISSN JPAMA
- Country of Publication:
- United States
- Language:
- English
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