Journal article
On determining the fraction of metastable ions produced by direct ionization
Journal of instrumentation, Vol.12(11), pp.C11005-C11005
11/01/2017
DOI: 10.1088/1748-0221/12/11/C11005
Abstract
Laser-induced fluorescence (LIF) on metastable ions is a powerful tool in studying wave-particle interactions, velocity-space diffusion and other phenomena in plasmas under the proper conditions. However, measurements which probe particle interactions place restrictions on the metastable lifetime. Metastable states are produced both from direct ionization of neutral gas particles and ions in other electronic states, but the former metastable population will only faithfully represent processes which act on the ion dynamics in a time shorter than the metastable lifetime. A numerical simulation is performed to study the metastable lifetime effects using a Lagrangian approach for LIF. A theoretical model in determining the fraction of metastable ions produced from direct ionization is reported to provide corrections to the LIF measurements.
Details
- Title: Subtitle
- On determining the fraction of metastable ions produced by direct ionization
- Creators
- F. Chu - University of IowaS. W. Mattingly - University of IowaJ. Berumen - University of IowaR. Hood - University of IowaF. Skiff - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of instrumentation, Vol.12(11), pp.C11005-C11005
- DOI
- 10.1088/1748-0221/12/11/C11005
- ISSN
- 1748-0221
- eISSN
- 1748-0221
- Publisher
- Iop Publishing Ltd
- Number of pages
- 9
- Grant note
- DE-FG02-99ER54543 / U.S. Department of Energy; United States Department of Energy (DOE)
- Language
- English
- Date published
- 11/01/2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428781002771
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