Spatially resolved argon microplasma diagnostics by diode laser absorption
Abstract
Microplasmas were diagnosed by spatially resolved diode laser absorption using the Ar 801.4 nm transition (1s{sub 5}-2p{sub 8}). A 900 MHz microstrip split ring resonator was used to excite the microplasma which was operated between 100-760 Torr (13-101 kPa). The gas temperatures and the Ar 1s{sub 5} line-integrated densities were obtained from the atomic absorption lineshape. Spatially resolved data were obtained by focusing the laser to a 30 {mu}m spot and translating the laser path through the plasma with an xyz microdrive. At 1 atm, the microplasma has a warm core (850 K) that spans 0.2 mm and a steep gradient to room temperature at the edge of the discharge. At lower pressure, the gas temperature decreases and the spatial profiles become more diffuse.
- Authors:
-
- Electrical and Computer Engineering, Tufts University, 161 College Avenue, Medford, Massachusetts 02155 (United States)
- Publication Date:
- OSTI Identifier:
- 21538004
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 109; Journal Issue: 1; Other Information: DOI: 10.1063/1.3531557; (c) 2011 American Institute of Physics; Journal ID: ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ARGON; ELECTRIC DISCHARGES; ELECTRON TEMPERATURE; ENERGY-LEVEL TRANSITIONS; ION TEMPERATURE; MHZ RANGE; PLASMA; PLASMA DENSITY; PLASMA DIAGNOSTICS; RESONATORS; RINGS; SEMICONDUCTOR LASERS; TEMPERATURE RANGE 0273-0400 K; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; FLUIDS; FREQUENCY RANGE; GASES; LASERS; NONMETALS; RARE GASES; SEMICONDUCTOR DEVICES; SOLID STATE LASERS; SORPTION; TEMPERATURE RANGE
Citation Formats
Miura, Naoto, and Hopwood, Jeffrey. Spatially resolved argon microplasma diagnostics by diode laser absorption. United States: N. p., 2011.
Web. doi:10.1063/1.3531557.
Miura, Naoto, & Hopwood, Jeffrey. Spatially resolved argon microplasma diagnostics by diode laser absorption. United States. https://doi.org/10.1063/1.3531557
Miura, Naoto, and Hopwood, Jeffrey. 2011.
"Spatially resolved argon microplasma diagnostics by diode laser absorption". United States. https://doi.org/10.1063/1.3531557.
@article{osti_21538004,
title = {Spatially resolved argon microplasma diagnostics by diode laser absorption},
author = {Miura, Naoto and Hopwood, Jeffrey},
abstractNote = {Microplasmas were diagnosed by spatially resolved diode laser absorption using the Ar 801.4 nm transition (1s{sub 5}-2p{sub 8}). A 900 MHz microstrip split ring resonator was used to excite the microplasma which was operated between 100-760 Torr (13-101 kPa). The gas temperatures and the Ar 1s{sub 5} line-integrated densities were obtained from the atomic absorption lineshape. Spatially resolved data were obtained by focusing the laser to a 30 {mu}m spot and translating the laser path through the plasma with an xyz microdrive. At 1 atm, the microplasma has a warm core (850 K) that spans 0.2 mm and a steep gradient to room temperature at the edge of the discharge. At lower pressure, the gas temperature decreases and the spatial profiles become more diffuse.},
doi = {10.1063/1.3531557},
url = {https://www.osti.gov/biblio/21538004},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 1,
volume = 109,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2011},
month = {Sat Jan 01 00:00:00 EST 2011}
}