Pulse-burst laser-based 10 kHz Thomson scattering measurements
Abstract
Thomson scattering (TS), as a popular and reliable diagnostic technique, has successfully measured electron temperatures and electron number densities of plasmas for many years. However, conventional TS techniques using Nd:YAG lasers operate only at tens of hertz. Here, we present the development of a high-repetition-rate TS instrument based on a high-speed, pulse-burst laser system to greatly increase the temporal resolution of measurements. Successful instrument prototype testing by collecting TS light from laboratory helium and argon plasmas at 10 kHz, was carried out. Calibration of the instrument detection sensitivity using nitrogen/oxygen rotational Raman scattering signal is also presented. Quantitative electron number densities and electron temperatures of the plasma were acquired at 10 kHz, for stable plasma discharges as, respectively, ~0.9 eV and ~5.37 × 1021 m-3 for the argon plasma, and ~1 eV and ~ 6.5 × 1021 m-3 for the helium plasma.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Spectral Energies LLC, Dayton, OH (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Spectral Energies LLC, Dayton, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1564185
- Alternate Identifier(s):
- OSTI ID: 1657657
- Grant/Contract Number:
- AC05-00OR22725; SC0018672
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Science and Technology
- Additional Journal Information:
- Journal Volume: 21; Journal Issue: 10; Journal ID: ISSN 1009-0630
- Publisher:
- IOPScience
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; high speed; Thomson scattering; electron temperature; electron number density; high-speed
Citation Formats
He, Zichen, Smith, Cary, Zhang, Zhili, Biewer, Theodore M., Jiang, Naibo, Hsu, Paul S., and Roy, Sukesh. Pulse-burst laser-based 10 kHz Thomson scattering measurements. United States: N. p., 2019.
Web. doi:10.1088/2058-6272/ab2e30.
He, Zichen, Smith, Cary, Zhang, Zhili, Biewer, Theodore M., Jiang, Naibo, Hsu, Paul S., & Roy, Sukesh. Pulse-burst laser-based 10 kHz Thomson scattering measurements. United States. https://doi.org/10.1088/2058-6272/ab2e30
He, Zichen, Smith, Cary, Zhang, Zhili, Biewer, Theodore M., Jiang, Naibo, Hsu, Paul S., and Roy, Sukesh. Fri .
"Pulse-burst laser-based 10 kHz Thomson scattering measurements". United States. https://doi.org/10.1088/2058-6272/ab2e30. https://www.osti.gov/servlets/purl/1564185.
@article{osti_1564185,
title = {Pulse-burst laser-based 10 kHz Thomson scattering measurements},
author = {He, Zichen and Smith, Cary and Zhang, Zhili and Biewer, Theodore M. and Jiang, Naibo and Hsu, Paul S. and Roy, Sukesh},
abstractNote = {Thomson scattering (TS), as a popular and reliable diagnostic technique, has successfully measured electron temperatures and electron number densities of plasmas for many years. However, conventional TS techniques using Nd:YAG lasers operate only at tens of hertz. Here, we present the development of a high-repetition-rate TS instrument based on a high-speed, pulse-burst laser system to greatly increase the temporal resolution of measurements. Successful instrument prototype testing by collecting TS light from laboratory helium and argon plasmas at 10 kHz, was carried out. Calibration of the instrument detection sensitivity using nitrogen/oxygen rotational Raman scattering signal is also presented. Quantitative electron number densities and electron temperatures of the plasma were acquired at 10 kHz, for stable plasma discharges as, respectively, ~0.9 eV and ~5.37 × 1021 m-3 for the argon plasma, and ~1 eV and ~ 6.5 × 1021 m-3 for the helium plasma.},
doi = {10.1088/2058-6272/ab2e30},
journal = {Plasma Science and Technology},
number = 10,
volume = 21,
place = {United States},
year = {Fri Aug 09 00:00:00 EDT 2019},
month = {Fri Aug 09 00:00:00 EDT 2019}
}
Web of Science
Figures / Tables:
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