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Title: Advanced Thomson scattering system for high-flux linear plasma generator

Abstract

An advanced Thomson scattering system has been built for a linear plasma generator for plasma surface interaction studies. The Thomson scattering system is based on a Nd:YAG laser operating at the second harmonic and a detection branch featuring a high etendue (f /3) transmission grating spectrometer equipped with an intensified charged coupled device camera. The system is able to measure electron density (n{sub e}) and temperature (T{sub e}) profiles close to the output of the plasma source and, at a distance of 1.25 m, just in front of a target. The detection system enables to measure 50 spatial channels of about 2 mm each, along a laser chord of 95 mm. By summing a total of 30 laser pulses (0.6 J, 10 Hz), an observational error of 3% in n{sub e} and 6% in T{sub e} (at n{sub e}= 9.4 Multiplication-Sign 10{sup 18} m{sup -3}) can be obtained. Single pulse Thomson scattering measurements can be performed with the same accuracy for n{sub e} > 2.8 Multiplication-Sign 10{sup 20} m{sup -3}. The minimum measurable density and temperature are n{sub e} < 1 Multiplication-Sign 10{sup 17} m{sup -3} and T{sub e} < 0.07 eV, respectively. In addition, using the Rayleigh peak, superimposedmore » on the Thomson scattered spectrum, the neutral density (n{sub 0}) of the plasma can be measured with an accuracy of 25% (at n{sub 0}= 1 Multiplication-Sign 10{sup 20} m{sup -3}). In this report, the performance of the Thomson scattering system will be shown along with unprecedented accurate Thomson-Rayleigh scattering measurements on a low-temperature argon plasma expansion into a low-pressure background.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ;  [1];  [2];  [3]
  1. FOM Institute DIFFER, Dutch Institute for Fundamental Energy Research, Association EURATOM-FOM, Trilateral Euregio Cluster, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands)
  2. IPh NASB, Minsk (Belarus)
  3. SRC TRINITI, Troitsk, Moscow Reg. (Russian Federation)
Publication Date:
OSTI Identifier:
22094032
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 12; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ARGON; CHARGE-COUPLED DEVICES; ELECTRON DENSITY; ELECTRON TEMPERATURE; EQUIPMENT; ION TEMPERATURE; LIGHT TRANSMISSION; NEODYMIUM LASERS; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA EXPANSION; PLASMA PRESSURE; RAYLEIGH SCATTERING; SENSORS; SPECTRA; SPECTROMETERS; TEMPERATURE MEASUREMENT; THOMSON SCATTERING; WALL EFFECTS

Citation Formats

Meiden, H. J. van der, Lof, A. R., Berg, M. A. van den, Brons, S., Eck, H. J. N. van, Koelman, P. M. J., Koppers, W. R., Kruijt, O. G., Oyevaar, T., Prins, P. R., Rapp, J., Scholten, J., Smeets, P. H. M., Star, G. van der, Zeijlmans van Emmichoven, P. A., Donne, A. J. H., Schram, D. C., Eindhoven University of Technology, Eindhoven, Naumenko, N. N., and Tugarinov, S. N. Advanced Thomson scattering system for high-flux linear plasma generator. United States: N. p., 2012. Web. doi:10.1063/1.4768527.
Meiden, H. J. van der, Lof, A. R., Berg, M. A. van den, Brons, S., Eck, H. J. N. van, Koelman, P. M. J., Koppers, W. R., Kruijt, O. G., Oyevaar, T., Prins, P. R., Rapp, J., Scholten, J., Smeets, P. H. M., Star, G. van der, Zeijlmans van Emmichoven, P. A., Donne, A. J. H., Schram, D. C., Eindhoven University of Technology, Eindhoven, Naumenko, N. N., & Tugarinov, S. N. Advanced Thomson scattering system for high-flux linear plasma generator. United States. https://doi.org/10.1063/1.4768527
Meiden, H. J. van der, Lof, A. R., Berg, M. A. van den, Brons, S., Eck, H. J. N. van, Koelman, P. M. J., Koppers, W. R., Kruijt, O. G., Oyevaar, T., Prins, P. R., Rapp, J., Scholten, J., Smeets, P. H. M., Star, G. van der, Zeijlmans van Emmichoven, P. A., Donne, A. J. H., Schram, D. C., Eindhoven University of Technology, Eindhoven, Naumenko, N. N., and Tugarinov, S. N. 2012. "Advanced Thomson scattering system for high-flux linear plasma generator". United States. https://doi.org/10.1063/1.4768527.
@article{osti_22094032,
title = {Advanced Thomson scattering system for high-flux linear plasma generator},
author = {Meiden, H. J. van der and Lof, A. R. and Berg, M. A. van den and Brons, S. and Eck, H. J. N. van and Koelman, P. M. J. and Koppers, W. R. and Kruijt, O. G. and Oyevaar, T. and Prins, P. R. and Rapp, J. and Scholten, J. and Smeets, P. H. M. and Star, G. van der and Zeijlmans van Emmichoven, P. A. and Donne, A. J. H. and Schram, D. C. and Eindhoven University of Technology, Eindhoven and Naumenko, N. N. and Tugarinov, S. N.},
abstractNote = {An advanced Thomson scattering system has been built for a linear plasma generator for plasma surface interaction studies. The Thomson scattering system is based on a Nd:YAG laser operating at the second harmonic and a detection branch featuring a high etendue (f /3) transmission grating spectrometer equipped with an intensified charged coupled device camera. The system is able to measure electron density (n{sub e}) and temperature (T{sub e}) profiles close to the output of the plasma source and, at a distance of 1.25 m, just in front of a target. The detection system enables to measure 50 spatial channels of about 2 mm each, along a laser chord of 95 mm. By summing a total of 30 laser pulses (0.6 J, 10 Hz), an observational error of 3% in n{sub e} and 6% in T{sub e} (at n{sub e}= 9.4 Multiplication-Sign 10{sup 18} m{sup -3}) can be obtained. Single pulse Thomson scattering measurements can be performed with the same accuracy for n{sub e} > 2.8 Multiplication-Sign 10{sup 20} m{sup -3}. The minimum measurable density and temperature are n{sub e} < 1 Multiplication-Sign 10{sup 17} m{sup -3} and T{sub e} < 0.07 eV, respectively. In addition, using the Rayleigh peak, superimposed on the Thomson scattered spectrum, the neutral density (n{sub 0}) of the plasma can be measured with an accuracy of 25% (at n{sub 0}= 1 Multiplication-Sign 10{sup 20} m{sup -3}). In this report, the performance of the Thomson scattering system will be shown along with unprecedented accurate Thomson-Rayleigh scattering measurements on a low-temperature argon plasma expansion into a low-pressure background.},
doi = {10.1063/1.4768527},
url = {https://www.osti.gov/biblio/22094032}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 12,
volume = 83,
place = {United States},
year = {Sat Dec 15 00:00:00 EST 2012},
month = {Sat Dec 15 00:00:00 EST 2012}
}