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Title: Lineshape spectroscopy with a very high resolution, very high signal-to-noise crystal spectrometer

Abstract

Here, we have developed a high-resolution x-ray spectrometer for measuring the shapes of spectral lines produced from laser-irradiated targets on the Orion laser facility. The instrument utilizes a spherically bent crystal geometry to spatially focus and spectrally analyze photons from foil or microdot targets. The high photon collection efficiency resulting from its imaging properties allows the instrument to be mounted outside the Orion chamber, where it is far less sensitive to particles, hard x-rays, or electromagnetic pulses than instruments housed close to the target chamber center in ten-inch manipulators. Moreover, Bragg angles above 50° are possible, which provide greatly improved spectral resolution compared to radially viewing, near grazing-incidence crystal spectrometers. These properties make the new instrument an ideal lineshape diagnostic for determining plasma temperature and density. We describe its calibration on the Livermore electron beam ion trap facility and present spectral data of the K-shell emission from highly charged sulfur produced by long-pulse as well as short-pulse beams on the Orion laser in the United Kingdom.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3];  [4];  [4];  [4];  [4];  [4];  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. Erlangen-Nurnberg, Bamberg (Germany)
  3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  4. AWE plc, Reading (United Kingdom)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1411695
Alternate Identifier(s):
OSTI ID: 1255626
Report Number(s):
LLNL-JRNL-684087
Journal ID: ISSN 0034-6748
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 6; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Beiersdorfer, P., Magee, E. W., Brown, G. V., Chen, H., Emig, J., Hell, N., Bitter, M., Hill, K. W., Allan, P., Brown, C. R. D., Hill, M. P., Hoarty, D. J., Hobbs, L. M. R., and James, S. F. Lineshape spectroscopy with a very high resolution, very high signal-to-noise crystal spectrometer. United States: N. p., 2016. Web. doi:10.1063/1.4952748.
Beiersdorfer, P., Magee, E. W., Brown, G. V., Chen, H., Emig, J., Hell, N., Bitter, M., Hill, K. W., Allan, P., Brown, C. R. D., Hill, M. P., Hoarty, D. J., Hobbs, L. M. R., & James, S. F. Lineshape spectroscopy with a very high resolution, very high signal-to-noise crystal spectrometer. United States. https://doi.org/10.1063/1.4952748
Beiersdorfer, P., Magee, E. W., Brown, G. V., Chen, H., Emig, J., Hell, N., Bitter, M., Hill, K. W., Allan, P., Brown, C. R. D., Hill, M. P., Hoarty, D. J., Hobbs, L. M. R., and James, S. F. 2016. "Lineshape spectroscopy with a very high resolution, very high signal-to-noise crystal spectrometer". United States. https://doi.org/10.1063/1.4952748. https://www.osti.gov/servlets/purl/1411695.
@article{osti_1411695,
title = {Lineshape spectroscopy with a very high resolution, very high signal-to-noise crystal spectrometer},
author = {Beiersdorfer, P. and Magee, E. W. and Brown, G. V. and Chen, H. and Emig, J. and Hell, N. and Bitter, M. and Hill, K. W. and Allan, P. and Brown, C. R. D. and Hill, M. P. and Hoarty, D. J. and Hobbs, L. M. R. and James, S. F.},
abstractNote = {Here, we have developed a high-resolution x-ray spectrometer for measuring the shapes of spectral lines produced from laser-irradiated targets on the Orion laser facility. The instrument utilizes a spherically bent crystal geometry to spatially focus and spectrally analyze photons from foil or microdot targets. The high photon collection efficiency resulting from its imaging properties allows the instrument to be mounted outside the Orion chamber, where it is far less sensitive to particles, hard x-rays, or electromagnetic pulses than instruments housed close to the target chamber center in ten-inch manipulators. Moreover, Bragg angles above 50° are possible, which provide greatly improved spectral resolution compared to radially viewing, near grazing-incidence crystal spectrometers. These properties make the new instrument an ideal lineshape diagnostic for determining plasma temperature and density. We describe its calibration on the Livermore electron beam ion trap facility and present spectral data of the K-shell emission from highly charged sulfur produced by long-pulse as well as short-pulse beams on the Orion laser in the United Kingdom.},
doi = {10.1063/1.4952748},
url = {https://www.osti.gov/biblio/1411695}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 6,
volume = 87,
place = {United States},
year = {Mon Jun 06 00:00:00 EDT 2016},
month = {Mon Jun 06 00:00:00 EDT 2016}
}

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Cited by: 18 works
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  • Pikuz, Tatiana A.; Faenov, Anatoly Y.; Magunov, A. I.
  • International Symposium on Optical Science and Technology, SPIE Proceedings
  • https://doi.org/10.1117/12.448469

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Works referencing / citing this record:

Lineshape measurements of He- β spectra on the ORION laser facility
journal, October 2016


High resolution, high signal-to-noise crystal spectrometer for measurements of line shifts in high-density plasmas
journal, October 2018


Experimental comparison of spherically bent HAPG and Ge crystals
journal, October 2018


Observation of He-like Satellite Lines of the H-like Potassium K xix Emission
journal, August 2019