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Title: Temperature sensitivity of Cu K{sub {alpha}} imaging efficiency using a spherical Bragg reflecting crystal

Abstract

The interaction of a 75 J 10 ps, high intensity laser beam with low-mass, solid Cu targets is investigated. Two instruments were fielded as diagnostics of Cu K-shell emission from the targets: a single photon counting spectrometer provided the absolute K{sub {alpha}} yield [C. Stoeckl et al., Rev. Sci. Instrum. 75, 3705 (2004)] and a spherically bent Bragg crystal recorded 2D monochromatic images with a spatial resolution of 10 {mu}m [J. A. Koch et al., Rev. Sci. Instrum. 74, 2130 (2003)]. Due to the shifting and broadening of the K{sub {alpha}} spectral lines with increasing temperature, there is a temperature dependence of the crystal collection efficiency. This affects measurements of the spatial pattern of electron transport, and it provides a temperature diagnostic when cross calibrated against the single photon counting spectrometer. The experimental data showing changing collection efficiency are presented. The results are discussed in light of modeling of the temperature-dependent spectrum of Cu K-shell emission.

Authors:
 [1];  [2]; ; ; ; ; ; ; ;  [1];  [3];  [2]; ; ;  [4]; ;  [1];  [2];  [5];  [6] more »; ;  [7];  [8] « less
  1. Lawrence Livermore National Laboratory, Livermore, California 94550-9234 (United States)
  2. (United States)
  3. Ohio State University, Columbus, Ohio 43210 (United States)
  4. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom)
  5. Czech Technical University, Prague (Czech Republic)
  6. General Atomics, San Diego, California 92186 (United States)
  7. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
  8. Department of Applied Sciences, University of California, Davis, Davis, California 95616 (United States)
Publication Date:
OSTI Identifier:
20974845
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 2; Other Information: DOI: 10.1063/1.2431632; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COPPER; CRYSTALS; EFFICIENCY; ELECTRON TEMPERATURE; ELECTRONS; EMISSION; ION TEMPERATURE; K SHELL; LASERS; LINE BROADENING; MONOCHROMATIC RADIATION; PHOTONS; PLASMA DIAGNOSTICS; SENSITIVITY; SPATIAL RESOLUTION; SPECTROMETERS; SPHERICAL CONFIGURATION; TEMPERATURE DEPENDENCE

Citation Formats

Akli, K. U., Ohio State University, Columbus, Ohio 43210, Key, M. H., Chung, H. K., Hansen, S. B., Chen, M. H., Hatchett, S., Izumi, N., Mackinnon, A. J., Snavely, R., Freeman, R. R., Department of Applied Sciences, University of California, Davis, Davis, California 95616, Gregori, G., Norreys, P., Murphy, C. D., Hey, D., King, J., Department of Applied Sciences, University of California, Davis, Davis, California 95616, Kuba, J., Stephens, R. B., Stoeckel, C., Theobald, W., and Zhang, B.. Temperature sensitivity of Cu K{sub {alpha}} imaging efficiency using a spherical Bragg reflecting crystal. United States: N. p., 2007. Web. doi:10.1063/1.2431632.
Akli, K. U., Ohio State University, Columbus, Ohio 43210, Key, M. H., Chung, H. K., Hansen, S. B., Chen, M. H., Hatchett, S., Izumi, N., Mackinnon, A. J., Snavely, R., Freeman, R. R., Department of Applied Sciences, University of California, Davis, Davis, California 95616, Gregori, G., Norreys, P., Murphy, C. D., Hey, D., King, J., Department of Applied Sciences, University of California, Davis, Davis, California 95616, Kuba, J., Stephens, R. B., Stoeckel, C., Theobald, W., & Zhang, B.. Temperature sensitivity of Cu K{sub {alpha}} imaging efficiency using a spherical Bragg reflecting crystal. United States. doi:10.1063/1.2431632.
Akli, K. U., Ohio State University, Columbus, Ohio 43210, Key, M. H., Chung, H. K., Hansen, S. B., Chen, M. H., Hatchett, S., Izumi, N., Mackinnon, A. J., Snavely, R., Freeman, R. R., Department of Applied Sciences, University of California, Davis, Davis, California 95616, Gregori, G., Norreys, P., Murphy, C. D., Hey, D., King, J., Department of Applied Sciences, University of California, Davis, Davis, California 95616, Kuba, J., Stephens, R. B., Stoeckel, C., Theobald, W., and Zhang, B.. Thu . "Temperature sensitivity of Cu K{sub {alpha}} imaging efficiency using a spherical Bragg reflecting crystal". United States. doi:10.1063/1.2431632.
@article{osti_20974845,
title = {Temperature sensitivity of Cu K{sub {alpha}} imaging efficiency using a spherical Bragg reflecting crystal},
author = {Akli, K. U. and Ohio State University, Columbus, Ohio 43210 and Key, M. H. and Chung, H. K. and Hansen, S. B. and Chen, M. H. and Hatchett, S. and Izumi, N. and Mackinnon, A. J. and Snavely, R. and Freeman, R. R. and Department of Applied Sciences, University of California, Davis, Davis, California 95616 and Gregori, G. and Norreys, P. and Murphy, C. D. and Hey, D. and King, J. and Department of Applied Sciences, University of California, Davis, Davis, California 95616 and Kuba, J. and Stephens, R. B. and Stoeckel, C. and Theobald, W. and Zhang, B.},
abstractNote = {The interaction of a 75 J 10 ps, high intensity laser beam with low-mass, solid Cu targets is investigated. Two instruments were fielded as diagnostics of Cu K-shell emission from the targets: a single photon counting spectrometer provided the absolute K{sub {alpha}} yield [C. Stoeckl et al., Rev. Sci. Instrum. 75, 3705 (2004)] and a spherically bent Bragg crystal recorded 2D monochromatic images with a spatial resolution of 10 {mu}m [J. A. Koch et al., Rev. Sci. Instrum. 74, 2130 (2003)]. Due to the shifting and broadening of the K{sub {alpha}} spectral lines with increasing temperature, there is a temperature dependence of the crystal collection efficiency. This affects measurements of the spatial pattern of electron transport, and it provides a temperature diagnostic when cross calibrated against the single photon counting spectrometer. The experimental data showing changing collection efficiency are presented. The results are discussed in light of modeling of the temperature-dependent spectrum of Cu K-shell emission.},
doi = {10.1063/1.2431632},
journal = {Physics of Plasmas},
number = 2,
volume = 14,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}