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Title: Observations of strong ion-ion correlations in dense plasmas

Abstract

Using simultaneous spectrally, angularly, and temporally resolved x-ray scattering, we measure the pronounced ion-ion correlation peak in a strongly coupled plasma. Laser-driven shock-compressed aluminum at ~3× solid density is probed with high-energy photons at 17.9 keV created by molybdenum He-α emission in a laser-driven plasma source. The measured elastic scattering feature shows a well-pronounced correlation peak at a wave vector of k=4Å–1. The magnitude of this correlation peak cannot be described by standard plasma theories employing a linear screened Coulomb potential. Advanced models, including a strong short-range repulsion due to the inner structure of the aluminum ions are however in good agreement with the scattering data. These studies have demonstrated a new highly accurate diagnostic technique to directly measure the state of compression and the ion-ion correlations. Furthermore, we have since applied this new method in single-shot wave-number resolved S(k) measurements to characterize the physical properties of dense plasmas.

Authors:
 [1];  [2];  [1];  [3];  [4];  [5];  [2];  [6];  [7];  [2];  [1];  [1];  [2];  [2];  [8];  [1];  [9];  [7];  [10];  [11] more »;  [2];  [1] « less
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. AWE plc, Reading (United Kingdom); Univ. of Warwick, Coventry (United Kingdom)
  4. Univ. of California, Berkeley, CA (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Los Angeles, CA (United States)
  6. Univ. of Warwick, Coventry (United Kingdom)
  7. Univ. of Oxford, Oxford (United Kingdom)
  8. GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  9. Max Planck Institut fur Physik komplexer Systeme, Dresden (Germany)
  10. Tessella, 26 The Quadrant, Abington (United Kingdom)
  11. SLAC National Accelerator Lab., Menlo Park, CA (United States); Friedrich-Schiller-Univ., Jena (Germany)
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1334521
Grant/Contract Number:  
NA0000910
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 21; Journal Issue: 5; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; x-ray scattering; aluminum; elasticity; scattering measurements; molybdenum

Citation Formats

Ma, T., Fletcher, L., Pak, A., Chapman, D. A., Falcone, R. W., Fortmann, C., Galtier, E., Gericke, D. O., Gregori, G., Hastings, J., Landen, O. L., Le Pape, S., Lee, H. J., Nagler, B., Neumayer, P., Turnbull, D., Vorberger, J., White, T. G., Wunsch, K., Zastrau, U., Glenzer, S. H., and Doppner, T. Observations of strong ion-ion correlations in dense plasmas. United States: N. p., 2014. Web. doi:10.1063/1.4872161.
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Ma, T., Fletcher, L., Pak, A., Chapman, D. A., Falcone, R. W., Fortmann, C., Galtier, E., Gericke, D. O., Gregori, G., Hastings, J., Landen, O. L., Le Pape, S., Lee, H. J., Nagler, B., Neumayer, P., Turnbull, D., Vorberger, J., White, T. G., Wunsch, K., Zastrau, U., Glenzer, S. H., & Doppner, T. Observations of strong ion-ion correlations in dense plasmas. United States. https://doi.org/10.1063/1.4872161
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Ma, T., Fletcher, L., Pak, A., Chapman, D. A., Falcone, R. W., Fortmann, C., Galtier, E., Gericke, D. O., Gregori, G., Hastings, J., Landen, O. L., Le Pape, S., Lee, H. J., Nagler, B., Neumayer, P., Turnbull, D., Vorberger, J., White, T. G., Wunsch, K., Zastrau, U., Glenzer, S. H., and Doppner, T. Thu . "Observations of strong ion-ion correlations in dense plasmas". United States. https://doi.org/10.1063/1.4872161. https://www.osti.gov/servlets/purl/1334521.
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@article{osti_1334521,
title = {Observations of strong ion-ion correlations in dense plasmas},
author = {Ma, T. and Fletcher, L. and Pak, A. and Chapman, D. A. and Falcone, R. W. and Fortmann, C. and Galtier, E. and Gericke, D. O. and Gregori, G. and Hastings, J. and Landen, O. L. and Le Pape, S. and Lee, H. J. and Nagler, B. and Neumayer, P. and Turnbull, D. and Vorberger, J. and White, T. G. and Wunsch, K. and Zastrau, U. and Glenzer, S. H. and Doppner, T.},
abstractNote = {Using simultaneous spectrally, angularly, and temporally resolved x-ray scattering, we measure the pronounced ion-ion correlation peak in a strongly coupled plasma. Laser-driven shock-compressed aluminum at ~3× solid density is probed with high-energy photons at 17.9 keV created by molybdenum He-α emission in a laser-driven plasma source. The measured elastic scattering feature shows a well-pronounced correlation peak at a wave vector of k=4Å–1. The magnitude of this correlation peak cannot be described by standard plasma theories employing a linear screened Coulomb potential. Advanced models, including a strong short-range repulsion due to the inner structure of the aluminum ions are however in good agreement with the scattering data. These studies have demonstrated a new highly accurate diagnostic technique to directly measure the state of compression and the ion-ion correlations. Furthermore, we have since applied this new method in single-shot wave-number resolved S(k) measurements to characterize the physical properties of dense plasmas.},
doi = {10.1063/1.4872161},
journal = {Physics of Plasmas},
number = 5,
volume = 21,
place = {United States},
year = {Thu Apr 24 00:00:00 EDT 2014},
month = {Thu Apr 24 00:00:00 EDT 2014}
}
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https://doi.org/10.1063/1.4872161
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Works referenced in this record:

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    • Faussurier, Gérald; Blancard, Christophe
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    Measurement of ionic structure in isochorically heated graphite from X-ray Thomson scattering
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    • Lv, Min; Hu, Zhimin; Hou, Yong
    • Physics of Plasmas, Vol. 26, Issue 2
    • DOI: 10.1063/1.5054088
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