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Title: Measurements of continuum lowering in solid-density plasmas created from elements and compounds

Abstract

The effect of a dense plasma environment on the energy levels of an embedded ion is usually described in terms of the lowering of its continuum level. For strongly coupled plasmas, the phenomenon is intimately related to the equation of state; hence, an accurate treatment is crucial for most astrophysical and inertial-fusion applications, where the case of plasma mixtures is of particular interest. In this study, we present an experiment showing that the standard density-dependent analytical models are inadequate to describe solid-density plasmas at the temperatures studied, where the reduction of the binding energies for a given species is unaffected by the different plasma environment (ion density) in either the element or compounds of that species, and can be accurately estimated by calculations only involving the energy levels of an isolated neutral atom. Lastly, the results have implications for the standard approaches to the equation of state calculations.

Authors:
 [1];  [1];  [2];  [1];  [1];  [3];  [3];  [4];  [5];  [6];  [7];  [3];  [6];  [6];  [3];  [6];  [8];  [9];  [6];  [10] more »;  [1] « less
  1. Univ. of Oxford (United Kingdom)
  2. UC Berkeley, LeConte Hall, Berkeley, California (United States)
  3. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics
  4. Institute for Basic Science (IBS), Gwangju (Korea); Gwangju Inst. of Science and Technology (Korea, Republic of)
  5. Atomic and Molecular Data Unit, Nuclear Data Section, Vienna (Austria)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  8. Univ. of California, Berkeley, CA (United States)
  9. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States); Friedrich Schiller Univ., Jena (Germany)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1272408
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Ciricosta, O., Vinko, S. M., Barbrel, B., Rackstraw, D. S., Preston, T. R., Burian, T., Chalupský, J., Cho, B. I., Chung, H. -K., Dakovski, G. L., Engelhorn, K., Hájková, V., Heimann, P., Holmes, M., Juha, L., Krzywinski, J., Lee, R. W., Toleikis, S., Turner, J. J., Zastrau, U., and Wark, J. S. Measurements of continuum lowering in solid-density plasmas created from elements and compounds. United States: N. p., 2016. Web. doi:10.1038/ncomms11713.
Ciricosta, O., Vinko, S. M., Barbrel, B., Rackstraw, D. S., Preston, T. R., Burian, T., Chalupský, J., Cho, B. I., Chung, H. -K., Dakovski, G. L., Engelhorn, K., Hájková, V., Heimann, P., Holmes, M., Juha, L., Krzywinski, J., Lee, R. W., Toleikis, S., Turner, J. J., Zastrau, U., & Wark, J. S. Measurements of continuum lowering in solid-density plasmas created from elements and compounds. United States. doi:10.1038/ncomms11713.
Ciricosta, O., Vinko, S. M., Barbrel, B., Rackstraw, D. S., Preston, T. R., Burian, T., Chalupský, J., Cho, B. I., Chung, H. -K., Dakovski, G. L., Engelhorn, K., Hájková, V., Heimann, P., Holmes, M., Juha, L., Krzywinski, J., Lee, R. W., Toleikis, S., Turner, J. J., Zastrau, U., and Wark, J. S. Mon . "Measurements of continuum lowering in solid-density plasmas created from elements and compounds". United States. doi:10.1038/ncomms11713. https://www.osti.gov/servlets/purl/1272408.
@article{osti_1272408,
title = {Measurements of continuum lowering in solid-density plasmas created from elements and compounds},
author = {Ciricosta, O. and Vinko, S. M. and Barbrel, B. and Rackstraw, D. S. and Preston, T. R. and Burian, T. and Chalupský, J. and Cho, B. I. and Chung, H. -K. and Dakovski, G. L. and Engelhorn, K. and Hájková, V. and Heimann, P. and Holmes, M. and Juha, L. and Krzywinski, J. and Lee, R. W. and Toleikis, S. and Turner, J. J. and Zastrau, U. and Wark, J. S.},
abstractNote = {The effect of a dense plasma environment on the energy levels of an embedded ion is usually described in terms of the lowering of its continuum level. For strongly coupled plasmas, the phenomenon is intimately related to the equation of state; hence, an accurate treatment is crucial for most astrophysical and inertial-fusion applications, where the case of plasma mixtures is of particular interest. In this study, we present an experiment showing that the standard density-dependent analytical models are inadequate to describe solid-density plasmas at the temperatures studied, where the reduction of the binding energies for a given species is unaffected by the different plasma environment (ion density) in either the element or compounds of that species, and can be accurately estimated by calculations only involving the energy levels of an isolated neutral atom. Lastly, the results have implications for the standard approaches to the equation of state calculations.},
doi = {10.1038/ncomms11713},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {2016},
month = {5}
}

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    Works referencing / citing this record:

    Measurements of continuum lowering in solid-density plasmas created from elements and compounds
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    Ionization dynamics of dense matter generated by intense ultrashort X-ray pulses
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