Advertisement

Simulation of radiative properties of substances used as soft X-ray source materials for an X pinch

  • O. B. Denisov
  • N. Yu. Orlov
Article
  • 25 Downloads

Abstract

This article presents the results of theoretical and experimental studies of the radiative properties of materials that can serve as sources of soft X-ray radiation in an X pinch. The important features of the theoretical model used to compute the radiation characteristics of the plasma with a complex chemical compound are discussed. It is shown that the yield of X-ray radiation can be increased by changing the chemical composition of the radiation source material. Theoretical results are compared with the data from experiments on measuring the total yield of X-pinch radiation where two types of wires are used: from NiCr and from Alloy 188, respectively. The physical processes in the symmetrical multilayer X pinch with the use of wires of tungsten and molybdenum are analyzed. A possible theoretical explanation of the physical effects observed in the experiment is discussed on the basis of the radiation spectra and of the W and Mo absorption and of their Rosseland and Planck paths.

Keywords

radiative properties of materials Planck and Rosseland paths 

References

  1. 1.
    R. Feyman, N. Metropolis, and E. Teller, “Equations of State of Elements Based on the Generalized Fermi-Thomas theory,”Phys. Rev. 75, 73–79 (1949).Google Scholar
  2. 2.
    B. F. Rozsnayai, “Relativistic Hartree-Fock-Slater Calculations for Arbitrary Temperature and Matter Density,”Phys. Rev. 5A(3), 1137–1149 (1972).Google Scholar
  3. 3.
    A. F. Nikiforov and V. B. Uvarov, “Description of the Matter State in the Range of High Temperature Ranges Based on Self-Congruent Field Equations,” Numerical Methods of Continuum Mechanics 4, 114–117 (1973) [in Russian].Google Scholar
  4. 4.
    B. F. Rozsnyai, “An Overview of the Problems Connected with Theoretical Calculations for Hot Plasmas,” J.Quant. Spectrosc. Radiat. Transfer 27(3), 211–217 (1982).CrossRefGoogle Scholar
  5. 5.
    N. Yu. Orlov, “Ion Model of a Hot Dense Plasma,” Laser and Particle Beams 15, 627–634 (1997).CrossRefGoogle Scholar
  6. 6.
    N. Yu. Orlov and V. E. Fortov, “Comparative Analysis of Theoretical Models of Dense High-Temperature Plasma and Method of Density Functional,” Fizika plazmy 27(1), 45–57 (2001).Google Scholar
  7. 7.
    N. Yu. Orlov, “Quantum-Statistical Calculation of the Properties of Chemical Element Mixture with Account of Fluctuations in Occupation Numbers of Electronic States,” ZhVM i MF 27, 1058–1067 (1987).MATHGoogle Scholar
  8. 8.
    N. Yu. Orlov, “Calculation of the Radiative Opacity of a Hot Dense Plasma,” Contributions to Plasma Physics 39, 177–180 (1999).CrossRefGoogle Scholar
  9. 9.
    O. B. Denisov, N. Yu. Orlov, S. Yu. Gus’kov, et al., “Simulation of Composition of Materials for Sources of Soft X-Ray Radiation Used in Studies on Inertial Thermonuclear Synthesis,” Fizika plazmy 31(8), 742–748 (2005).Google Scholar
  10. 10.
    T. A. Shelkovenko, S. A. Pikuz, R. D. MacBride, et al., “Symmetrical Maltilayer X-Pinch with Megampere Current,” Fizika plazmy 36(1), 1–18 (2010).Google Scholar
  11. 11.
    N. Yu. Orlov, S. Yu. Guskov, S. A. Pikuz, V. B. Rozanov, et al., “Theoretical and Experimental Studies of the Radiative Properties of Hot Dense Matter for Optimizing Soft X-Ray Sources,” Laser and Particle Beams 25, 1–9 (2007).CrossRefGoogle Scholar
  12. 12.
    Ya. B. Zel’dovich and Yu. P. Raizer, Phisics of Shock Waves and High Temperature Hydrodynamic Phenomena (Nauka, Moscow, 1966) [in Russian].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  1. 1.Joint Institute of High TemperaturesRussian Academy of SciencesMoscowRussia

Personalised recommendations