Skip to main content

Analysis of characteristic X-ray generation induced by laser plasma electrons accelerated by an electric field

Abstract

The results of experiments devoted to the study of spectral, spatial, and time characteristics of a spectrally bright point x-ray source based on a vacuum diode with a laser-plasma cathode and a titanium needle anode with a photon energy approximately equal to 4.5 keV are presented. The experimental results revealed a considerable difference between the electron emission from laser plasma in a strong electric field and the explosive electron emission and demonstrated the effectiveness of laser plasma as an electron source. The optimization of the laser radiation power density, the accelerating voltage, and the interelectrode spacing made it possible to create a point x-ray source whose spectral brightness exceeds available sources in the class of small-size pulse x-ray instruments (tubes with explosive cathodes). It has been proved experimentally that the maximum contrast of the characteristic lines of the anode material is attained in the case of an optimal choice of accelerating voltage. The x-ray source has the following parameters: (1) spectral brightness of the K-lines of titanium of the order of 1021 photons/cm2 s sr keV; (2) emitting region size of 250 mm; and (3) laser pulse duration less than 20 ns.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    M. V. Dmitriev, Yu. A. Zakharenkov, and A. S. Shikanov, Preprint No. 91, Fiz. Inst. Akad. Nauk SSSR (Lebedev Institute of Physics, Academy of Sciences of USSR, 1989).

    Google Scholar 

  2. 2.

    Yu. V. Korobkin, V. B. Rozanov, A. S. Shikanov, and G. A. Vergunova, Preprint No. 27, Fiz. Inst. Ross. Akad. Nauk (Lebedev Institute of Physics, Russian Academy of Sciences, 1995).

    Google Scholar 

  3. 3.

    Yu. V. Korobkin, V. B. Rozanov, A. S. Shikanov, and G. A. Vergunova, J. Russ. Laser Res. 19, 101 (1998).

    Google Scholar 

  4. 4.

    Yu. V. Korobkin, I. V. Romanov, A. A. Rupasov, et al., Phys. Scr. 60, 76 (1999).

    ADS  Google Scholar 

  5. 5.

    I. B. Borovskii, Physical Foundations of X-ray Spectral Investigations (Nauka, Moscow, 1956).

    Google Scholar 

  6. 6.

    B. L. Henke and M. A. Tesler, in Advances in X-ray Analysis (Plenum, New York, 1975), Vol. 18.

    Google Scholar 

  7. 7.

    P. Mora, Phys. Fluids 25, 1051 (1982).

    Article  ADS  MATH  Google Scholar 

  8. 8.

    Yu. V. Afanas’ev, N. G. Basov, O. N. Krokhin, et al., Itogi Nauki Tekh., Radiotekh. 17, 156 (1978).

    Google Scholar 

  9. 9.

    G. A. Mesyats and D. I. Proskurovskii, Pulse Electric Discharge in Vacuum (Nauka, Novosibirsk, 1984).

    Google Scholar 

  10. 10.

    A. V. Bolotov, A. V. Kozyrev, A. V. Kolesnikov, et al., Zh. Tekh. Fiz. 61(1), 40 (1991) [Sov. Phys. Tech. Phys. 36, 23 (1991)].

    Google Scholar 

  11. 11.

    F. Chen, Introduction to Plasma Physics (Plenum, New York, 1984; Mir, Moscow, 1987).

    Google Scholar 

  12. 12.

    Physical Quantities. Handbook, Ed. by I. S. Grigor’ev and E. Z. Melikhov (Énergoatomizdat, Moscow, 1991).

    Google Scholar 

  13. 13.

    J. Kirz, O. T. Attwood, B. L. Henke, et al., X-ray Data Booklet (Lawrence Berkley Laboratory, University of California at Berkley, 1986), PUB-490 Rev.

    Google Scholar 

Download references

Author information

Affiliations

Authors

Additional information

__________

Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 119, No. 6, 2001, pp. 1151–1158.

Original Russian Text Copyright © 2001 by Erokhin, Kishinets, Korobkin, Romanov, Romanova, Rupasov, Shikanov.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Erokhin, A.A., Kishinets, A.S., Korobkin, Y.V. et al. Analysis of characteristic X-ray generation induced by laser plasma electrons accelerated by an electric field. J. Exp. Theor. Phys. 92, 998–1003 (2001). https://doi.org/10.1134/1.1385640

Download citation

Keywords

  • Electron Emission
  • Laser Plasma
  • Bright Point
  • Laser Pulse Duration
  • Laser Radiation Power