Czechoslovak Journal of Physics

, Volume 56, Supplement 2, pp B280–B290 | Cite as

X-ray lasing in ablative capillary discharges

  • H. J. Kunze
  • S. S. Ellwi
  • Ž. Andreić


In this presentation we summarize the results on lasing in the soft X-ray region as obtained with ablative capillary discharges at the Ruhr-University of Bochum. During the first half-cycle of the discharge the initial plasma is obtained from ablated wall material (polyacetal); in the second half-cycle a chain of hot plasma spots is produced in the neck regions of a m = 0 instability. Fully stripped carbon ions stream into the cold plasma outside the necks, and charge exchange with CIII ions results in population inversion between the n = 3 and n = 2 levels of CVI and thus in lasing at 18.22 nm. Modulation of the inner wall or of the return conductor influences the wavelength of the instability and via the number of inversion layers also the lasing spike. Its duration is measured to about 400 ps. The relevant charge exchange processes are also demonstrated with colliding laser produced plasmas.

Key words

capillary plasma discharge soft X-ray laser 


  1. [1]
    D. L. Matthews, et al.: Phys. Rev. Lett. 54 (1985) 110.CrossRefADSGoogle Scholar
  2. [2]
    S. Suckewer, C. H. Skinner, H. Milchberg, C. Keanne and D. Voorhees: Phys. Rev. Lett. 55 (1985) 1753.CrossRefADSGoogle Scholar
  3. [3]
    J. Zhang: X-Ray Lasers 2004, Proc. 9th International Conference on X-Ray Lasers, Bejing 2004, Inst. Phys. Conf. Series 186, Bristol 2005.Google Scholar
  4. [4]
    H. Daido: Rep. Prog. Phys. 65 (2002) 1513.CrossRefADSGoogle Scholar
  5. [5]
    J. J. Rocca, V. Shlyapsev, F. G. Tomasel, O. D. Cortazar, D. Hartshorn, J. L. A. Chilla: Phys. Rev. Lett. 73 (1994) 2192.CrossRefADSGoogle Scholar
  6. [6]
    J. Rocca, D. P. Clark, J. L. A. Chilla, V. N. Shlyapsev: Phys. Rev. Lett. 77 (1996) 1476.CrossRefADSGoogle Scholar
  7. [7]
    C. H. Moreno, M. C. Marconi, K. Kanizay, J. J. Rocca, Yu. A. Uspenskii, A. V. Vinogradov, Yu. A. Pershin: Phys. Rev. E 60 (1999) (1999).Google Scholar
  8. [8]
    G. Tomassetti, A. Ritucci, A. Reale, L. Palladino, S. V. Kukhlevsky, F. Flora, L. Mezi, A. Faenov, T. Pikuz, A. Gaudieri: Opt. Comm. 231 (2004) 403CrossRefADSGoogle Scholar
  9. [9]
    M. Shuker, A. Ben-kish, R. A. Nemirovsky, A. Fisher, A. Ron: Phys. Plasmas 13 (2006) 013102-1.Google Scholar
  10. [10]
    G. Niimi, Y. Hayashi, M. Nakajima, M. Watanabe, A. Okino, K. Horioka, E. Hotta: J. Phys. D: Appl. Phys. 34 (2001) 2123.CrossRefADSGoogle Scholar
  11. [11]
    H. J. Shin, D. E. Kim, T. N. Lee: Phys. Rev. E 50 (1994) 1376.CrossRefADSGoogle Scholar
  12. [12]
    C. Steden and H.-J. Kunze: Phys. Lett. A 151 (1990) 534.CrossRefADSGoogle Scholar
  13. [13]
    M. Vrbova, A. Jancarek, P. Vrba, A. Fojtik, L. Scholzova, R. Havlikova, S. Palinek: in [3], p. 179.Google Scholar
  14. [14]
    R. H. Dixon, R. C. Elton: Phys. Rev. Lett. 77 (1977) 1072.CrossRefADSGoogle Scholar
  15. [15]
    R. C. Elton: X-Ray Lasers, Academic Press, Boston 1990.Google Scholar
  16. [16]
    H.-J. Kunze, KN. Koshelev, C. Steden, D. Uskov, H. T. Wieschebrink: Phys. Lett. A 193 (1994) 183.CrossRefADSGoogle Scholar
  17. [17]
    L. Aschke, Yu. V. Ralchenko, E. A. Solov’ev, H.-J. Kunze: J. Phys. IV France 11 (2001) Pr2-547.Google Scholar
  18. [18]
    F. Ruhl, L. Aschke, H.-J. Kunze: Phys. Lett. A 225 (1997) 107.CrossRefADSGoogle Scholar
  19. [19]
    P. Bogen, H. Conrads, G. Gatti, W. Kohlhaas: J. Opt. Soc. Am. 58 (1968) 203.CrossRefADSGoogle Scholar
  20. [20]
    S. Ellwi, S. Ferri, L. Juschkin, H.-J. Kunze, Ž. Andreić, K. Koshelev: Nukleonika 46 (2001) 1.Google Scholar
  21. [21]
    S. S. Ellwi, L. Juschkin, S. Ferri, H.-J. Kunze, K. N. Koshelev, E. Louis: J. Phys. D: Appl. Phys. 34 (2001) 336.CrossRefADSGoogle Scholar
  22. [22]
    S. S. Ellwi, Ž. Andreić, S. Pleslić, H.-J. Kunze: Phys. Lett. A 292 (2001) 125.CrossRefADSGoogle Scholar
  23. [23]
    H.-J. Kunze, S. S. Ellwi, Ž. Andreić: Phys. Lett. A 334 (2005) 37.CrossRefADSMATHGoogle Scholar

Copyright information

© Institute of Physics, Academy of Sciences of Czech Republic 2006

Authors and Affiliations

  • H. J. Kunze
    • 1
  • S. S. Ellwi
    • 2
  • Ž. Andreić
    • 3
  1. 1.Institute for Experimental PhysicsRuhr-University BochumBochumGermany
  2. 2.Powerlase LtdImperial House, Link 10, Napier Way, CrawleyUK
  3. 3.Faculty of Mining, Geology, and Petroleum EngineeringUniversity of ZagrebPijerottijeva 6Croatia

Personalised recommendations