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Iodine laser production of highly charged Ta ions

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Czechoslovak Journal of Physics Aims and scope

Abstract

The results of systematic studies of multiply charged Ta ion production with the fundamental frequency of an iodine laser (λ=1.315μm), and its 2nd (0.657μm) and 3rd (0.438μm) harmonics are summarized and discussed. Short laser pulse (350 ps) and a focus spot diameter of 100μm allowed for the laser power densities in the range of 5×1013–1.5×1015 W/cm2. Corpuscular diagnostics were based on time-of-flight methods; two types of ion collectors and a cylindrical electrostatic ion energy analyzer were used. The Ta ions with charge state up to 55+ were registered in the distance of 210 cm; the maximum amplitude of the signal of a high energy ion group was found to belong to the ions with the charge state around 43+, depending on the laser power density. The ion energy distribution was measured for all three wavelengths, however, in a different energy range; the maximum registered ion energy was 8.8 MeV. The occurrence of highly charged ions in the far expansion zone is discussed in view of the mechanism of charge distribution “freezing” during two-temperature isothermal plasma expansion.

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Author notes

  1. J. Farny

    Present address: , Meranierring 28/7, 95445, Bayreuth, Germany

Authors and Affiliations

  1. Institute of Physics, Acad. Sci. of the Czech Rep., Na Slovance 2, 180 40, Praha 8, Czech Republic

    L. Láska, J. Krása, K. Mašek, M. Pfeifer, B. Králiková, T. Mocek, J. Skála, P. Straka, P. Trenda & K. Rohlena

  2. Institute of Plasma Physics and Laser Microfusion, P.O.Box 49, 00-908, Warsaw, Poland

    E. Woryna, J. Farny, P. Parys & J. Wołowski

  3. Institute of Optoelectronics, MUT, 01-489, Warsaw, Poland

    W. Mróz

  4. Institute of Theoretical and Experimental Physics, 117259, Moscow, Russia

    A. Shumshurov & B. Sharkov

  5. PS-Division, CERN, 1211, Geneva 23, Switzerland

    J. Collier, K. Langbein & H. Haseroth

Authors
  1. L. Láska
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  2. J. Krása
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  3. K. Mašek
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  4. M. Pfeifer
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  5. B. Králiková
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  6. T. Mocek
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  7. J. Skála
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  8. P. Straka
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  9. P. Trenda
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  10. K. Rohlena
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  11. E. Woryna
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  12. J. Farny
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  13. P. Parys
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  14. J. Wołowski
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  15. W. Mróz
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  16. A. Shumshurov
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  18. J. Collier
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  19. K. Langbein
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  20. H. Haseroth
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Additional information

The work was performed in a partial fulfillment of the research grant project No. A1010525 sponsored by the Academy of Sciences of the Czech Republic and grant project No. 202/95/0039 sponsored by the Grant Agency of the Czech Republic.

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Láska, L., Krása, J., Mašek, K. et al. Iodine laser production of highly charged Ta ions. Czech J Phys 46, 1099–1115 (1996). https://doi.org/10.1007/BF01690039

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  • DOI: https://doi.org/10.1007/BF01690039

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