Charge and Energy Spectra of Fast Multicharged Ions
in a Laser Plasma

M. R. Bedilov, I. Yu. Davletov, and Sh. D. Sultanov

Ulugbek National University of Uzbekistan, Tashkent, 700095 Uzbekistan

Received May 20, 2001; in final form, March 15, 2002

Abstract—In measuring the charge and energy spectra of the ions of a single-element laser plasma, in addition
to thermal ions, fast multicharged ions are recorded that are accelerated by the electric field of laser radiation
in the region of the critical plasma density. The charge and energy spectra of Co ions with the charge numbers
z = 1–3 are measured at laser intensities of q = 510¹¹10¹² W/cm². The energy spectra of these ions are broad
and are located on the high-energy side (z_max = 3, E > 5.0 keV) with respect to the thermal ions (z_max = 9, E <
4.0 keV). The increase in q to 10¹⁴ W/cm² results in an increase in the charge number of both thermal and fast
ions. © 2002 MAIK “Nauka/Interperiodica”.

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