Effect of accumulation on the formation of multiply charged ions in solids under grazing incidence of multiple laser radiation |
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Authors: | M. R. Bedilov R. M. Bedilov A. R. Matnazarov M. M. Sabitov Zh. O. Kamalova |
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Affiliation: | (1) Research Institute of Applied Physics, National University of Uzbekistan, Tashkent, 700174, Uzbekistan |
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Abstract: | The effect of accumulation on the formation of multiply charged ions in optically opaque solids as a function of the number and the angle of incidence of laser pulses is investigated by mass spectrometry. It is revealed that the accumulation effect manifests itself at prethreshold power densities q = 108–109 W/cm2 irrespective of the angle of incidence of laser radiation α = 18°–85° and at subthreshold power densities q > 1010 W/cm2 in the case of grazing incidence of laser radiation at an angle α = 85°. The accumulation effect brings about an increase in the maximum charge multiplicity Z max of tungsten ions and a decrease in the number of impurity ions and in their intensity. No accumulation effect is observed at subthreshold power densities when laser radiation is incident at an angle α = 18°. |
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