Effect of accumulation on the formation of multiply charged ions in solids under grazing incidence of multiple laser radiation

Bedilov, M. R.; Bedilov, R. M.; Matnazarov, A. R.; Sabitov, M. M.; Kamalova, Zh. O.
September 2006
Physics of the Solid State;Sep2006, Vol. 48 Issue 9, p1629
Academic Journal
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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