On efficiency of UV wide-band source on transitions of Xe and Kr molecular ions

摘要

Experimental study of Xe and Kr radiation spectrum temporal dynamics under pumping by nanosecond e-beam have been curried out for the purpose to determinate the dependence of UV radiation efficiency of molecular-ion continua (MIC) cm pressure. The results obtained allow to draw a conclusion, mat with increase of gas pressure it does happen the change of the main radiating molecules from double-ionized to single ionized ones, and the efficiency of MIC radiation in inert gases decreases. To obtain the laser oscillation at MIC of inert gases is more probable at low pressures, when absorption in active medium is small and MIC radiation efficiency is maximal. It is necessary to use a selective narrow-band resonator in this case. From the point of view of efficient use of e-beam energy the optimal excitation geometry is the longitudinal relatively to optical axis.