Abstract
An investigation was made of spontaneous Raman scattering of YAG:Nd3+ laser radiation with the wavelength λ=1.064μ by the metastable state 21S of the helium atom and the 2p53p[5/2]2 state of neon, both excited in a hollow-cathode discharge. This scattering produced radiation at the wavelengths of 56.9 and 62.8 nm, respectively. The spectral brightness of the source was 1.5×1015 and 1.0×1014 photons·sec−1·cm−2·sr−1·cm when the population of the He(21S) state was 1.4×1011cm−3 and the population of the Ne(2/p53p[5/2]2) state was 3.5×108cm−3. It was found that the Raman scattering by the atomic or ionic levels excited in a gas-discharge plasma made it possible to generate strong far ultraviolet radiation and could be used for plasma diagnostics.
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