High-power single-frequency argon ion laser

Single-frequency oscillation has been obtained from an Ar laser of increased power level with the help of a three-mirror Smith reflector (power in the 4880-Å line was 2 watts). Equations and plots that permit the choice of optimum parameters of the three-mirror reflector are given. It is shown that for effective frequency selection in a high-power laser of great length it is necessary to use beam splitter reflectivities exceeding 0.5. Single-frequency lasers of this type may be used in holography.     

Transmutation of <Superscript>99</Superscript>Tc and preparation of artificial stable ruthenium: I. transmutation of metallic <Superscript>99</Superscript>Tc in a high-flux SM reactor

Technetium transmutation into ruthenium in a high-flux SM reactor was numerically simulated. The results were compared with the experimental data on isolation of technogenic stable Ru form irradiated technetium targets. Original Russian Text V.A. Tarasov, E.G. Romanov, Yu.G. Toporov, V.M. Radchenko, K.V. Rotmanov, L.S. Lebedeva, A.A. Kozar’, V.F. Peretrukhin, 2007, published in Radiokhimiya, 2007, Vol. 49, No. 3, pp. 255–257.