caa a22 4500 606150676 CHVBK 20210128100540.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10512-015-9984-7 doi (NATIONALLICENCE)springer-10.1007/s10512-015-9984-7 Active Element Diameter and Uranium Coating Thickness Effect on Nuclear-Pumped Gas-Laser Efficiency [Elektronische Daten] [P. D'yachenko, N. D'yachenko, E. Poletaev] A comparative experimental study is performed of the lasing characteristics of a laser operating on the 2.03 μm transition of atomic xenon with direct, uranium fission fragment, pumping of the active medium in the form of a mixture of the gases He, Ar, and Xe in cylindrical active elements of two types, differing by the diameter and thickness of the uranium coating. It is shown that a three-fold reduction of the diameter and coating thickness of the active element results in a 1.5-fold increase of the laser efficiency in terms of energy. One possible explanation of this effect is examined: a source of internal losses of laser radiation present in the active medium due to scattering by radial acoustic gas-density waves excited by the pump pulse. Springer Science+Business Media New York, 2015 D'yachenko P. State Science Center of the Russian Federation - Leipunskii Institute for Physics and Power Engineering (GNTs RF - FEI), Obninsk, Russia aut D'yachenko N. State Science Center of the Russian Federation - Leipunskii Institute for Physics and Power Engineering (GNTs RF - FEI), Obninsk, Russia aut Poletaev E. State Science Center of the Russian Federation - Leipunskii Institute for Physics and Power Engineering (GNTs RF - FEI), Obninsk, Russia aut Atomic Energy Springer US; http://www.springer-ny.com 118/4(2015-08-01), 227-233 1063-4258 118:4<227 2015 118 10512 https://doi.org/10.1007/s10512-015-9984-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10512-015-9984-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- D'yachenko P. State Science Center of the Russian Federation - Leipunskii Institute for Physics and Power Engineering (GNTs RF - FEI), Obninsk, Russia aut NATIONALLICENCE 700 1- D'yachenko N. State Science Center of the Russian Federation - Leipunskii Institute for Physics and Power Engineering (GNTs RF - FEI), Obninsk, Russia aut NATIONALLICENCE 700 1- Poletaev E. State Science Center of the Russian Federation - Leipunskii Institute for Physics and Power Engineering (GNTs RF - FEI), Obninsk, Russia aut NATIONALLICENCE 773 0- Atomic Energy Springer US; http://www.springer-ny.com 118/4(2015-08-01), 227-233 1063-4258 118:4<227 2015 118 10512