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Applied Physics Letters / Volume 26 / Issue 4

Appl. Phys. Lett. 26, 187 (1975); http://dx.doi.org/10.1063/1.88110 (4 pages)

Observation of laser action in CO gas excited only by fission fragments

D. A. McArthur and P. B. Tollefsrud

Sandia Laboratories, Albuquerque, New Mexico 87115

We report the first clear observation of laser action in a medium excited only by fission fragments. CO gas at 77 °K and pressure ≈100 Torr was excited by fission fragments from enriched 235U3O8 foils, which were irradiated with neutrons from a fast−burst reactor. The laser signal was ≳103 times the fluorescence signal, disappeared if the laser output mirror was misaligned, and had a very sharp onset and fall. The measured laser pulse energy was 10 times the maximum possible fluorescence energy.

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KEYWORDS and PACS

Keywords

FISSION FRAGMENTS, CARBON MONOXIDE, URANIUM OXIDES, URANIUM 235, EXCITATION, LASER RADIATION, FOILS, FLUORESCENCE, NEUTRON BEAMS, IRRADIATION, NUCLEAR PUMPING, LASERS

PACS

  • 42.55.Lt

    Gas lasers including excimer and metal-vapor lasers

  • 28.50.-k

    Fission reactor types

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.88110

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

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