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A volumetric direct nuclear-pumped laser has been achieved for the first time by using the 3He(n,p)3H reaction to excite a 3He-Ar laser. Lasing was achieved at 1.79 μ in Ar I at total pressures ranging from 200 to 700 Torr with 10% Ar, demonstrating stable high-pressure lasing. Laser energy output increased with both increasing total pressure and thermal neutron flux.
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Jalufka et al. (1976) studied this question.
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