粒子線励起Ar-Xeレーザーの慣性核融合への応用の可能性

概要

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Fission-product-beam pumped Ar-Xe laser as a candidate of the driver for a hybrid fission-fusion reactor is studied. Such hybrid reactor can reduce the power requirements for the laser driver. These Ar-Xe lasers have been realized as reactor pumped lasers (RPL) with pulsed reactors. However, high power RPL experiments often face the problem of premature termination of laser output power with respect to the pumping power. Several reasons, including temperature effects, outgassing of impurities from walls have been discussed. Two experiments, elucidating the influence of water vapor impurities in the lasing gas mixture and laser threshold, and the effects of temperature rise in the laser gas on laser output have been performed at the Munich Tandem accelerator, using 100 MeV^<32>S^<9+> beams, thus simulating RPL experiments at a pumping power density of 〜 100W/cm^3. Using these experimental and theoretical results, these RPL- oscillations can be stabilized with high instinctive efficiency. Laser-gas-purification systems and breakeven conditions and related requirements on the hybrid reactor using RPL driver schematically discussed.
社団法人プラズマ・核融合学会の論文
2000-03-25