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Effects of alpha particles on the scattering function in CO2 laser scattering

L. Vahala, G. Vahala, D.J. Sigmar1986年被引用 31Nuclear FusionIF 3出版社

It is shown that the alpha-particle contribution to the scattered power can be dominant in the coherent scattering of a CO2 laser in a Maxwellian plasma. For Ti = Te = 10 keV, the optimal forward-scattering angle is around 1.0°, with detection of the electron density fluctuation wavenumbers k⊥ >> k|| (relative to the toroidal magnetic field). A strong resonance occurs at the lower hybrid frequency. Because of the strong dependence of the scattered signal on the alpha-particle temperature and the alpha distribution function, it seems feasible that CO2 laser scattering, using heterodyne techniques, could give detailed local information on fusion alphas.

日本語訳

マクスウェルプラズマにおけるCO2レーザーのコヒーレント散乱において、散乱パワーに対するアルファ粒子の寄与が支配的となり得ることが示される。Ti = Te = 10 keVの場合、最適な前方散乱角は約1.0°であり、電子密度ゆらぎの波数k⊥ >> k||(トロイダル磁場に対して)の検出が行われる。低混成周波数において強い共鳴が生じる。散乱信号のアルファ粒子温度およびアルファ分布関数への強い依存性のため、ヘテロダイン法を用いたCO2レーザー散乱により、核融合アルファ粒子に関する詳細な局所情報が得られる可能性があると思われる。

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