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Isotope-selective photoionization of rubidium by pulsed self-seeded Ti:sapphire laser

パスルチタンサファイアレーザーによる同位体選択的光イオン化

田村 浩司

Tamura, Koji

2重回折格子を有するパルスチタンサファイアレーザー共振器の同位体分離特性を、ルビジウムD$$_{2}$$共鳴線(780nm)及び紫外光による2ステップ光イオン化により生成したイオンを質量分析器により検出することにより測定した。1段の励起波長に応じて$$^{85}$$Rb及び$$^{87}$$Rbに対応したイオン信号が高い選択性で測定され、本共振器構造の有効性を示していた。

In order to demonstrate the applicability of the developed self-seeded pulsed Ti:sapphire laser oscillator with a pair of diffraction gratings to the laser isotope separation, two-step photoionization of rubidium (Rb) using the oscillator output at 780 nm (Rb D$$_{2}$$ line) and the UV laser (the third harmonics of the Nd:YAG laser) was measured. Ion signals correspond to $$^{85}$$Rb and $$^{87}$$Rb isotopes were selectively observed at the first excitation frequency corresponding to their resonance lines. The results shows that Rb atoms were selectively photoionized with high yields of selectivity, and that the developed laser geometry was useful for the laser isotope separation.

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パーセンタイル:9.94

分野:Physics, Applied

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