| 摘要 |
PURPOSE:To sharply improve ionization efficiency and ion selectivity by exciting a substance to be ionized to a comparatively lower exciting condition through gasdischarge, resonant light exciting the Rydberg condition through irradiation of laser beam and to the ion condition through application of electric field. CONSTITUTION:The beryllium vapor 10 is supplied to a vessel 1 from a gas discharge hole 1a. The RF discharge is generated by an induction coil 16, simultaneously a laser beam generating part oscillates and a voltage is applied to electrodes 5 and 6 in synchronization with laser oscillation. Electrons by RF discharge collide with the beryllium vapor 10, the laser beams B3-B5 cross at the ion producing space 4 within the vessel 1, the beryllium vapor 10 is resonant- excited step by step to the Rydberg condition, and finally the excited vapor is ionized by pulse field generated from a field generating part 15. |
