【摘要】 利用Ｎｄ：ＹＡＧ激光泵浦的脉冲染料激光记录了铀原子单色多光子共振电离谱。获得的绝大多数共振属于三光子电离过程，而另外一些共振，我们认为是四光子电离过程。更多还原

【Abstract】 The single-colour multiphoton resonant ionization spectrum of atomic uranium isrecorded in the spectral range from 613. 0 to 651.0 urn by using a Nd: YAG laser-pumpedpulsed dye laser. Most of the observed resonances are assigned to resonant ionization processes involving three photons, but some resonances are suggested to involve four photon prooesses.更多还原