锡原子激光共振电离

Laser Resonance Ionization for Tin Atoms

就Ｎｄ：ＹＡＧ泵浦的染料激光进行锡原子三步共振电离，求解非饱和共振过程速率方程。计算共振吸收截面，给出电离效率分别与激发速率、电离速率以及作用时间的关系，得出饱和激发电离的流量条件和通量条件。并进行了讨论。

In this paper, we study the tin atoms resonance ionization with Nd: YAG pumped dye laser, The rate equations for a three level system are soled in cases of unsaturation resonance process. We calculate the absorption cross section for initial state and excitant state, gained that the ionization efficiency relating to the rate of excitation and ionization and the interaction time respectivily, and obtained the conditions on the photon flux and fluence for saturated excitation and ionization. Last we carry out a series of discussion.