| Resonance-enhanced multiphoton ionization of NO via X~2II-A~2Σ transition |
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| 作者姓名： | 张连水 张贵银 杨晓冬 李裔 赵晓辉 |
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| 作者单位： | College of Physics Science and Technology，Hebei University，Baoding 071002，College of Physics Science and Technology，Hebei University Baoding 071002 North China Electric Power University，Baoding 071003，College of Physics Science and Technology，Hebei University，Baoding 071002，College of Physics Science and Technology，Hebei University Baoding 071002，College of Physics Science and Technology，Hebei University Baoding 071002 |
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| 基金项目： | This work was supported by the Natural Science Foundation of Hebei Province under Grant No. 102090. L. Zhang's e-mail address is laser@mail.hbu.edu.cn. |
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| 摘 要： | The resonance-enhanced multiphoton ionization (REMPI) spectrum of NO has been obtained in the range of 420 - 480 nm with a Nd:YAG pumped optical parametric generator and amplifier. The spectral lines can be attributed to NO X2II(v=0,1)-A2(v' = 0,1) transitions. In this wavelength range, NO molecules are ionized via the resonant intermediate state A2E+ and by a (2 + 2) REMPI process. The dependence of ion signals on laser intensity and gas pressure is discussed. The variation of the ionization signal versus laser intensity is near quartic. This is in good agreement with theory.
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