复合物C_6H_5CH_3…Ar和C_6D_5CD_3…Ar的共振电离光谱

Resonant Ionization Spectra of Van Der Waals Complexes C_6H_5CH_3...Ar and C_6D_5CD_...Ar

本文报道了复合物Ｃ６Ｈ５ＣＨ３Ａ３和Ｃ６Ｄ５ＣＤ３Ａｒ的共振电离光谱的实验和理论研究．在超声束中，利用双光子共振电离光谱技术和飞行时间质谱技术，揭示了复合物中甲基的内转动和Ａｒ原子振动的信息，利用同位素效应以及内转动和振动能级计算，合理地归属了实验中观察到的涉及 ＣＨ３转动和 Ａｒ振动的光谱．

A combined experimental and theoretical study of resonant ionization spectra for van der Waals complexes P_6H-5CH_3 .Ar and C_6D_5CD_3 .Ar is reported. Using resonant ionization speotrometry, together with time-of-flight mass spectrometry, in supersonic molecular beam, internal rotation for CH_3 and intermolecular vibration for atom Ar in the complexes are exhibited, all observed bands are rationally assigned by isotope effect and calculated internal rotational leverls and external vibrational leverls.