摘要
利用Ａｒ／ＣＦ４、Ａｒ／ＣＦ２Ｃｌ２或Ａｒ／ＣＦ３ＣＯＯＨ混合气体的直流脉冲放电产生ＣＦ自由基，观测了２６０～３６０ｎｍ范围内转动分辨的ＣＦ自由基双光子共振增强多光子电离谱．分析表明，该段光谱对应于ＣＦ自由基３ｐπＤ２πｒ（ｖ’=２～６，ｒ=３／２，１／２）←←Ｘ２Пｒ（ｖ”＝０，ｒ＝３／２，１／２）的共振激发。对观测的振动带进行了转动分析，并获得了３ｐ里德堡态的转动常数和自旋-轨道分裂值。
CF radicals were generated by using a dc discharge in the mixture of Ar/CF4, Ar/CF2Cl2, and Ar/CF3COOH. The rotationally resolved (2+1) resonance-enhanced multiphoton ionization (REMPI) spectra of CF radical have been investigated in the wavelength range 260 -360nm. The analysis shows that the observed spectra can be assigned as the two-photon resonance excitation 3pлr D2bлr (v' =2- 6, r= 3/2, 1/2) X2л(v'=0, r=3/2, 1/2). The related rotational constants and the spin-orbit splitting values of CF 3p Rydberg state have been derived.
基金
国家自然科学基金
国家教委回国人员基金
九五攀登计划资助课题
