【摘要】 用ＣＦ２Ｃｌ２分子直流脉冲放电的方法产生ＣＦ２Ｃｌ自由基，结合共振增强多光子电离（ＲＥＭＰＩ）技术，测量了３３２—３６２ｎｍ波长范围内ＣＦ２Ｃｌ自由基的（２＋１）ＲＥＭＰＩ光谱，分析并标识了４ｓＲｙｄｂｅｒｇ态带源位于（ν０—０＝５５３７１ｃｍ－１），两个被激活振动模ω′３（ＣＦ２剪式振动模）和ω４′（ＯＰＬＡ振动模）的频率分别为５２３±７ｃｍ－１和７３４±４ｃｍ－１；４ｐＲｙｄｂｅｒｇ位于ν０—０＝５７６０１３ｃｍ－１，ω′３和ω′１分别为５５２±１０ｃｍ－１和７６２±１２ｃｍ－１．估算了４ｓ和４ｐＲｙｄｂｅｒｇ态量子亏损值．更多还原

【Abstract】 AbstractThe (2+1) resonance enhanced multiphoton ionization (REMPI) spectra of the CF2Cl radicals, which are generated by a pulsed dc discharge,were investigated between 332 and 362nm.Two new Rydberg states,4s and 4p,were observed and indentified.The observed states and spectroscopic constants include 4s Rydberg state (band origin ν0—0=55371cm-1,ω3′ (CF2 scissors)=523±7cm-1,ω′4 (OPLA,i.e.,out of plane bending mode)=734±4cm-1) and 4p Rydberg state (ν0—0=576013cm-1,ω3′=552±10cm-1,ω4′=762±12cm-1).The quantum defect values of 4s and 4p Rydberg states were also estimated.It seems that the radical production by a pulsed dc discharge combined with PEMPI technique is a powerful tool to study the electronic state of radicals.更多还原