化学物理学报
化學物理學報
화학물이학보
CHINESE JOURNAL OF CHEMICAL PHYSICS
2002年
3期
218-223
,共6页
郑伟良%徐维成%周金刚%刘国平
鄭偉良%徐維成%週金剛%劉國平
정위량%서유성%주금강%류국평
四波混频%共振加强式多光子游离法%里德堡态%甲基
四波混頻%共振加彊式多光子遊離法%裏德堡態%甲基
사파혼빈%공진가강식다광자유리법%리덕보태%갑기
Four-wave mixing%Resonance-enhanced multiphoton ionization (REMPI)%Rydberg state%Methyl
用(真空紫外光+紫外光)-共振加强式多光子游离法侦测甲基自由基.为证明此法之灵敏度,实验用交叉分子束反应F+CH4(CD4)→HF(DF)+CH3(CD3),其绝对灵敏度可达107/cm3.由所得之光谱,更精确地得到两个里德堡态3d2E″及3d 2A1′之光谱系数.
用(真空紫外光+紫外光)-共振加彊式多光子遊離法偵測甲基自由基.為證明此法之靈敏度,實驗用交扠分子束反應F+CH4(CD4)→HF(DF)+CH3(CD3),其絕對靈敏度可達107/cm3.由所得之光譜,更精確地得到兩箇裏德堡態3d2E″及3d 2A1′之光譜繫數.
용(진공자외광+자외광)-공진가강식다광자유리법정측갑기자유기.위증명차법지령민도,실험용교차분자속반응F+CH4(CD4)→HF(DF)+CH3(CD3),기절대령민도가체107/cm3.유소득지광보,경정학지득도량개리덕보태3d2E″급3d 2A1′지광보계수.
A (VUV+UV)-REMPI spectroscopy scheme was exploited to detect the methyl radical (CH3). To demonstrate its high sensitivity, a crossed-beam scattering experiment was conducted with CH3(CD3) as the reaction product from F+CH4(CD4). The absolute detection limit was estimated to be about 107/cm3. From the observed spectra, the spectroscopic constants of the two intermediate Rydberg states, 3d 2E″ and 3d 2A1′, were also refined.
