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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 10 7/cm3.由所得之光谱 ,更精确地得到两个里德堡态 3d2 E″及 3d2 A1′之光谱系数
In order to prove the sensitivity of this method, we used the cross-molecular beam reaction of F + CH4 (CD4) → HF (DF) + CH3 ( CD3) with an absolute sensitivity of 10 7 / cm 3 From the spectra obtained, the spectral coefficients of the two Rydberg states 3d2 E "and 3d2 A1 ’are more precisely obtained