【摘要】 用时间分辨富里叶红外发射谱仪（TR－FTIRS），研究了248nm激光先解甲酸体系，检测到振动激发态产物CO（v≤8）、CO2（v3≤9）及H2O（v）的红外发光，由此得到光解的两个通道：HCOOH→CO＋H2O及HCOOH01→CO2＋H2。光谱拟合获得新生CO、CO2的振动布居，并求出了两个通道的分支比．发现初生产物CO2的振动布居有明显反转，生成CO2通道的贡献大于生成CO2的通道．道。更多还原

【Abstract】 Abstrct: The photodissodation of HCOOH at 248nm was investigatal by Time -Resolved Fourier Transform Infrared Spodroscopy （TR-FTIRS）. Infrared edsions from vibrationally excited products CO（v≤8）, CO₂ （v₃≤9） and H₂O（v） were detected and nascent vibrational population of CO and CO₂ was obtained. There was an apparent population inversion of CO₂, indicating a very fast proass for HCOOH to dissociate into CO₂. It was found that the contributinn of pathway to produce CO was larger than that to produce CO,₂更多还原