[Observation of carbon-bear free radicals using far infrared laser magnetic resonance spectroscopy].
The principle and technical characters of far infrared laser magnetic resonance (FIRLMR) spectrometer built up in China are introduced. A CO2 transversely pumped far infrared laser is adopted. In order to obtain high sensitivity, the sample absorption cell is placed in the FIR laser cavity and separated from laser gain cavity with thin polypropylene film. The spectrometer can be employed to study short lived free radicals. The spectra of many transient free radicals including CCH, CF and CH2 have been detected by the spectrometer. These transients are generated by mixing CH4 with the fluorine atoms produced with microwave discharge.
Huang
Guang-ming
GM
Department of Physics, Central China Normal University, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China.
Shi
Li-hua
LH
Cai
Xin
X
Liu
Yu-yan
YY
D002244:Carbon / Q000737:chemistry; D002245:Carbon Dioxide; D004578:Electron Spin Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods*; D005609:Free Radicals / Q000737:chemistry; D007834:Lasers; D019265:Spectroscopy, Near-Infrared / Q000295:instrumentation / Q000379:methods*; D014732:Vibration
D005609:Free Radicals; D002245:Carbon Dioxide; D002244:Carbon