The Apparatus of Studying Free Radical and Excited Species Reaction

The apparatus of studying free radical and excited species reactions has been built in Dalian Institute of Chemical Physics. It consisted of a supersonic molecular beam source with differential pumping system, a quadrupole mass spectrometer with turbine ＆ ion pumping system, and Chemiluminescence, LIF, REMPI spectra detecting system with a computerized data acquisition. The emission spectra of N₂⁺（B²Σ_u⁺）,N₂（B³Π_g） produced by the collision of N₂（X¹Σ_g⁺） with He（2³S）, Xe(³P_0,2) respectively and CS（A¹Π） produced by CS₂(\tilde X^1Σ_g⁺) with Ar (³P_0,2)have been obtained in our laboratory. The laser excitation spectrum of CN（X²Σ⁺） produced by the C（³P）+N₂O reaction is also presented.