Study on the Two-photon Resonance-enhanced Multiphoton Ionization of CF Radicals:Rotational Analysis of 3p Rydberg State

CF radicals were generated by using a dc discharge in the mixture of Ar/CF4,Ar/CF2Cl2,and Ar/CF3COOH.The rotationally resolved(2+1)resonance-enhanced multiphoton ionization(REMPI)spectra of CF radical have been investigated in the wavelength range 260～360nm.The analysis shows that the observed spectra can be assigned as the two-photon resonance excitation 3pπD2Πr(ν'=2～6,r=3/2,1/2)←←X2Πr(ν"=0,r=3/2,1/2).The related rotational constants and the spin-orbit splitting values of CF 3p Rydberg state have been derived.