C.R. Vaughn T.A. Miller J.H. English R.H. Shiley V.E. Bondybey 1981 The absorption and laser induced fluorescence of several halogenated benzene radical cations were studied in solid Ne matrices. The spectra of 1,2,4-trifluorobenzene, l,3-dichloro-5-fluorobenzene, and l-chloro-3,5- difluorobenzene radical cations are observed and analyzed. Studies of fluorescence polarization and a photoselection technique were used to examine the splitting of the degeneracy of the benzene cation ground state by asymmetric subsitution. ?? 1981 American Institute of Physics. application/pdf 10.1063/1.441120 en American Institute of Physics Halogenated benzene radical cations and ground state degeneracy splitting by asymmetric substitution article