Circular dichroism in photoelectron angular distributions from two-color
نویسندگان
چکیده
A_ de~ail~d ex~erimental and theoretical study of dichroic effects in photoelectron angular d1stnbut10ns IS reported for ( 1 + 1), two-color REMPI of NO via the A 2L +, v = 0 state. ?ptically aligned A state rotational levels are probed through ionization by circularly polarized hght. Resultant photoelectron angular distributions exhibit significant left-right asymmetry, the phase and magnitude of which are shown to be related to the curvature of the excited state MJ distribution. Theoretical calculations involving a full ab initio treatment of the ionization dynamics result in circularly dichroic angular distribution ( CDAD) parameters in good agreement with those derived experimentally. Additional effects including hyperfine depolarization and coherence are also discussed in relation to the observed CDAD data.
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