STRUCTURED EFFECTS OF RYDBERG-RYDBERG ROTATIONAL COUPLING ON INTENSITIES IN THE ZERO ELECTRON KINETIC-ENERGY THRESHOLD PHOTOIONIZATION SPECTRUM OF STATE-SELECTED NO2

被引:42
作者
BRYANT, GP
JIANG, Y
MARTIN, M
GRANT, ER
机构
[1] PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907
[2] CSIC,INST QUIM FIS ROCASOLANO,E-28006 MADRID,SPAIN
关键词
D O I
10.1021/j100196a008
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Transitions from individual rovibrational levels of the 3p-sigma 2-SIGMA(u)+ state, selected by double resonance, yield rotationally resolved threshold photoionization spectra of NO2. Observed photoionization cross sections conform with simple angular-momentum selection rules for transitions from aa well-defined Hund's case b intermediate state to the case d Rydberg states that lie just below each successive threshold, except for the appearance of anomalous lines corresponding to large negative changes in ion-core rotational angular momentum. These latter transitions are found to be structured, and this structure is shown to reflect a Rydberg-Rydberg coupling hierarchy induced in zero field by the quadrupole moment of the finite core and facilitated in its final discrete-discrete step by low-field Stark mixing.
引用
收藏
页码:6875 / 6880
页数:6
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