DISPERSED FLUORESCENCE SPECTROSCOPY OF JET-COOLED DCO

被引:30
作者
TOBIASON, JD
DUNLOP, JR
ROHLFING, EA
机构
[1] Combustion Research Facility, Sandia National Laboratories, Livermore
关键词
D O I
10.1016/0009-2614(95)00102-A
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
We obtain dispersed fluorescence (DF) spectra of jet-cooled DCO from three excited-state levels in the ($) over tilde B(2)A'-($) over tilde X(2)A' system. These spectra yield term energies and relative fluorescence intensities for 112 levels (mostly quasibound resonances) of DCO (($) over tilde X) over an energy range of 0-19000 cm(-1). We make zeroth-order, normal-mode vibrational assignments to 99 levels; however, their term energies are not well described by the customary (Dunham) expression due to extensive vibrational mixing and the weak C-D bond. The use of an improved spectroscopic Hamiltonian that includes Fermi resonance and Darling-Dennison coupling terms is discussed.
引用
收藏
页码:268 / 276
页数:9
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