ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The (4pπ)K 2Π(v=2)←(3sσ)A 2Σ+(v=1)←X2Π(v=0) system of NO has been studied by (2+1) optical-optical double resonance laser induced fluorescence (LIF) dip techniques. These experiments utilized two high resolution, continuous-wave lasers. The spectral resolution obtained under these conditions has provided measurements of the frequencies to an absolute accuracy of better than 0.002 cm−1, and of the widths to an average precision of 3% of the K←A(2,1) rotational transitions of interest. Term energies of individual rovibronic levels of both the Ω=0.5 and Ω=1.5 spin–orbit components of the (4pπ)K 2Π(v=2) Rydberg state of 14N16O have been determined. For values of J=2.5 to 4.5, the lifetimes of these levels range from 189 to 410 ps. These results demonstrate the potential of high resolution, cw lasers in double resonance studies of molecules. The ability to excite selectively to a single, completely specified quantum level, e.g., one hyperfine level, within the resonant intermediate state will ultimately allow studies of transition frequencies and lifetimes as functions of Ω, J, F, and parity providing a more explicit description of the structural and dynamical ramifications of complex multistate interactions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.457882
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