Sub-Doppler optical-optical double-resonance spectroscopy of BaO
作者： Richard A. Gottscho , Paul S. Weiss , Robert W. Field , J.Gary Pruett
DOI: 10.1016/0022-2852(80)90117-4
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摘要: Abstract Vibronic levels of BaO with energies in the 4-eV region are observed by cw dye laser optical-optical double-resonance (OODR) spectroscopy. Sub-Doppler, 0.003-cm−1-precision OODR spectra C1Σ+-A1Σ+ (1,0), (2,1), and (3,1) bands recorded rotationally analyzed, numerous perturbations detected C1Σ+ state partially analyzed. Broad bandwidth, 0.2-cm−1-precision, (0,0) (4,2) as well (3,2), (4,2), (5,3), (6,3) a new D1Σ+-A1Σ+ system obtained Additional bandheads several but incompletely characterized electronic states, B1Π, E1Σ+, c( 3 Π 0 ) , also reported. Spectroscopic constants determined for D1Σ+ are: C 1 Σ + D T e ( cm −1 32 872.7 (30) 835 (6) ω 436.0 (8) 403.6 (28) x 0.90 (16) 3.8 (3) y 0.041 (10) — B 0.2397 0.2197 (20) α 0.00270 (18) 0.0015 (4) R A 2.2151 2.314 Quantitites parentheses 1σ uncertainties last digit.
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