Sub-Doppler spectroscopy of mixed state levels in CH2

被引:3
作者
Chang, Chih-Hsuan [1 ]
Hall, Gregory E. [1 ]
Sears, Trevor J. [1 ]
机构
[1] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA
关键词
MAGNETIC-ROTATION SPECTROSCOPY; OPTICAL DOUBLE-RESONANCE; SINGLET CH2; ABSORPTION-SPECTROSCOPY; VISIBLE ABSORPTION; METHYLENE CH2; SPECTRUM; TRANSITION; (1)A(1); (CH2)-C-1;
D O I
10.1063/1.3502084
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
Perturbations in the 7(16) and 8(18) mixed singlet/triplet levels of (a) over tilde (1)A(1) (0,0,0) methylene, CH2, have been reinvestigated by frequency-modulated laser sub-Doppler saturation spectroscopy. The hyperfine structure was completely resolved for both the predominantly singlet and the predominantly triplet components of these mixed rotational levels using (b) over tilde B-1(1)-(a) over tilde (1)A(1) optical transitions near 12 200 cm(-1) with megahertz resolution. The mixing coefficients were obtained from the observed hyperfine splittings and a two-level deperturbation model. The analysis also determines the energy separation of the unperturbed zero-order levels and the unperturbed hyperfine splittings for the triplet perturbing levels 6(15) (H) over tilde B-3(1) (0,3,0) and 9(37) (X) over tilde B-3(1) (0,2,0). (C) 2010 American Institute of Physics. [doi:10.1063/1.3502084]
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页数:6
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