Reinvestigation of the (4, 20) band of the O2 second negative system |
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| Authors: | Yan Chen Lunhua Deng Xuping Shao Jingxia Chen Yangqin Chen Xiaohua Yang |
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| Affiliation: | aState Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, PR China |
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| Abstract: | High resolution absorption spectra of the (4, 20) band in the second negative system (A2Πu–X2Πg) of O2+ cation were measured and analyzed in the range of 11 900–12 300 cm–1 via optical heterodyne velocity modulation spectroscopy. Precise molecular constants of the levels involved were obtained by a nonlinear least-squares fitting procedure combining with our previous spectra of the (4, 19) and (6, 20) bands. |
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| Keywords: | Molecular constants O2+ Second negative system |
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