Oscillator strengths for the Schumann-Runge bands of 16O2 |
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| Affiliation: | 1. Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, HBNI, Kolkata 700064, India;2. Department of Physics, Presidency University, 86/1, College Street, Kolkata 700073, India;3. Department of Electrical Engineering, IIT Bombay, Powai, Mumbai 400076, Maharashtra, India;4. Surface Physics and Material Science Division, Saha Institute of Nuclear Physics1/AF, Bidhannagar, Kolkata - 700064, India;1. Laboratory of Physical-Chemistry of Solid State, Department of Chemistry: Faculty of Sciences of Sfax, University of Sfax 3018 Sfax, Tunisia;2. Dép. de Fisica, Universita de Girona, Compus Montilivi, Girona 17071, Spain;1. Shanghai Institute of Technical Physics, Key Laboratory of Infrared Imaging Materials and Detector, Chinese Academy of Sciences, Shanghai, China;2. University of Chinese Academy of Sciences, Beijing, China;1. Department of Physics, Presidency University, 86/1, College Street, Kolkata, 700073, India;2. Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India |
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| Abstract: | Experimental oscillator strengths are presented for the (1-0)-(22-0) and (3-1)-(17-1) Schumann-Runge bands of 16O2. A wavelength resolution of ~0.04 Å enabled individual rotational lines to be studied and an equivalent width data analysis method was used. The now established decrease in equivalent band oscillator strength with increased rotation is observed. The mean band oscillator strengths of this work for the (1-0)-(12-0) bands are in excellent agreement with recent ultra-high resolution absolute measurements, and the oscillator strength density is found to be continuous across the dissociation limit. The dipole moment deduced from the present oscillator strengths agrees well with recent ab initio and semi-empirical determinations. |
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