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  • Calculation of molecular spectra  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1119-1137 
    ISSN: 0392-6737
    Keywords: Calculation of molecular spectra ; Molecular spectra, grouped by wavelength ranges ; Infra-red and Raman spectra and scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si discutono in dettaglio gli spettri Raman rotazionali di un rotatore quasi simmetrico. Dalla teoria dei momenti spettrali si ricavano espressioni per gl'invarianti della polarizzabilità e per i diversi tempi di correlazione in gioco. Si presenta una generalizzazione della teoria di Gordon dellaJ-diffusion, che permette di riprodurre anche gli spettri in cui è ancora evidente la quantizzazione dei livelli rotazionali della molecola. Si suggerisce un'ulteriore generalizzazione del modello, che tenga conto dell'anisotropia della molecola durante la collisione.
    Abstract: Резюме Подробно обсуждаются ротационные рамановские спектры для почти симметричного ротатора. Используется теория спектрального момента для получения выражений для инвариантов поляризуемости и для различных времен корреляций. Предлагается обобщение теории ГордонаJ-диффузии, которое позволяет воспроизвести также спектры, в которых учитывается квантование ротационных состояний молекулы. Предлолагается, что дальнейшее обобщение модели позволит обьяснить анизотропию молекулы во время процесса соударения.
    Notes: Summary Rotational Raman spectra for an accidentally or nearly symmetric rotor are discussed in detail. The spectral-moment theory is used to yield expressions for the polarizability invariants and for the different orientational correlation times involved. A generalization of Gordon'sJ-diffusion is presented which is able to reproduce also spectra in which the quantization of the rotational states is still present. A further generalization of the model is suggested to account for the molecular anisotropy during the collision process.
    Type of Medium: Electronic Resource
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