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Author: search.filters.author.Cheng, Bing-MingSubject: search.filters.subject.Absorption spectra

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    Absorption spectra in the vacuum ultraviolet region of small molecules in condensed phases
    (2008-12-15)
    Lu, Hsiao-Chi
    ;
    Chen, Hong-Kai
    ;
    Cheng, Bing-Ming
    ;
    Ogilvie, J. F.
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    材料科學與工程學系
    With radiation from a synchrotron we measured the spectra of several small molecular species in the, solid phase at 10K, either pure -O(2), NO, CO(2), N(2)O, H(2)O and NH(3) - or, for NH3 also dispersed in Ar at, molar ratio 1/250, from the onset of absorption in the ultraviolet region until the limits of transmission by crystalline LiF or solid At. In a quantitative treatment of spectral data, we fitted the total absorption profile divided by wavenumber to Gaussian curves of minimal number, and made tentative assignments of electronic transitions and vibrational structure by comparison with spectra of gaseous species. These results illuminate the nature of electronic spectra of samples in solid phases in the vacuum ultraviolet region. (C) 2008 Elsevier B.V. All rights reserved.