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  • Force field calculations  (1)
  • PACS: 61.40; 78.30  (1)
  • Rotational and vibrational energy tranfer  (1)
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Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Vibrational Spectroscopy 8 (1994), S. 45-52 
    ISSN: 0924-2031
    Keywords: Force field calculations ; Hexafluorodisilane ; Infrared spectrometry ; Raman spectrometry
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 11 (1989), S. 1693-1707 
    ISSN: 0392-6737
    Keywords: Multiphoton precesses in molecules ; Rotational and vibrational energy tranfer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si describe in questo lavoro una semplice tecnica interferometrica che permette di misurare contemporaneamente sia l'assorbimento che il tempo di rilassamento vibrazionale-traslazionale di molecole poliatomiche sottoposte ad intensa eccitazione risonante attraverso un laser nell'infrarosso (10.6 μm). In particolare, abbiamo applicato tale tecnica allo studio del freon-22 (CF2HCl), una molecola poliatomica di dimensioni intermedia che, a parte la sua possibile, applicazione nella separazione isotopica del13C, presenta interessanti caratteristiche nell'assorbimento nella regione attorno ai 10 μm. I risultati ottenuti sono discussi e comparati con quelli precedentemente ottenuti sullo SF6.
    Abstract: Резюме В зтой статье описывается простая интерферометрическая техника, которая допускает прямые и одновременные измерения потлощения знергии и времени колебателыно-трансляционной релаксксации для полиатомных молекул, сильно возбужденных резонансным инфракрасным (10.6 мкм) пазерным излучением. В частхости, мы применяем зтот метод исследования фреона −22 (CF2HCl), молекулы средних размеров, которая обнаруживает интецные особенности поглоэения в области 10 мкм. Полученные результаты сравниваются с ранее полученными данными для SF6.
    Notes: Summary We describe in this paper a simple interferometric technique which allows a direct and simultaneous determination of energy absorption and of the vibrational-translational relaxation time of polyatomic molecules strongly excited by reasonant, infrared (10.6 μm) laser radiation. In particular, we have applied this method to the study of freon-22 (CF2HCl), a medium-size molecule that, apart from its potential application in13C isotope separation, shows interesting absorption features in the 10 μm region. The results are also compared with our previous findings in SF6.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0630
    Keywords: PACS: 61.40; 78.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: -1 . The effects of some relevant electrochemical parameters (the electrolyte, the polymerization current density, and the deposition time) on the reflectance spectra of polypyrrole are reported. The optical constants for polypyrrole films were calculated from the reflectance spectra by Kramers–Kronig technique. The decrease of the electropolymerization current density and film thickness results in an increase of the reflectance and dc conductivity values for PPY(TSO).
    Type of Medium: Electronic Resource
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