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  • 1990-1994  (2)
  • Atomic and molecular measurement and techniques  (1)
  • FIR Laser Lines  (1)
  • 42.60B
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 14 (1992), S. 605-611 
    ISSN: 0392-6737
    Keywords: Other topics in atomic spectra and interactions of atoms with photons ; Photon interactions with atoms ; Atomic and molecular measurement and techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The optogalvanic signal (OGS) induced in a uranium-neon hollow-cathode discharge was measured as a function of the laser power density for the 0→16900 cm−1 (591.5 nm) uranium transition. Theoretical relations derived by solving a two-level system rate equations showed the OGS dependence on the laser photon flux, for a modulated c.w. light and for stimulated transitions starting from the ground state. A fitting of the theoretical relations to the experimental measurements allowed the determination of the σ0 τ product, that is, the saturation parameter of the transition. The results showed good agreement between the σ0 τ values obtained by the optogalvanic and the usual optical absorption processes.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of infrared and millimeter waves 15 (1994), S. 1-44 
    ISSN: 1572-9559
    Keywords: FIR Laser Lines ; Methanol's Isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The technique of optical pumping in polar molecules is the most efficient for Far-Infrared (FIR) laser generation, providing also a versatile and powerful tool for molecular spectroscopy in this spectral region. Methanol (CH3OH) and its isotopic varieties are the best media for optically pumped FIR laser, with over thousand lines observed, and the most widely used for investigations and applications. In this sense, it is important organize and make available catalogues of FIR laser lines as complete as possible. Since the last critical reviews of 1984 [1] on methanol and its isotopic varieties [2,3,4], over hundred papers have been published dealing with hundreds of new FIR laser lines. In 1992 a review of FIR laser lines from CH3OH was presented [5]. In this communication we extend this work to the other methanol isotopes, namely CH3OD, CD3OH, CD3OD,13CH3OH,13CD3OH,13CD3OD, CH3 18OH, CH2DOH, CHD2OH and CH2DOD.
    Type of Medium: Electronic Resource
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