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  • 1990-1994  (5)
  • 13CH3OH  (1)
  • Atomic and molecular measurement and techniques  (1)
  • FIR Laser Lines  (1)
  • Side effect  (1)
  • frequency measurement  (1)
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Material
Years
  • 1990-1994  (5)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Determination of the saturation parameter of electronic transition in a uranium-neon hollow-cathode discharge by optogalvanic spectroscopy (1992)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 14 (1992), S. 605-611 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF02462347
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Acute agranulocytosis after prolonged high-dose usage of intravenous dipyrone — a different mechanism of dipyrone toxicity? (1993)
    Springer
    Annals of hematology 66 (1993), S. 153-155 
    Details
    ISSN: 1432-0584
    Keywords: Agranulocytosis ; Dipyrone ; Neutropenia ; Side effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two seriously injured trauma patients presenting with intense and progressive neutropenia are described. Bone marrow examination in both cases showed virtually absent granulopoiesis but normal erythropoiesis and megakaryopoiesis, allowing the diagnosis of acute agranulocytosis. Discontinuation of only one drug (dipyrone) with no further treatment was required for normalization of blood parameters. The association of dipyrone with neutropenia is still debatable. The recent medical literature on dipyrone generation of agranulocytosis is reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01697627
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Frequency measurements of far infrared laser lines by means of MIM point contact diodes (1994)
    Springer
    International journal of infrared and millimeter waves 15 (1994), S. 1347-1360 
    Details
    ISSN: 1572-9559
    Keywords: methanol ; Far Infrared laser ; frequency measurement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present frequency measurements of 85 Far Infrared (FIR) laser lines ranging from 2 748 GHz to 421 GHz. We use the heterodyne technique of mixing FIR laser transitions and microwave radiation on MIM point contact diodes to determine the FIR frequencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02096088
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Acoustooptic extension of the frequency tunability of CW CO2 lasers: New FIR lasers emissions from CH3OH and13CH3OH (1991)
    Springer
    International journal of infrared and millimeter waves 12 (1991), S. 449-471 
    Details
    ISSN: 1572-9559
    Keywords: waveguide CO2 lasers ; new FIR laser lines ; CH3OH ; 13CH3OH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have increased the frequency tunability of our CW waveguide CO2 lasers by means of an acoustooptic amplitude modulator, operating at the fixed frequency of 90 MHz. The up-shifted, or down-shifted, laser optical sideband can be generated independently by adjusting the orientation of the modulator. The efficiency is larger than 50%. The frequency tunability of the CO2 laser around each laser line is thus increased by 180 MHz. To demonstrate the possibilities of this method, a source composed of the above modulator and of a CW, 300 MHz tunable waveguide CO2 laser has been used for the search of new large offset FIR laser lines from optically pumped CH3OH and13CH3OH molecules. As a result 15 and 10 new large offset laser lines were discovered respectively. New assignments of some laser lines are also proposed. We have also measured the Stark effect, the offset, and the polarization of other already known lines. In particular a Stark effect frequency tuning of about 1 GHz is demonstrated for a laser line at 208.399 μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010879
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A review of optically pumped far-infrared laser lines from methanol isotopes (1994)
    Springer
    International journal of infrared and millimeter waves 15 (1994), S. 1-44 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF02265874
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    Paper (German National Licenses)
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