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  • 1995-1999  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Trace pollutants analysis in soil by a time-resolved laser-induced breakdown spectroscopy technique (1996)
    Springer
    Applied physics 63 (1996), S. 185-190 
    Details
    ISSN: 1432-0649
    Keywords: 8670C ; 8670L ; 3580B
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The results of a joint experiment of IFAM-Pisa and ENEA-Frascati for the detection of traces of pollutants in soil by a time-resolved laser-induced spectroscopy technique are reported. Using samples of soil with known pollutants' concentration [Geochemical Exploration Reference (GXR) silicate from US Geological Survey], we were able to estimate the sensitivity of this Laser-Induced Breakdown Spectroscopy (LIBS) technique to be of the order of some parts per million for a vast class of metallic pollutants, including extremely dangerous soil pollutants such as copper, lead and chromium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01095271
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Diode laser spectroscopy of overtone bands of acetylene (1996)
    Springer
    Applied physics 63 (1996), S. 277-282 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 07.65.Gj ; 33.70.Jg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract.  Overtone absorption lines of acetylene in the regions around 12700 and 11800 cm-1 have been examined by the use of tunable diode lasers in free-running mode. The diode laser emission wavelength was scanned around the gas resonances by simply sweeping its injection current, permitting a direct observation of the absorption line-shapes. Weak overtone absorption lines have been detected by using the wavelength modulation (WM) spectroscopy with 2nd harmonic detection technique and the collisional broadening and shift coefficients have been obtained. The high resolving power and accuracy of the spectrometer permitted a wavenumber error of less than 0.01 cm-1. The correct interpretation of the absorption signals when detecting the second harmonic in the presence of a sloping background is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01833797
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Diode laser spectroscopy of overtone bands of acetylene (1996)
    Springer
    Applied physics 63 (1996), S. 277-282 
    Details
    ISSN: 1432-0649
    Keywords: 07.65.Gj ; 33.70.Jg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Overtone absorption lines of acetylene in the regions around 12700 and 11800 cm−1 have been examined by the use of tunable diode lasers in free-running mode. The diode laser emission wavelength was scanned around the gas resonances by simply sweeping its injection current, permitting a direct observation of the absorption line-shapes. Weak overtone absorption lines have been detected by using the wavelength modulation (WM) spectroscopy with 2nd harmonic detection technique and the collisional broadening and shift coefficients have been obtained. The high resolving power and accuracy of the spectrometer permitted a wavenumber error of less than 0.01 cm−1. The correct interpretation of the absorption signals when detecting the second harmonic in the presence of a sloping background is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01833797
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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