% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@PHDTHESIS{Blsner:19746,
      author       = {Bläsner, Martin},
      title        = {{E}ntwicklung eines bipolaren flugzeuggetragenen
                      {A}erosolmassenspektrometers},
      volume       = {3984},
      issn         = {0944-2952},
      type         = {Dr. (Univ.)},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-19746, Juel-3984},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {VII, 99 p.},
      year         = {2002},
      note         = {Record converted from VDB: 12.11.2012; Bonn, Univ. Diss.
                      2002},
      comment      = {.},
      booktitle     = {.},
      abstract     = {The aim of this thesis is the development of an aerosol
                      mass spectrometer designed to determine aerosols in upper
                      troposphere and the lowermost stratosphere. The instrument
                      named SPLAT (Single Particle Laser Ablation Time of flight
                      mass spectrometer) was developed for the integration in a
                      research aircraft for a flight altitude of about 10 km. The
                      SPLAT system should be able to provide information about the
                      size and the chemical composition of an individual aerosol
                      particle from ambient air. The knowledge of this parameter
                      is of relevance, because of its important role for
                      heterogeneous chemical reactions, for ozone depletion and
                      for cloud formation. Direct effects of aerosol particles,
                      like e.g. scattering and absorption of sunlight, may cause a
                      negative or positive forcing of climate in dependence of
                      size and composition. A differentially pumped inlet system
                      separates the particles from the gas phase within the SPLAT
                      system. At high vacuum conditions the sizing takes place
                      through a laser ray configuration. Two laser rays measure
                      the velocity of every individual particle. The velocity
                      depends an the aerodynamic diameter of the particle.
                      Further, the laser configuration triggers an excimer laser.
                      A pulse of the excimer laser vaporizes and ionizes the
                      particle when it reaches the middle of the mass
                      spectrometer. To determine the mass of the ions formed, they
                      are detected in a time-of-flight mass spectrometer. Both the
                      negative and positive ions of a particle can be detected,
                      because of the bipolar construction of the mass
                      spectrometer. Thereby for the first time extensive studies
                      of the size and the chemical composition of individual
                      aerosol particles are possible for in-flight conditions. The
                      efficiency of the instrument was verified in numerous
                      laboratory measurements with particles of known diameter and
                      known chemical composition. These measurements are further
                      used to calibrate the Instrument. The participation in the
                      MINOS field campaign an the island of Crete yielded the
                      first measurements in ambient aerosol particles.},
      cin          = {ICG-I},
      cid          = {I:(DE-Juel1)VDB47},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      typ          = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
      url          = {https://juser.fz-juelich.de/record/19746},
}