Browsing by Author "Robertson, Scott"

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    • Electron loss and meteoric dust in the mesosphere 

      Friedrich, Martin; Rapp, Markus; Blix, Tom Arild; Hoppe, Ulf-Peter; Torkar, Klaus; Robertson, Scott; Dickson, S; Lynch, K. (2012)
      The ionosphere is always assumed to contain equal numbers of positive and negative charges in a given volume (quasineutrality). Hence fewer electrons than positive charges are an indication of negative charges other than ...

    • First in situ measurement of the vertical distribution of ice volume in a mesospheric ice cloud during the ECOMA/MASS rocket-campaign 

      Rapp, Markus; Strelnikova, Irina; Strelnikov, Boris; Latteck, Ralph; Baumgarten, Gerd; Li, Qiang; Megner, Linda; Gumbel, Jörg; Friedrich, Martin; Hoppe, Ulf-Peter; Robertson, Scott (2009)
      We present in situ observations of mesospheric ice particles with a new particle detector which combines a classical Faraday cup with the active photoionization of particles and subsequent detection of photoelectrons. Our ...

    • Mass analysis of charged aerosol particles in NLC and PMSE during the ECOMA/MASS campaign 

      Robertson, Scott; Horányi, Mihály; Knappmiller, Scott; Sternovsky, Zoltan; Holzworth, Robert H.; Shimogawa, Michelle M.; Friedrich, Martin; Torkar, Klaus; Gumbel, Jörg; Megner, Linda; Baumgarten, Gerd; Latteck, Ralph; Rapp, Markus; Hoppe, Ulf-Peter; Hervig, Mark E. (2009)
      MASS (Mesospheric Aerosol Sampling Spectrometer) is a multichannel mass spectrometer for charged aerosol particles, which was flown from the Andoya Rocket Range, Norway, through NLC and PMSE on 3 August 2007 and through ...