pure and applied geophysics

, Volume 84, Issue 1, pp 154–160 | Cite as

Results of concentration and mobility measurements of positively and negatively charged particles taken by a rocket-borne parachuted aspiration (Gerdien) probe in the height region from 72 to 39 km

  • H. U. Widdel
  • G. Rose
  • R. Borchers


With a self-neutralizing, rocket-borne parachute aspiration probe concentration and mobility measurements of positively and negatively charged carriers were made between 72 and 40 km over Sardinia. Between 72 km and 60 km a ‘heavy’ and a ‘light’ group of positively charged particles were found. The ‘heavy’ group was more abundant than the ‘hight’ group in the greater heights. For the negatively charged particles only one mobility group was found which roughly corresponded to the mobility of the ‘light’ group of the positively charged carriers. The probe was designed so that no electrons could enter the analyzer section of the aspiration system. By this the electron concentration was given by the difference in concentration between the positively and negatively charged particles.


Electron Concentration Analyzer Section Probe Concentration Great Height Mobility Measurement 
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  1. [1]
    G. Rose undH. U. Widdel,Ein Messgerät zur Bestimmung der Strömungsgeschwindigkeit in kurzen Rohren (Ionenzählern) bei niedrigem Gasdruck [a device for measuring the airflow in short tubes (ion counters) at low pressure], Mitteilungen aus dem Max-Planck-Institut für Aeronomie, Nr. 30 (Springer Berlin, Heidelberg-New York 1967).Google Scholar

Copyright information

© Birkhäuser Verlag 1971

Authors and Affiliations

  • H. U. Widdel
  • G. Rose
  • R. Borchers
    • 1
  1. 1.Max Planck Institut für AeronomieLindau (Harz)Germany

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