SPECTROMETER FOR ATMOSPHERIC IONS IN THEIR UPPER-MOST RANGE OF MOBILITY
Abstract
In the past, the mobility of atmospheric ions, and the number density in different mobility ranges (Ion Spectrum) have been measured in the terrestrial atmosphere in the heights from ground to about 5 km. Electric conductivities of the atmosphere have been measured up to about 30 km, and ion number densities to about 75 km. To extend the possibility of ion spectrum measurements up to the same height, a new method has been developed and tested in the laboratory. Its application in the free atmosphere is being prepared. The instrument may be used in planetarian atmosphere. The method consists of a GERDIEN-type 'differential ion counter of the second order,' providing a predetermined location of ion intake and a number of separate receiving electrodes for the ion impact. The driving voltage is a.c., its amplitude is increasing downstream the chamber. A low pressure wind tunnel for continuous operation, mostly in the subsonic range, has been developed and constructed for the laboratory experiments. This tunnel and its possible applications for other purposes are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 04, 1965
- Accession Number
- AD0638761
Entities
People
- August L. Oster
- Hans Dolezalek