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Experimental Study of Dust Grain ChargingThe results of an experimental study of the charging mechanisms of micron size dust grains are presented. Individual dust grains are electrodynamically suspended and exposed to an electron beam of known energy and flux, and to far ultraviolet radiation of known wavelength and intensity. Changes in the charge-to-mass ratio of the grain are directly measured as a function of incident beam (electron and/or photon), grain size and composition. Comparisons of our results to theoretical models that predict the grain response are presented.
Document ID
19990106249
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Spann, James F (NASA Marshall Space Flight Center Huntsville, AL United States)
Venturini, Catherine C. (Alabama Univ. Huntsville, AL United States)
Comfort, Richard H. (Alabama Univ. Huntsville, AL United States)
Mian, Abbas M. (NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
May 24, 1999
Subject Category
Physics (General)
Distribution Limits
Public
Copyright
Other

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