Physics
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phrvl..84.6034s&link_type=abstract
Physical Review Letters, Volume 84, Issue 26, June 26, 2000, pp.6034-6037
Physics
53
Scientific paper
Photoelectric charging measurements are presented of dust grains in vacuum for isolated grains and for grains near a photoemissive surface. Isolated grains reach a positive-equilibrium floating potential, dependent upon the work function of the particle, which causes the emitted electrons to be returned. Grains dropped past a photoemitting surface reach a negative floating potential for which the sum of the emitted and collected currents is zero. The particles tested are 90-106 μm in diameter and are composed of Zn, Cu, graphite, and glass.
Colwell Joshua E.
Horanyi Mihaly
Robertson Scott
Sickafoose Amanda A.
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