Physics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13...64k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 13, Jan. 1986, p. 64-67.
Physics
5
Electron Acceleration, Electron Beams, Electron Emission, Space Charge, Electron Guns, Equations Of Motion, Sepac (Payload)
Scientific paper
During electron beam accelerator operation on Spacelab I, substantial fluxes of electrons were observed with energies greater than the initial beam energy. Numerical calculations are performed for the emission of an unneutralized, one-dimensional electron beam. These calculations show clearly that space charge oscillations, which are associated with the charge buildup on the emitter, strongly modify the beam and cause the returning beam particles to have a distribution of kinetic energies ranging from half to over twice the initial energy.
Jongeward G. A.
Katz Itamar
Parks D. E.
Purvis C. K.
Reasoner David L.
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