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- W72450892 abstract "Three novel methods are described for producing electron beams with energies of hundreds of keV. In the first method, an intense electron beam hits a lead target. The initial portion of the beam vaporizes the lead to form a gaseous target that scatters the rest of the beam, thereby generating a beam of polarized electrons. In the second method an electron beam is passed through a beam of polarized hydrogen atoms. The polarized electrons formed by ionization are confined in an electrostatic trap until the current pulse of the ionizing beam ends, after which they are extracted by voltage pulses. In the third method the electrons accumulate on the surface of a dielectric in a magnetic field. After the spins have relaxed, the electrons are removed from the surface by an electric field. Calculations and preliminary experiments indicate that these methods can be used to generate polarized electrons with beam currents of several hundred mA in a pulse of duration {approximately}1 {mu}s, with degree of polarization {approx}40% in the first method and nearly 100% polarization in the second and third methods. 12 refs., 6 figs., 1 tab." @default.
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- W72450892 date "1992-11-01" @default.
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- W72450892 title "Some new methods for producing a pulsed beam of polarized electrons" @default.
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