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Reflected and secondary electrons from an aluminum target

Brinsmade, J. B. (1927) Reflected and secondary electrons from an aluminum target. Physical Review, 30 (4). pp. 494-500. ISSN 0031-899X. doi:10.1103/PhysRev.30.494.

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Velocity distributions of secondary electrons from an aluminum target, bombarded with homogeneous streams of primary electrons, were examined with a magnetic analyser. The secondaries examined were those coming off approximately at right angles with the primary beam. The range of primary velocities used was from 5 volts to 175 volts. Sharply defined peaks, consisting of electrons reflected without loss of energy, constitute 2 percent of the whole distribution at 175 volts, 10 percent at 35 volts, 90 percent at 12 volts, and 95 percent at 7 volts. The coefficient of reflection at right angles is of the order of 10^(-3) to 10^(-2) per unit solid angle, increasing over twenty fold between 100 volts and 8 volts, attaining a maximum at 7 or 8 volts and decreasing sharply below that.

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Additional Information:©1927 The American Physical Society. Received 9 July 1927. The writer is indebted to the Trustees of the California Institute of Technology for the excellent facilities provided and to the Trustees of Williams College for the sabbatical leave during which this work was performed. He also wishes to express his appreciation of the kindly and helpful interest shown by Professor Millikan, Professor Watson and other members of the Institute staff.
Issue or Number:4
Record Number:CaltechAUTHORS:BRIpr27
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2522
Deposited By: Tony Diaz
Deposited On:07 Apr 2006
Last Modified:08 Nov 2021 19:48

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