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Physics

Electron physics

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Displaying 226 - 250 of 349

Use of Thorium as a Target in Electron Spin Analyzers

April 1, 1989
Author(s)
Jabez J. McClelland, M Scheinfein, Daniel T. Pierce
Measurements of the effective Sherman function have been carried out for 10-100-keV spin-polarized electrons scattering from a thick thorium target in a retarding Mott analyzer. At 20 and 100 keV the dependence on the maximum energy loss accepted by the

Spin Sensitivity of a Channel Electron Multiplier

March 1, 1988
Author(s)
R E. Scholten, Jabez J. McClelland, Michael H. Kelley, Robert Celotta
We report direct measurements of the sensitivity of a channel electron multiplier to electrons with different spin orientations. Four regions of the multiplier cone were examined using polarized electrons at 100-eV incident energy. Pulse counting and

GaAs Spin Polarized Electron Source

April 1, 1980
Author(s)
Daniel T. Pierce, Robert Celotta, G Wang, W Unertl, A Galejs, C Kuyatt, S Mielczarek
The design, construction, operation, and performance of a spin polarized electron source utilizing photoemission from negative electron affinity (NEA) GaAs are presented in detail. A polarization of 43plus or minus}2% is produced using NEA GaAs (100). The
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