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Search Publications by: Michael H. Kelley (Assoc)

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Displaying 51 - 75 of 114

Superelastic Scattering of Spin-polarized Electrons from Sodium

September 1, 1989
Author(s)
Jabez J. McClelland, Michael H. Kelley, Robert Celotta
Superelastic scattering of spin-polarized electrons from laser-excited sodium atoms has been measured at incident energies of 2.0, 17.9, and 52.3 eV over the angular range 10°-120°. Circularly polarized excitation of the sodium atoms was used to produce

Improved Low-Energy Diffuse Scattering Electron-Spin Polarization Analyzer

January 1, 1989
Author(s)
M Scheinfein, Daniel T. Pierce, John Unguris, Jabez J. McClelland, Robert Celotta, Michael H. Kelley
An improved low-energy diffuse scattering electron-spin polarization analyzer is described. It is based on the low-energy (150 eV) diffuse scattering of polarized electrons from polycrystalline evaporated Au targets. By collecting large solid angles and

Electron Spin Polarization Analyzers for Use with Synchrotron Radiation

April 1, 1988
Author(s)
Daniel T. Pierce, Robert Celotta, Michael H. Kelley, John Unguris
The measurement of the spin polarization of photoelectrons emitted from a magnetic material is discussed. An important consideration is the acceptance phase space of the spin analyzer relative to the phase space of the photoemitted electrons to be measured

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

Large Angle Superelastic Electron Scattering from Na(3P)

June 28, 1987
Author(s)
Jabez J. McClelland, Michael H. Kelley, Robert Celotta
Measurements of superelastic scattering of 2eV electrons from oriented Na(3P) atoms have been carried out over the angular range 10 to 120°. Results are presented in terms of L perp}, the angular momentum transferred perpendicular to the scattering plane