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Search Publications by: Jabez J McClelland (Fed)

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Displaying 226 - 250 of 276

Laser Focusing of Atoms: A Particle Optics Approach

January 1, 1990
Author(s)
Jabez J. McClelland, M Scheinfein
The use of TEM* 01 ("donut") mode laser beam has been proposed as a means of focusing an atomic beam to nanometer scale spot diameters. We have analyzed the classical trajectories of atoms through a donut mode laser beam using methods developed for

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

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

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

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