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Topic Area: Electron Physics

Displaying records 31 to 40 of 93 records.
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31. Progress on Spin Detectors and Spin-polarized Electron Scattering from Na at NIST
Topic: Electron Physics
Published: 1/1/1990
Author: Jabez J McClelland
Abstract: We provide a simple explanation, based on an effective field, for the precession damping rate due to the spin-orbit interaction. Previous effective field treatments of spin-orbit damping include only variations of the state energies with respect to ...

32. Use of Thorium as a Target in Electron Spin Analyzers
Topic: Electron Physics
Published: 4/1/1989
Authors: Jabez J McClelland, M Scheinfein, Daniel Thornton Pierce
Abstract: 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 ...

33. Increased Sherman Function in Electron Spin Analyzers Using a Bulk Thorium Target
Topic: Electron Physics
Published: 1/1/1989
Authors: Jabez J McClelland, M Scheinfein, Daniel Thornton Pierce

34. Spin Sensitivity of a Channel Electron Multiplier
Topic: Electron Physics
Published: 3/1/1988
Authors: R E. Scholten, Jabez J McClelland, Michael H Kelley, Robert Celotta
Abstract: 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 ...

35. Mott Scattering Measurements of the Spin Polarization of the NBS GaAs Electron Source
Topic: Electron Physics
Published: 4/6/1987
Authors: Jabez J McClelland, B Waclawski
Abstract: Measurements of the spin polarization of the GaAs electron source were carried out on the atom beam apparatus in the Electron Physics Group at the National Bureau of Standards. Both a cylindrical Mott analyzer operating at 100kV ("Maximott") and a h ...

36. GaAs Spin Polarized Electron Source
Topic: Electron Physics
Published: 4/1/1980
Authors: Daniel Thornton Pierce, Robert Celotta, G Wang, W Unertl, A Galejs, C Kuyatt, S Mielczarek
Abstract: 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 43{plus or minus}2% is produced using NEA GaAs (100 ...

37. Recent Advances in Polarized Electron Sources
Topic: Electron Physics
Published: 3/27/1980
Authors: Daniel Thornton Pierce, Robert Celotta

38. Sources of Polarized Electrons
Topic: Electron Physics
Published: 1/1/1980
Authors: Robert Celotta, Daniel Thornton Pierce

39. Electron Impact Spectroscopy: An Overview of the Low-energy Aspects
Topic: Electron Physics
Published: 1/1/1979
Authors: Robert Celotta, R Huebner

40. Focusing and dispersing properties of a stigmatic crossed-field energy analyzer
Topic: Electron Physics
Published: 5/1/1978
Authors: A Galejs, C Kuyatt
Abstract: The electron-optical properties of a stigmatic crossed-field energy analyzer (double-focusing Wien filter) have been obtained from exact trajectory calculations. The results are given in the form of focusing and dispersing coefficients to the second ...

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