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Topic Area: Electron Physics

Displaying records 41 to 50 of 100 records.
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41. 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 ...

42. 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 ...

43. 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 ...

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

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

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

47. 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 ...

48. Systematic transformations of the asymptotic aberration coefficients of round electrostatic lenses (1)
Topic: Electron Physics
Published: 5/1/1978
Author: C Kuyatt
Abstract: In previous work we formulated the third-order asymptotic aberration coefficients of round (axially symmetric) electrostatic lenses in a form independent of object and aperture positions, and expressions for the six quantities which are sufficient t ...

49. Temperature Effects in Polarized Low-Energy Electron Scattering from Solids and Liquids
Topic: Electron Physics
Published: 3/1/1978
Author: W Unertl
Abstract: The effects of temperature on the polarization of low-energy electrons scattered from surfaces of liquids, polycrystals, and single crystals are discussed. The polarization of the single scattering component of the intensity is shown to be independe ...

50. Tests of Fourth-Order Difference Equations for Laplace's Equation in Cylindrical Coordinates
Topic: Electron Physics
Published: 1/1/1978
Authors: C Kuyatt, A Galejs

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