Determination of Electron Polarization by Means of Mott Scattering

Determination of Electron Polarization by Means of Mott Scattering

The results of a numerical calculation of the polarization asymmetry factor, S( THETA ) = ( sigma ( THETA )!/sup 1/2/, and the single scattering cross section for the scattering of electrons by the unscreened Coulomb fields of gold and aluminum at energies of 75 and 121 kev are presented. The result...

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Veröffentlicht in:Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, 1959-01, Vol.114 (6), p.1541-1542
Hauptverfasser: Sherman, Noah, Nelson, Donald F.
Format: Artikel
Sprache:eng
Schlagworte:
ALUMINUM
ANGULAR DISTRIBUTION
ATOMIC MODELS
CROSS SECTIONS
ELECTRIC FIELDS
ELECTRONS
ENERGY RANGE
GOLD
INTERACTIONS
NUMERICALS
PHYSICS AND MATHEMATICS
POLARIZATION
QUANTITATIVE ANALYSIS
SCATTERING
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Zusammenfassung:The results of a numerical calculation of the polarization asymmetry factor, S( THETA ) = ( sigma ( THETA )!/sup 1/2/, and the single scattering cross section for the scattering of electrons by the unscreened Coulomb fields of gold and aluminum at energies of 75 and 121 kev are presented. The results for gold at 121 kev are compared with the Mohr and Tassie calculations for the same element and energy which include the effects of screening. This comparison (indicating a Mott asymmetry about 50% greater for the screened field at angles near 165 deg ) suggests the desirability of more detailed investigation of screening effects in order to be confident of Mott scattering as a means of measuring the polarization of electrons is this energy region. (auth)
ISSN:0031-899X
DOI:10.1103/PhysRev.114.1541