An Attempt to Observe Mott Scattering Optically
The authors report an attempt to make an optical observation of Mott scattering, involving the first studies of inelastic collisions between polarized electrons and a heavy noble gas. Polarization fractions of light emitted by the 5p 56p(5/2)3(3D3) state of Xe following impact excitation in an axial collision geometry were measured as a function of the incident electron energy, and compared with distorted-wave Born calculations. The theoretical and experimental results agree qualitatively in the energy range where cascade contributions to the photon signal are small. The authors failed to measure non-zero values of the linear polarization fraction η1 which would have constituted unambiguous evidence for Mott scattering and/or the importance of higher-order excitation processes in this system.
J. E. Fürst et al., "An Attempt to Observe Mott Scattering Optically," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 25, no. 5, pp. 1089-1096, Institute of Physics - IOP Publishing, Mar 1992.
The definitive version is available at http://dx.doi.org/10.1088/0953-4075/25/5/019
Keywords and Phrases
Axial collision; Distorted waves; Energy ranges; Excitation process; Impact excitation; Incident electrons; Inelastic collision; Linear polarization; Noble gas; Optical observations; Polarization fractions; Polarized electrons; Excited states; Polarization; Xenon; Scattering
International Standard Serial Number (ISSN)
Article - Journal
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