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Journal of Physics Conference Series

Coincidence measurements of electron impact excitation of the 41P1state of Zn

Mariusz Piwiński, Łukasz Kłosowski, D. Dziczek, Stanisław Chwirot

Published Nov 5, 2012• 0 citations
Publisher

Abstract

Electron-photon coincidence technique has been used to obtain Stokes and Electron Impact Coherence Parameters (EICPs) for excitation of 4 1 P 1 state of zinc atoms. We present an extended set of data for incident electron energy of 100 eV and electron scattering angles from 5° to 40°.
DOI
10.1088/1742-6596/388/4/042011

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The coherence analysis technique has been used to determine the state of polarizatitn of 228.8 nm radiation emitted by cadmium atoms excited to 51P1 state by electron impact. Data have been obtained for incident electron energy of 100 eV for scattering angles in the range from 10° to 40°. Reduced Stokes parameters and electron impact coherence parameters (EICP), characterizing the state of the excited atoms immediately after the collision, have been extracted from the measurements and compared with results of relativistic distorted-wave approximation calculations. Theoretical predictions are in good qualitative agreement with experimental values.