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Figure 3
Stokes–Poincare parameters P1, P2 and P3 from polarization measurements of light emitted by the downstream and upstream undulators at 375 eV. The polarization fraction P = (P1 2+P2 2+P3 2)1/2 is also shown. Comparison with the predicted values determined from simple theory indicates that the expected linear light emitted by both undulators is slightly elliptically polarized.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 25| Part 2| March 2018| Pages 378-384
https://doi.org/10.1107/S1600577518001960
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