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X-ray scattering from a lithium disc and Bragg reflection from a mosaic graphite crystal can be exploited
to measure the linear polarization of radiation emitted from cosmic x-ray sources. The sensitivity is greatly
enhanced if these polarimeters are placed at the focus of an x-ray telescope. Such devices form two of the three
components of the Stellar X-Ray Polarimeter experiment scheduled to fly on the SPECTRUM-X-Gamma
mission. The experiment will reside at the focus of one of the SODART x-ray telescopes. We describe the
expected on-axis performance of these two components of the Stellar X-Ray Polarimeter experiment based
on detailed Monte-Carlo simulation:;. We also discuss various systematic effects, both external and internal
to the experiment, that must be considered in order to properly design and utilize the experiment.
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Martin C. Weisskopf, Ronald F. Elsner, Robert Novick, Philip E. Kaaret, Eric H. Silver, "Predicted performance of the lithium scattering and graphite crystal polarimeter for the Spectrum-X-Gamma mission," Proc. SPIE 1343, X-Ray/EUV Optics for Astronomy, Microscopy, Polarimetry, and Projection Lithography, (1 February 1991); https://doi.org/10.1117/12.23215