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E.M. Laubacher (Univ. Dayton), PLEXAS Team
An engineering prototype of the Polarimeter for Low Energy X-Ray Astrophysical Sources (PLEXAS) has been built and tested. A Ni/C multilayer crystal was used as the X-Ray polarimeter of the PLEXAS instrument. 100% polarized bremstrahlung X-rays were used to measure the response of the instrument at \~0.18 keV. The experimental concept and design of the PLEXAS prototype will be presented and the test results evaluated. A discussion of the most recent measurements will be presented.
PLEXAS is designed for a University Explorer Mission.
EML gratefully acknowledges support from the NSF-REU program and from the SAO.