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Center Independent Research & Development: GSFC IRAD

Hard X-ray Photoelectric Polarimeter

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Project Introduction

Our objective is to determine the gas mixtures and pressures that would enable a sensitive, hard X-ray polarimeter using existing flight components with the goal of making astrophysical measurements using the InFOCμS hard X-ray optics on a long duration balloon flight. Photoelectric allows high sensitivity, low systematics polarization measurements, and photoelectric absorption remains the dominant interaction.  The broad outline is to measure the characteristics of mixtures, retrofit detectors for high pressure operation, and prepare for a balloon flight using the InFocus balloon payload to pave the way to a dedicated mission. 

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