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The Use of Laterally Graded Multilayer Mirrors for Soft X-ray Polarimetry

The Use of Laterally Graded Multilayer Mirrors for Soft X-ray Polarimetry

来源:Arxiv_logoArxiv
英文摘要

We present continued development of laterally graded multilayer mirrors (LGMLs) for a telescope design capable of measuring linear X-ray polarization over a broad spectral band. The multilayer-coated mirrors are used as Bragg reflectors at the Brewster angle. By matching to the dispersion of a spectrometer, one may take advantage of high multilayer reflectivities and achieve modulation factors over 50% over the entire 0.2-0.8 keV band. In Phase II of the polarimetry beam-line development, we demonstrated that the system provides 100% polarized X-rays at 0.525 keV (Marshall et al. 2013). Here, we present results from phase III of our development, where a LGML is used at the source and laterally manipulated in order to select and polarize X-rays from emission lines for a variety of source anodes. The beamline will then provide the capability to test polarimeter components across the 0.15-0.70 keV band. We also present plans for a suborbital rocket experiment designed to detect a polarization level of better than 10% for an active galactic nucleus.

Herman L. Marshall、David L. Windt、Eric Blake、Zane McInturff、Eric M. Gullikson、Dan Getty、Norbert S. Schulz

MITReflective X-ray OpticsU. Massachusetts LowellU. WisconsinLBNLMITMIT

10.1117/12.2057003

物理学原子能技术基础理论粒子探测技术、辐射探测技术、核仪器仪表

Herman L. Marshall,David L. Windt,Eric Blake,Zane McInturff,Eric M. Gullikson,Dan Getty,Norbert S. Schulz.The Use of Laterally Graded Multilayer Mirrors for Soft X-ray Polarimetry[EB/OL].(2014-07-17)[2025-08-23].https://arxiv.org/abs/1407.4791.点此复制

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