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Center Independent Research & Development: GSFC IRAD

Normal-Incidence X-ray Mirror

Active Technology Project

Project Introduction

This effort focuses on the development of a novel normal-incidence X-ray mirror using multilayer reflective coating. The first step is to demonstrate the feasibility of normal-incidence X-ray imaging at E~0.5 keV. While such mirrors exist in the FUV (E<0.1-0.15 keV), so far this approach has not been used at higher energies, because the layers of the multilayer coating must be very thin and their boundaries very sharp and regular. The team is trying to use ALD to coat small polished glass samples (flat plates and off-the-shelf optical concave mirrors) with several types of multilayers using in-house and commercial ALD facilities. Measurements of the peak reflectivity and the width of the energy response are being done in-house using a monochromatic source at the varying incidence angle. Angular resolution of the coated concave mirror will be measured using in-house facilities and detectors. Additionally, a mission study that would utilize this mirror is planned at Wallops MPL in the CubeSat group.

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Project Duration

Technology Maturity (TRL)

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