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Gadolinium EUV Multilayers for Solar Imaging Near 60 nm

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Reflective X-ray Optics, LLC
1361 Amsterdam Avenue, Suite 3B New York, NY 10027-2589
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2008
Title: Gadolinium EUV Multilayers for Solar Imaging Near 60 nm
Agency: NASA
Contract: NNM08AA24C
Award Amount: $600,000.00


We propose to develop and commercialize a new class of extreme ultraviolet (EUV) multilayer coatings containing the rare-earth element gadolinium (Gd), designed as efficient narrow-band reflective mirror coatings operating near normal incidence in the 60-65 nm wavelength range. This long-wavelength region of the EUV includes the important solar emission lines O V near l=63.0 nm and Mg X near l=61.0 nm, formed at intermediate temperatures in the solar atmosphere. While narrow-band EUV multilayer coatings are by now widely used in NASA missions for high-resolution solar imaging at wavelengths shorter than 35 nm, the observations made at those wavelengths probe coronal and transition region lines formed at either low (e.g., He II at l=30.4 nm) or high (e.g., numerous Fe lines) temperatures. In contrast, the 60ýý65 nm wavelength region provides a unique spectral window in which to observe intermediate-temperature solar emission lines. However, efficient narrow-band multilayer coatings operating in this range have been unavailable until now. The successful development of efficient, stable Gd-based multilayers as we propose, based on preliminary experimental results, especially those obtained during our Phase I effort, will therefore enable the construction of new high-resolution solar telescopes tuned to O V or Mg X that will complement existing multilayer telescopes tuned to shorter EUV wavelengths, thereby providing more complete temperature coverage, and leading to better understanding of the solar atmosphere, its variability, and its crucial role in driving space weather. EUV imaging instruments incorporating the multilayer technology we propose to develop may be included in future missions such as RAM, Solar Probe, and Solar Orbiter, as well as future GOES satellites and new Explorer-class missions.

Principal Investigator:

David Windt
Principal Investigator

Business Contact:

David L. Windt
Small Business Information at Submission:

Reflective X-ray Optics, LLC
1361 Amsterdam Avenue, Suite 3B New York, NY 10027

EIN/Tax ID: 201910234
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No