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Investigation of new material combinations for hard x-ray telescope designs

Jensen, C. P. and Madsen, K. K. and Christensen, F. E. (2006) Investigation of new material combinations for hard x-ray telescope designs. In: Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray. Proceedings of SPIE. No.6266. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 626612. https://resolver.caltech.edu/CaltechAUTHORS:20191104-124306302

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Abstract

The materials chosen for depth graded multilayer designs for hard x-ray telescopes (10 keV to 80 keV) have until now been focusing on W/Si, W/SiC, Pt/C, and Pt/SiC. These material combinations have been chosen because of good stability over time and low interface roughness, However both W and Pt have absorption edges in the interesting energy range from 70 - 80 keV. If looking at the optical constants Cu and Ni would be good alternative high-Z candidates since the k-absorption edges in Cu and Ni is below 10 keV. We have investigated both of these materials as the reflecting layer in combination with SiC as the spacer layer and give the performance in terms of roughness, minimum obtainable d-spacing and stability over time as deposited in our planar magnetron sputtering facility. Likewise we review the same properties of WC/SiC coatings which we have previously developed and which allow for very small d-spacings. The combination of WC/SiC or the well established W/SiC with the above mentioned Cu and Ni-containing multilayers in the same stack allows for novel telescope designs operating up to and above 100 keV without the absorption edge structure.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.673180DOIArticle
ORCID:
AuthorORCID
Madsen, K. K.0000-0003-1252-4891
Christensen, F. E.0000-0001-5679-1946
Additional Information:© 2006 Society of Photo-Optical Instrumentation Engineers (SPIE).
Group:Space Radiation Laboratory
Subject Keywords:Hard X-ray multilayer, stacked multilayer
Series Name:Proceedings of SPIE
Issue or Number:6266
Record Number:CaltechAUTHORS:20191104-124306302
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191104-124306302
Official Citation:C. P. Jensen, K. K. Madsen, and F. E. Christensen "Investigation of new material combinations for hard x-ray telescope designs", Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 626612 (13 June 2006); https://doi.org/10.1117/12.673180
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99652
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 Nov 2019 21:05
Last Modified:04 Nov 2019 21:05

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