Development of Pt/C multilayer supermirrors for hard X-ray optics

✍ Scribed by Koujun Yamashita

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 254 KB
• Volume: 529
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2004.04.177

✦ Synopsis

Pt/C multilayer supermirrors with the periodic length of 29-130 A and number of layer pairs of 25-65 were fabricated and evaluated to get higher reflectivity in the hard X-ray range of 20-40 keV by making use of the Bragg reflection. They were assembled in a grazing incidence X-ray telescope with the diameter of 40 cm and focal length of 8 m using 2040 pieces in total. The effective area and angular resolution were obtained to be 50 cm 2 at 30 keV and 2:4 arcmin ðHPDÞ; respectively. The performance of this hard X-ray telescope was confirmed by a balloon-borne observation of a celestial object.