Astronomical soft x-ray mirrors reflectivity enhancement by multilayer coatings with carbon overcoating

Physics – Optics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

6

Scientific paper

A number of X-ray astronomical missions of near future will make use of hard X-ray optics with broad-band multilayer coatings. However multilayer mirrors can be also useful to enhance the effective area of a given X-ray telescope in the "classical" low energy X-ray band (0.1 - 10 keV), the window where X-ray spectroscopy provides very useful plasma diagnostics) with a consistent gain with respect to usual single-layer reflectors. Multilayers for soft X-rays are based on stacks with constant d-spacing (in order to minimize the loss due to the photoelectric effect). A further gain in reflectivity (however only restricted to the energy range between 0.5 and 4 keV) can be achieved by using a low density material as a first external layer of the film, with the role of reducing the photoelectric absorption effect when the mirror acts in total external reflection regime (Carbon is the most performing material for this specific scope). In this paper the impact of using soft X-ray multilayer mirrors in future X-ray telescopes is discussed, and soft X-ray reflectivity tests performed on prototype samples presented.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Astronomical soft x-ray mirrors reflectivity enhancement by multilayer coatings with carbon overcoating does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Astronomical soft x-ray mirrors reflectivity enhancement by multilayer coatings with carbon overcoating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Astronomical soft x-ray mirrors reflectivity enhancement by multilayer coatings with carbon overcoating will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1807958

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.