Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.239..229c&link_type=abstract
In ESA Proceedings of ESA Workshop on a Cosmic X-Ray Spectroscopy Mission p 229-231 (SEE N86-22461 12-89)
Astronomy and Astrophysics
Astronomy
Bolometers, Photon Absorptiometry, Spectrometers, X Ray Astronomy, Diamonds, Germanium, Spaceborne Astronomy
Scientific paper
Use of composite diamond-germanium bolometers developed for IR astronomy for the individual detection of X-ray photons was investigated. The advantage of a composite bolometer is that it separates the absorption and detection functions. Diamond, as absorber, is especially interesting because of its high thermal diffusivity and low heat capacity. The thermalization time of the whole device for a 1 x 1 mm absorber is 50 microsec, allowing detection of a few tens or hundreds counts per second without degradation of the spectral resolution. The theoretical energy resolution is proportional to T C1/2 where C, the specific heat of the bolometer, is a rapidly decreasing function of the temperature T. The expected value is 10eV at 0.1K. Associated with a 1000 sqcm telescope, such a device, whose performance is essentially signal limited, is able to detect an emission line of 0.000001 ph/sqcm/sec in 100,000 sec in the spectrum of a faint X-ray source.
Artzner Guy
Coron N.
Dambier Gérard
Deschamps J. Y.
Jegoudez G.
No associations
LandOfFree
Bolometers as spectrometers for X-ray astronomy 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 Bolometers as spectrometers for X-ray astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bolometers as spectrometers for X-ray astronomy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-800940