Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.121..321d&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 121, no. 2, April 1986, p. 321-332.
Astronomy and Astrophysics
Astrophysics
Bragg Angle, Cosmic Plasma, Emission Spectra, High Resolution, Spectrometers, X Ray Spectra, Cosmic X Rays, Diffuse Radiation, High Temperature Plasmas, Interstellar Space, Line Spectra, Spectral Resolution
Scientific paper
Based on the de Broglie geometry for the study of extended sources, a widefield high-resolution Bragg spectrometer for the observation of the soft X-ray cosmic diffuse background, is developed. The system consists of a mosaic of TlAP crystals associated with position sensitive detectors located on the focusing element. The spectral resolution and its variation with the field of view is estimated by Monte Carlo simulations for different X-ray energies chosen among the most intense lines emitted by an astrophysical plasma in the 1-4 million K temperature range. The estimated high sensitivity, and the simulations of actual space observations, show that the system is capable of separating the strongest lines emitted by the most abundant ions, and of mapping the whole sky during a six-month mission.
Deschamps J. Y.
Rocchia Robert
Tarrius Andre
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