27 November 1989 X-Ray Calibration Of The Rosat Position Sensitive Proportional Counter II. The Energy Calibration
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Abstract
The ROSAT position sensitive proportional counter is a multi wire X-ray detector which uses a mixture of Argon, Xenon and Methan as counter gas. In the X-ray energy band from 0.1 keV to 2.2 keV, this gas shows several absorption edges, caused by Argon-L and Xenon-N shells between 100 eV and 350 eV, and Xenon-M shells between 670 eV and 1150 eV. To measure the anode pulse height as a function of X-ray energy, we set up an X-ray spectrometer, using a transmission grating with 1000 lines per mm and a high intensity X-ray continuum source. The spectrometer had a resolution of 0.3 A. Besides the well known discontinuity of the pulse height at the Argon-L III/II edges, we could identify almost all Xenon edges in our energy range. Between the edges, the anode pulse height is proportional to the X-ray energy. At the edges, the pulse height drops, corresponding to an energy loss of a few electron volt. We will describe the measurements and present the results.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
U. G. Briel, U. G. Briel, W. Burkert, W. Burkert, E. Pfeffermann, E. Pfeffermann, } "X-Ray Calibration Of The Rosat Position Sensitive Proportional Counter II. The Energy Calibration", Proc. SPIE 1159, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics, (27 November 1989); doi: 10.1117/12.962584; https://doi.org/10.1117/12.962584
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