Calibration of Si(Li) detectors for X-ray astronomy

Details Calibration of Si(Li) detectors for X-ray astronomy Calibration of Si(Li) detectors for X-ray astronomy

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nimpa.242..382l&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 242, Issue 3, p. 382-386.

Physics

3

Scientific paper

The characterization of a high performance, energy dispersive Si(Li) solid-state detector is presented. The response of the detector to K and L lines in the energy range 0.7-9.0 keV is obtained by using a Van de Graaff accelerator to bombard selected targets having 12 <= Z <= 50 with a high energy proton beam. In addition to the channel-to-energy calibration and resolution vs energy plot, an empirical relation is presented for line yield as a function of energy for the K lines. Further, spectral data are used to estimate the silicon dead layer thickness. Finally, a detailed characterization of the detector's response function, including deviations from a simple Gaussian form due to effects such as incomplete charge collection, is given. From these results, a procedure is indicated by which X-ray spectrometers used in X-ray astrophysics applications may be calibrated.

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