Pair creation energy and Fano factor of silicon measured at 185 K using Fe55 x-rays

I. V. Kotov; H. Neal; P. O'Connor

doi:10.1117/12.2310131

6 July 2018 Pair creation energy and Fano factor of silicon measured at 185 K using ⁵⁵Fe x-rays

I. V. Kotov, H. Neal, P. O'Connor

Proceedings Volume 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII; 107091E (2018) https://doi.org/10.1117/12.2310131
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The pair creation energy,ω and the Fano factor of silicon were measured using a CCD sensor and X-rays from an ⁵⁵Fe source. The measurements were performed at a sensor temperature of 185K. The pair creation energy was measured for X-rays in the 1.7-6.5 keV range. The measured pair creation energy is ω = (3:650 ± 0:009) eV at the Mn Kα line energy. The Fano factor at this energy is F = 0:128±0:001. The agreement with theory and previous measurements is satisfactory. The system gain was obtained from at field exposures using the Poisson distribution properties. These results and the details of our measurement procedure are presented below.

Conference Presentation

Citation Download Citation

I. V. Kotov, H. Neal, and P. O'Connor "Pair creation energy and Fano factor of silicon measured at 185 K using ⁵⁵Fe x-rays", Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107091E (6 July 2018); https://doi.org/10.1117/12.2310131

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