25 September 2012 Modeling charge transport in swept charge devices for x-ray spectroscopy
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Abstract
We present the formulation of an analytical model which simulates charge transport in Swept Charge Devices (SCDs) to understand the nature of the spectral redistribution function (SRF). We attempt to construct the energy-dependent and position dependent SRF by modeling the photon interaction, charge cloud generation and various loss mechanisms viz., recombination, partial charge collection and split events. The model will help in optimizing event selection, maximize event recovery and improve spectral modeling for Chandrayaan-2 (slated for launch in 2014). A proto-type physical model is developed and the algorithm along with its results are discussed in this paper.
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P. S. Athiray, S. Narendranath, P. Sreekumar, J. Gow, V. Radhakrishna, B.R.S. Babu, "Modeling charge transport in swept charge devices for x-ray spectroscopy", Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 84532L (25 September 2012); doi: 10.1117/12.925878; https://doi.org/10.1117/12.925878
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