Butera, S, Lioliou, G, Zhao, S, Whitaker, M D C, Krysa, A B and Barnett, A M (2019) InGaP electron spectrometer for high temperature environments. Scientific Reports, 9. 11096 1-10. ISSN 2045-2322
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Abstract
In this work, a 200 μm diameter InGaP (GaInP) p+-i-n+ mesa photodiode was studied across the temperature range 100 °C to 20 °C for the development of a temperature-tolerant electron spectrometer. The depletion layer thickness of the InGaP device was 5 μm. The performance of the InGaP detector was analysed under dark conditions and then under the illumination of a 183 MBq 63Ni radioisotope beta particle source. The InGaP photodiode was connected to a custom-made low-noise charge-sensitive preamplifier to realise a particle counting electron spectrometer. Beta spectra were collected at temperatures up to 100 °C with the InGaP device reverse biased at 5 V. The spectrum accumulated at 20 °C was compared with the spectrum predicted using Monte Carlo simulations; good agreement was found between the predicted and experimental spectra. The work is of importance for the development of electron spectrometers that can be used for planetary and space science missions to environments of high temperature or extreme radiation (e.g. Mercury, Jupiter’s moon Europa, near-Sun comets), as well as terrestrial applications.
Item Type: | Article |
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Schools and Departments: | School of Engineering and Informatics > Engineering and Design |
Research Centres and Groups: | Space Research Group |
Subjects: | Q Science Q Science > QB Astronomy Q Science > QC Physics |
Depositing User: | Silvia Butera |
Date Deposited: | 02 Aug 2019 09:57 |
Last Modified: | 02 Aug 2019 10:00 |
URI: | http://sro.sussex.ac.uk/id/eprint/85235 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Unset | Unset | STFC | ST/R001804/1 |
Photon counting X-ray and gamma-ray spectroscopy with Al0.52In0.48P detectors | G2140 | EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL | EP/P021271/1 |