Silicon microdosimetry
- 25 November 2010
- journal article
- research article
- Published by Oxford University Press (OUP) in Radiation Protection Dosimetry
- Vol. 143 (2-4), 409-415
- https://doi.org/10.1093/rpd/ncq408
Abstract
Silicon detectors are being studied as microdosemeters since they can provide sensitive volumes of micrometric dimensions. They can be applied for assessing single-event effects in electronic instrumentation exposed to complex fields around high-energy accelerators or in space missions. When coupled to tissue-equivalent converters, they can be used for measuring the quality of radiation therapy beams or for dosimetry. The use of micrometric volumes avoids the contribution of wall effects to the measured spectra. Further advantages of such detectors are their compactness, cheapness, transportability and a low sensitivity to vibrations. The following problems need to be solved when silicon devices are used for microdosimetry: (i) the sensitive volume has to be confined in a region of well-known dimensions; (ii) the electric noise limits the minimum detectable energy; (iii) corrections for tissue-equivalency should be made; (iv) corrections for shape equivalency should be made when referring to a spherical simulated site of tissue; (v) the angular response should be evaluated carefully; (vi) the efficiency of a single detector of micrometric dimensions is very poor and detector arrays should be considered. Several devices have been proposed as silicon microdosemeters, based on different technologies (telescope detectors, silicon on insulator detectors and arrays of cylindrical p–n junctions with internal amplification), in order to satisfy the issues mentioned above.Keywords
This publication has 16 references indexed in Scilit:
- A pixelated silicon telescope for solid state microdosimetryRadiation Measurements, 2008
- A solid state microdosimeter based on a monolithic silicon telescopeRadiation Protection Dosimetry, 2006
- A feasibility study of a solid-state microdosimeterApplied Radiation and Isotopes, 2005
- A new silicon detector for microdosimetry applications in proton therapyIEEE Transactions on Nuclear Science, 2000
- Performance of silicon microdosimetry detectors in boron neutron capture therapy.Radiation Research, 1999
- Use of photodiode in microdosimetry and evaluation of effective quality factorNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998
- Simultaneous macro and micro dosimetry with MOSFETsIEEE Transactions on Nuclear Science, 1996
- Performance of Pin Photodiode in MicrodosimetryHealth Physics, 1994
- Microdosimetric Counters Based on Semiconductor DetectorsRadiation Protection Dosimetry, 1989
- A Comparison of Microdosimetric Measurements with Spherical Proportional Counters and Solid-State DetectorsRadiation Research, 1980