Chris Benson et al 2004 Phys. Med. Biol. 49 3145 doi:10.1088/0031-9155/49/14/009
Chris Benson1,5, Robert A Price2, Jon Silvie3, Aleksandar Jaksic4 and Malcolm J Joyce1
Show affiliationsThe results of a recent study on the limiting uncertainties in the measurement of photon radiation dose with MOSFET dosimeters are reported. The statistical uncertainty in dose measurement from a single device has been measured before and after irradiation. The resulting increase in 1/f noise with radiation dose has been investigated via various analytical models. The limit of uncertainty in the ubiquitous linear trend of threshold voltage with dose has been measured and compared to two nonlinear models. Inter-device uncertainty has been investigated in a group of 40 devices, and preliminary evidence for kurtosis and skewness in the distributions for devices without external bias has been observed.
Issue 14 (21 July 2004)
Received 12 January 2004, in final form 26 May 2004
Published 28 June 2004
Chris Benson et al 2004 Phys. Med. Biol. 49 3145
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