Title :
Energy compensation characteristics of Cu and Sn on low cost Si photodiodes for γ(ℵ) dosimetry applications
Author :
Tseng, Hsun-Hua ; Chang, Hwei-Fu
Author_Institution :
Inst. of Nucl. Eng. Res., CAEC, Lung-Tan, Taiwan
fDate :
10/1/1992 12:00:00 AM
Abstract :
To convert a low-cost Si photodiode into a tissue equivalent γ(χ) ray detector, the photon attenuation characteristics of Cu and Sn on the photodiode were studied. A simple analytical model fits the experimental results. Based on the model, the energy response of the Si photodiode is adjusted to tissue equivalence within the energy range between 0.06 and 1.25 MeV using the Cu/Sn filters. A prototype detector was designed and shown to be well behaved with regard to compliance with ANSI standards
Keywords :
copper; dosimeters; gamma-ray detection and measurement; photodiodes; semiconductor counters; tin; ANSI standards; Cu; Sn; dosimetry applications; energy compensation; energy response; low cost Si photodiodes; low-cost Si photodiode; photon attenuation; tissue equivalent γ(χ) ray detector; ANSI standards; Analytical models; Attenuation; Costs; Filters; Gamma ray detection; Gamma ray detectors; Photodiodes; Prototypes; Tin;
Journal_Title :
Nuclear Science, IEEE Transactions on
