Zener diodes for gamma-ray radiation dosimetry

Journal Article · Sat Apr 01 04:00:00 EST 1995 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.372130· OSTI ID:64624

Nakamura, Shigeki; Okamoto, Shinichi ^[1]

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1. Univ. of Osaka Prefecture, Sakai (Japan). Research Institute for Advanced Science and Technology

The fundamental properties of Zener diodes and junction field-effect transistors have been studied to use them as a relative dose monitor or a radiation-damage monitor. The response observed at liquid nitrogen temperature, i.e., radiation-induced change in the breakdown voltage of the Zener diode, or change in the breakdown voltage of the pn junction between the gate and the channel (or between the substrate gate and the channel) of the junction field-effect transistor as a function of dose, has shown good linearity. The diode of Toshiba 05Z18 has been found to be useful for doses between 1 and 100 MGy with the fading of response less than 10% for 100 h after irradiation. On the other hand, the junction field-effect transistors of Mitsubishi 2SK33 has proved useful in the region between 0.1 and 10 MGy with the build-up of responses less than 5% for 100 h. The response of both the junction field-effect transistor and the Zener diode has shown a reproducibility within {+-}5. For fast readout, a simple system consisting essentially of a constant-current source together with a digital voltmeter has been constructed. For practical application, the devices from which soldered leads are taken off can be used simply to measure relative doses in various materials.

• OSTI ID: 64624
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 2 Vol. 42; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
FIELD EFFECT TRANSISTORS
GAMMA DOSIMETRY
IONIZING RADIATIONS
JUNCTION DIODES
JUNCTION TRANSISTORS
PERFORMANCE
PHYSICAL RADIATION EFFECTS
RADIATION DOSES
READOUT SYSTEMS