Photodiode Gamma ray detector

in measurement by DP | 1 comment


Alan over at posted an article describing how he designed and built his gamma ray detector using a photodiode:

Gamma photons interacting with cheap photodiodes produce small current pulses which are easily amplified and allow detection of individual photon events. This offers the possibility of cheap, small and rugged radiation detectors of reasonable sensitivity. While not as sensitive as larger GM-tube detectors, this solid state device is still quite useful for determining if something is radioactive enough to be interesting/concerning.

Via Electronics Lab.

This entry was posted in measurement and tagged , .


  1. Josh says:

    Also may be of interest!

    Maxim App 2236 note: “Gamma-Photon Radiation Detector”

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