Chitkara Open Access Journals - Blog

Characterizing a Mini Gamma Detector


E. Márquez-Quintos, E. Moreno-Barbosa, J. E. Espinosa, Benito de Celis Alonso and R. Palomino MerinoFaculty of Mathematical Physical Sciences, Benemérita Universidad Autónoma de Puebla, C.P. 72570, Puebla, Mexico

Margarita Amaro ArandaFaculty of Electronics Sciences, Benemérita Universidad Autónoma de Puebla, C.P. 72570, Puebla, Mexico


Gamma ray, Crystal Scintillator, Spectrophotometer, Calibration


There are several types of gamma radiation detectors, which have different characteristics depending on its use. We designed and instrumented a gamma detector for low energies of a small and portable size to obtain spectrum from radioactive sources and from that analyze each spectrum. This instrument basically consists of a scintillator crystal coupled to a SiPM this in turn coupled to a PCB card designed with capacitors and resistors for a better signal, a voltage source of 29 volts. For signal acquisition the system must be connected to an oscilloscope this in turn is controlled by a script developed in Python. For the calibration radioactive isotopes with the same dimensions were used, caesium-137 (Cs-137), cobalto-60 (Co-60), sodium-22 (Na-22) and manganese-54 (Mn-54) as gamma ray emission.



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