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Scintillation counters use special materials called scintillators to convert ionizing radiation into light, which is then amplified into a measurable signal using a photomultiplier tube or other sensor. This allows scintillation counters to achieve greater sensitivity than conventional ion chamber and Geiger-Muller detectors and to measure the energy of individual particles. Though the principle of the scintillation counter was developed in 1944 during the Manhattan Project, the practical, portable scintillation counter was invented in 1949 in Winnipeg, Manitoba by University of Manitoba physics professor Dr. Robert Pringle. The first commercial units - including the Model 1002 Gammascint - were produced in the 1950s by Halross Instruments Corporation - later the Western Division of Canadian Aviation Electronics (CAE) Ltd.

0:00 Introduction
0:34 Ion Chamber and Geiger-Muller Detectors
2:16 Sponsor Segment: RadiaCode
5:42 The Spinthariscope
6:32 Samuel Curran Invents the Scintillation Counter
7:12 Photomultiplier Tubes
8:44 Types of Scintillation Materials
10:36 Dr. Robert Pringle and George Brownell
12:17 Halross Instruments Model 939
12:52 Nuclear Enterprises Ltd.
13:43 Canadian Aviation Electronics Ltd.
14:35 CAE Radiation Instruments
15:28 Gammascint - External Features
16:28 Gammascint - Interior Features
19:14 Outro

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SOURCES:

http://national-radiation-instrument-...

https://www.cae.com/about-cae/history...

https://www.orau.org/health-physics-m...

https://www.google.com/url?sa=t&sourc...
https://physicsopenlab.org/2017/08/10...

https://www.mhs.mb.ca/docs/people/bro...