proportional counter

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pro·por·tion·al count·er

a Geiger-Müller counter operating in the voltage range and under conditions in which pulse height is proportional to the energy of the particles or rays being counted, thus making discrimination between particles or rays of different energies possible.
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References in periodicals archive ?
In total, 15 systems (11 different instruments from six manufacturers) were tested: 11 benchtop instruments (seven Si-PIN, one SiLi and three proportional counters) and four less expensive, portable machines (all Si-PIN).
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