Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1992-11-09
1994-11-22
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250328, G01T 1204
Patent
active
053671708
ABSTRACT:
A method and a liquid scintillation counter for measuring a sample, a mixture of the specimen to be analysed and a scintillator, in a liquid scintillation counter where the sample (14) is measured with two photo multiplier tubes (23, 24) situated on different sides of the sample. The photo multiplier tubes situated on different sides of the sample operate in coincidence. Asymmetric samples are measured in such a way that the counting efficiency is measured with the photo multiplier tubes (23, 24) operating in coincidence ad calculated using the amount of coincidence pulses, whereas the amplitude and the pulse height distribution are measured only with one photo multiplier tube (23 or 24).
REFERENCES:
patent: 5171997 (1992-12-01), Lehtinen et al.
Oikari Timo
Stark Tuula
Webb Stuart
Yrjonen Tapio
Hannaher Constantine
Wallac Oy
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