Patent ID: 7619222

Claim:
An automatic radioactivity analyzer of mixed liquid beta emitter, comprising: a sample preparation part ( 1 , 2 , 3 , 4 , 5 , 6 , and 7 ) for extracting a liquid sample from liquid-phase radioactive nuclear wastes; a sample injection part ( 9 and 10 ), including a sample transportation part for transporting a bottled sample to a radioactivity detection part to perform measurement; the radioactivity detection part ( 11 ) including two photon multiplier tubes; an exterior gamma-ray source injection part ( 12 ) for compensating for measurement efficiency according to quenching effects; a signal processing part ( 13 ), including a pre-amplifier circuit ( 14 ), a high-voltage generator circuit ( 15 ), an analogue-to-digital converter circuit ( 21 ), and a digital signal processor (DSP) ( 24 ), for generating beta spectrums by the aid of a fast coincidence counter ( 20 ) and a multi-channel analyzer ( 22 ); a main control PC ( 25 ) and a graphic user interface (GUI) program ( 29 ) for remotely automatically measuring the sample and analyzing the beta emitter; and an Ethernet communication part ( 28 ) for performing the remote-control of the analyzer and long-range reception/transmission of the measured data.