Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2005-07-15
2009-11-17
Berman, Jack I (Department: 2881)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
C250S328000, C250S369000, C250S362000, C250S366000, C250S363010, C250S252100, C250S303000, C250S393000, C436S057000, C436S100000, C436S181000, C422S159000, C252S301160, C252S301170, C588S020000, C588S307000
Reexamination Certificate
active
07619222
ABSTRACT:
The present invention relates to an automatic radioactivity analyzer of mixed liquid beta emitter which comprises: a sample preparation part (1, 2, 3, 4, 5, 6, and7) for extracting a liquid sample from liquid-phase radioactive nuclear wastes; a sample injection part (9and10), 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.
REFERENCES:
patent: 5512753 (1996-04-01), Thomson et al.
patent: 6791093 (2004-09-01), Caldwell et al.
patent: 7427761 (2008-09-01), Ohtaka et al.
Kim Chang-Kyu
Kim Cheol-Su
Rho Byung-Hwan
Berman Jack I
Korea Institute of Nuclear Safety
McDermott Will & Emery LLP
Sahu Meenakshi S
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