Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving virus or bacteriophage
Patent
1993-10-12
1996-07-02
Saunders, David
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving virus or bacteriophage
250303, 424 111, 435 6, 435 71, 435 72, 435 722, 435 723, 435 731, 435 732, 435 736, 436 56, 436 57, 436504, 436542, 436545, 436804, 436807, C12Q 168, G01N 2300, G01N 33534, G01T 100
Patent
active
055321224
ABSTRACT:
For isotopes decaying by capture of an inner shell electron by the nucleus, coincident emission of X-ray and gamma photons may occur. The X-ray results from the drop of an outer shell electron to fill the S shell. The gamma results from the transition of the excited daughter nucleus to a lower energy state. The invention disclosed is a Coincident Gamma and X-ray Detector (CGXD) which achieves extraordinary background rejection by a synergistic combination of coincident counting and other background suppression measures. Whereas the background registered by single gamma counters is of the order of 20-40 counts per minute, a CGXD optimized for the electron capture radioisotope I.sup.125 has a background of about one count per day.
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BioTraces, Inc.
Gollin Michael A.
Saunders David
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