Gamma counter apparatus

Details Gamma counter apparatus Gamma counter apparatus

G - Physics

01

V

358/19

G01V 5/00 (2006.01) G01T 7/08 (2006.01)

Patent

CA 1076716

U.S. SN 716,313 Filed August 20, 1976 7-US GAMMA COUNTER APPARATUS Abstract of the Disclosure A gamma activity counter apparatus for use in automated radioimmunoassay systems including a scintillator counter which has two scintillator crystal-photomultiplier tube assemblies removably contained within a lead radiation shield. Each crystal has formed in it a sample receiving zone, each zone communicating with vertical bores formed in the radiation shield, so that a lifting means can lift sample carriers disposed beneath and in alignment with the sample receiving zones into the zones for gamma activity counting. The lift means is so designed that for each counting period, a pair of sample carriers, separated from each other by an even number of sample carrier spaces, is lifted into the sample receiving zones for simul- taneous counting, the sample carriers being contained in holders that are continually advanced over the lift means in increments of two sample carrier spaces per increment. The sample carriers, arranged in a specified order in the holders, are counted out of order and this counting data is fed to a logic means in which the data is re-ordered, and this properly re-ordered data is fed to a data printing means.

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