Multiplicity sorter for shift-register coincidence electronics

Abstract

A multiplicity sorter for the latest Los Alamos National Laboratory version of shift-register coincidence electronics is described. The multiplicity information taken from the coincidence-gate up-down counter is decoded and gated onto the output lines by prompt real-plus-accidental (R+A) and delayed accidental (A) strobes. Multiplicities of 0-7 and >B are sorted for both the P+A and A aates. I.

Recent developments in multiplicity counting hardware at Los Alamos

“…Three variables exist in the gen-been describedin detail. [5,6] Briefly, coincidence neucons are eration of coincidence neutrons: sample mass, (ct,n) interac-emitted from a sample into a detector. The neutronsbounce tions, and multiplication, about in the polyethylene of the detector, lose energy, and are A classical limitation of coincidence counting assay has absorbedby 3Hetubes, cadmium, orpolyethylene in the detecbeen that only two independent quantities are measured: total tct.…”