Circuit diagram for coincidence counting circuit

[houlahound]

Dr Google has failed me, lots of descriptions on how its used but no circuit diagrams and how it works. Seems like a fascinating technique.

Anyone got a link to a circuit diagram with explanation.

Are these things available as an off the shelf black box type of deal?

 

[Vanadium 50]

Usually the way this accomplished is by having one circuit identifying coincidences and another doing the counting.

For example, for coincidence: http://teledynelecroy.com/lrs/dsheets/365al.htm and for counting http://www.caen.it/jsp/Template2/CaenProd.jsp?parent=12&idmod=299