| counter tube designed to detect fast neutrons by means of ionization produced by the recoil nuclei resulting from collisions of fast neutrons with nuclei of low atomic number
Note 1 to entry: This counter is called a proton recoil counter tube when the initial ionization results from recoil protons. Note 2 to entry: This entry was numbered 394-29-06 in IEC 60050-394:2007.
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