Performance of resistive plate counter with non-ozone depletion freon

The standard gas mixture (Ar/isoC/sub 4/H/sub 10//CF/sub 3/Br) used for RPCs contains several percent of CF/sub 3/Br (Haron1301) as quenching agent. CF/sub 3/Br is known to destroy the atmospheric ozone layer. For this reason its use is discouraged, and prohibited by law in the near future. C/sub 2/F/sub 6/ (FC116) and C/sub 2/H/sub 2/F/sub 4/ (HFC134A) seem to be an ideal candidate from an environment point of view since its ozone depletion potential is very low. We present the results of a test performance on RPC (glass) operating with non-ozone depletion freon gas and butane-silver.

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