FORMULATION FOR THE PREPARATION OF A BETA-SCINTILLATING PLASTIC DEVICE

A new technique for the preparation of a beta scintillating plastic fr om a resin doped with fluorescent material is presented. The making of the plastic is easy, quick, and does not require any special laborato ry equipment. This formulation for a polymerization kit enables to obt ain a beta ternary plastic scintillator device with the shape and the size required by the user. The plastic can be either cast into a mould or machined to obtain a device, ready to be used as a nuclear detecto r in experiments involving beta emitters. It can be used for making ra diochromatography cells, capillary electrophoresis devices, etc. The c apability of the plastic has been tested in a diffusion experiment: th e self-diffusion coefficient of labelled chloride Cl-36(-) in an aqueo us electrolyte solution of 0.1 M sodium chloride has been measured by the closed capillary technique. The result is in good agreement with p ublished values.