Polymer composition equivalent to the biological tissue, use of this composition in the manufacture of a proportional counter equivalent to the biological tissue and meter thus manufactured.

摘要

The present invention relates to a polymer composition equivalent to biological tissue and having a very high resistivity. The invention also relates to the use of this composition in the manufacture of the cathode (3 ") of a proportional counter equivalent to the biological tissue, and a counter comprising such a cathode. BR/ This composition is characterized in that it is formed from a polyamide, polypropylene, epolene and carbon black and in that it has a mass atomic composition such that hydrogen is between 6 and 14%, the carbon between 55.5 and 86.5%, nitrogen between 2.5 and 4.5%, oxygen between 1.5 and 7.5%, calcium between 1.5 and 9.5 about 1% and the fluorine between about 1.9%, the sum of the amount of carbon, oxygen and fluorine in the total composition being between 72 and about 90%. / P