Gas mixture for filling a proportional counter equivalent to the biological tissue and proportional counter equivalent to the biological tissue filled with this gas mixture.

摘要

The present invention relates to a gas mixture for filling proportional meters equivalent to the biological tissue and a proportional counter filled with this gas mixture. BR/ The object of the invention is to develop a mixture of gas equivalent to biological tissue, having a high gain and stable over time. BR/ This object is achieved with the aid of a gas mixture (7) comprising between 3 and 4% by weight of nitrogen, between 46 and 66% by weight of propane and between 30 and 50% by weight. weight of a mixture comprising between 5 and 80% by weight of CO2 and between 20 and 95% by weight of argon. / P