Quantitative Analysis of Radioactive Noble Gases with a SiLi Detector.

摘要

A system incorporating a cooled SiLi detector is examined for possible use in the quantitative analysis of radioactive noble gases. In the system, the detector is maintained at liquid nitrogen temperature in a high vaccum environment and cryogenic pumping is used to transfer and isolate gas samples. The gas used in the evaluation of the system is the xenon radionuclide Xe131m. Experimental data and theoretical considerations are used to establish the relevant characteristics of the system. Extrapolation of data indicates that in a 10 hour counting time, a significance level of 5% could be established for a Xe131m sample activity of about 25 DPM by internal conversion electron detection or about 90 DPM by x-ray spectroscopy.