Physics Commons^™

Analysis Of Residence Time In The Measurement Of Radon Activity By Passive Diffusion In An Open Volume: A Micro-Statistical Approach, Mark P. Silverman

Faculty Scholarship

Residence time in a flow measurement of radioactivity is the time spent by a pre-determined quantity of radioactive sample in the flow cell. In a recent report of the measurement of indoor radon by passive diffusion in an open volume (i.e. no flow cell or control volume), the concept of residence time was generalized to apply to measurement conditions with random, rather than directed, flow. The generalization, leading to a quantity r ∆t , involved use of a) a phenomenological alpha-particle range function to calculate the effective detection volume, and b) a phenomenological description of diffusion by Fick’s law to …