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Method To Measure Indoor Radon Concentration In An Open Volume With Geiger-Mueller Counters: Analysis From First Principles, Mark P. Silverman
Method To Measure Indoor Radon Concentration In An Open Volume With Geiger-Mueller Counters: Analysis From First Principles, Mark P. Silverman
Faculty Scholarship
A simple method employing a pair of pancake-style Geiger-Mueller (GM) counters for quantitative measurement of radon activity concentration (activity per unit volume) is described and demonstrated. The use of two GM counters, together with the basic theory derived in this paper, permit the detection of alpha particles from decay of 222Rn and progeny ( 218 Po , 214 Po ) and the conversion of the alpha count rate into a radon concentration. A unique feature of this method, in comparison with standard methodologies to measure radon concentration, is the absence of a fixed control volume. Advantages afforded by the reported …
Method To Measure Indoor Radon Concentration In An Open Volume With Geiger-Mueller Counters: Analysis From First Principles, Mark P. Silverman
Method To Measure Indoor Radon Concentration In An Open Volume With Geiger-Mueller Counters: Analysis From First Principles, Mark P. Silverman
Faculty Scholarship
A simple method employing a pair of pancake-style Geiger-Mueller (GM) counters for quantitative measurement of radon activity concentration (activity per unit volume) is described and demonstrated. The use of two GM counters, together with the basic theory derived in this paper, permit the detection of alpha particles from decay of 222Rn and progeny ( 218Po , 214 Po ) and the conversion of the alpha count rate into a radon concentration. A unique feature of this method, in comparison with standard methodologies to measure radon concentration, is the absence of a fixed control volume. Advantages afforded by the reported GM …
Search For Anomalies In The Decay Of Radioactive Mn-54 [Post-Print], Mark P. Silverman
Search For Anomalies In The Decay Of Radioactive Mn-54 [Post-Print], Mark P. Silverman
Faculty Scholarship
Recent papers have reported that 54Mn, which decays by electron capture (a weak nuclear interaction) with half-life ~312 days, is influenced by solar activity. Should this actually occur, new physics would be needed to explain it. This paper reports results of an analysis of 54Mn activity measured over a time interval of ~3.6 half-lives. If standard nuclear physics applies, the logarithmic residuals of 54Mn activities should form a stationary set of independent random variables whose statistics are determined solely by a constant decay rate λ and initial mean count μ. Analysis of the time-variation, autocorrelation, and power spectra of …