1,563 research outputs found
The stopping rate of negative cosmic-ray muons near sea level
A production rate of 0.065 + or - 0.003 Ar-37 atom/kg min of K-39 at 2-mwe depth below sea level was measured by sweeping argon from potassium solutions. This rate is unaffected by surrounding the solution by paraffin and is attributed to negative muon captures and the electromagnetic interaction of fast muons, and not to nucleonic cosmic ray component. The Ar-37 yield from K-39 by the stopping of negative muons in a muon beam of a synchrocyclotron was measured to be 8.5 + or - 1.7%. The stopping rate of negative cosmic ray muons at 2-mwe depth below sea level from these measurements and an estimated 17% electromagnetic production is 0.63 + or - 0.13 muon(-)/kg min. Previous measurements on the muon stopping rate vary by a factor of 5. Our value is slightly higher but is consistent with two previous high values. The sensitivity of the Ar-37 radiochemical method for the detection of muons is considerably higher than that of the previous radiochemical methods and could be used to measure the negative muon capture rates at greater depths
The AS-76 interlaboratory experiment on the alpha spectrometric determination of Pu-238. Part II: Collection and evaluation of representative spectra
THE AS-76 interlaboratory experiment on the alpha spectrometric determination of Pu-238. Part I: Performance and results
Statistische Ueberlegungen zur Bilanzierung in einem Tritiumlabor: Transfers vom Lager zum Experiment und zurueck ueber die Reinigung
The IDA-80 measurement evaluation programme on mass spectrometric isotope dilution analysis of uranium and plutonium. Vol.I: Design and results
The IDA-80 measurement evaluation programme on mass spectrometric isotope dilution analysis of uranium and plutonium. Volume III: Compilation of evaluation data
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