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Absence of 232,230,228Th enhancement decay by ultrasound exposure
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Jean Aupiais
Veröffentlicht/Copyright:
28. Januar 2013
Abstract
We report on our attempt to reproduce the 228Th decay enhancement under the effect of power ultrasound claimed recently in the literature. The evolution of natural thorium isotopic composition (232Th, 230Th, and 228Th) in various aqueous solutions submitted to 20 kHz power ultrasound (0.18 W mL−1, 20 ºC, Ar). The radioactivities of the three isotopes of thorium (232Th, 230Th and 228Th) were followed by α liquid scintillation counting technique. No change was detected during ultrasonic irradiation. Our results demonstrate that under the studied conditions the rate of Th isotopes radioactive decay is not modified under the effect of ultrasound on aqueous solutions of thorium salts.
Published Online: 2013-01-28
Published in Print: 2013-05
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Artikel in diesem Heft
- Absence of 232,230,228Th enhancement decay by ultrasound exposure
- Complexation of Cm(III) and Eu(III) with 2,6-bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine and 2-bromohexanoic acid studied by time-resolved laser fluorescence spectroscopy
- Americium, curium and neodymium analysis in ECRIX-H irradiated pellet: sample preparation for TIMS measurements
- Co-extraction and stripping behavior of trivalent actinides and fission products in N,N-di-2-ethylhexyl-N´,N´-dioctyl-diglycolamide
- Mass spectrometric characterization and quantification of Pu(VI) hydrolysis products
- Effects of aging on PuO2·xH2O particle size in alkaline solution
- Redox behavior of Tc(VII)/Tc(IV) under various reducing conditions in 0.1 M NaCl solutions
- Cyclotron production of 44Sc for clinical application
- Proton irradiation parameters and chemical separation procedure for the bulk production of high-specific-activity 186gRe using WO3 targets
