2011•Hedianzixue yu tance jishuRequires access

The Methods of Measuring Radioactive Xenon Isotopes Activity for CTBT Noble Xenon Samples

Xin Zhang, Ctbt Beijing

Abstract

The radioactive xenon isotopes(~(131m)Xe,~(133)Xe,~(133m)Xe,~(135)Xe) are some key important detecting objects for the Comprehensive Nuclear-Test-Ban Treaty(CTBT) monitoring.Currently the most important difficulties are xenon sampling,puring and radioactive xenon isotopes measuring.It describes in detail the methods of HPGeγ spectrometer and β-γ coincidence method measuring radioactive xenon isotopes.The Lab simultaneously adopted two methods to measure the noble gas sample spiked ~(133)Xe,and the result difference of two methods is 8%.In the end,the method of improving radioactive xenon isotopes measuring accuracy is put forward.

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Key concepts: Xenon, Isotopes of xenon, Noble gas, Isotope, Radiochemistry, Radionuclide, Nuclear physics, Chemistry