Abstract

This paper describes analysis of the fallout from the 19th Chinese nuclear explosion test. 1. The analysis identified the following 16 nuclides using the radioactive decay method: 95Zr, 95Nb, 97Zr, 97Nb, 99Mo, 99mTc, 131I, 132Te, 1321, 133I, 137Cs, 140La, 143Ce, 147Nd, 237U and 239Np.2. Assessment of a baby's thyroid dose by radioiodine based on this nuclear explosion test was carried out. Culculated dose is 4.5 mrem/yr which is nearly one-third of radioiodine release guideline for a light-water-cooled nuclear power station.3. Nuclide concentration, (number of nuclides)/(nuclear fission yield), going back to predicted fission time was calculated. Assuming the fast fission of 239Pu, the concentration curves of each nuclide crossed at approximately the same point.The reported fission time by ERDA of U.S.A. fell into the authors' speculated fission time region which was calculated from the time dependent nuclide concentration curves mentioned above.4. The 237U was identified from the decay curves of 239Np photopeak (278 keV) and of multiplet of 239Np and 237U (207 keV). The estimated atomic ratio of 239Np: 237U at fission time was 28: 1.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.