Comparison of radionuclide ratios in atmospheric nuclear explosions and nuclear releases from Chernobyl and Fukushima seen in gamma ray spectrometry

Title: Comparison of radionuclide ratios in atmospheric nuclear explosions and nuclear releases from Chernobyl and Fukushima seen in gamma ray spectrometry

Author: J. I. Friese, R. F. Kephart, D. D. Lucas

Reference: Journal of Radioanalytical and Nuclear Chemistry , May 2013, Volume 296, Issue 2, pp 899-903

DOI: 10.1007/s10967-012-2213-0

Keywords : CTBT, Chernobyl, Fukushima, Radionuclide monitoring, Gamma spectroscopy

Abstract: The Comprehensive Nuclear Test Ban Treaty has remote radionuclide monitoring followed by an On Site Inspection (OSI) to clarify the nature of a suspect event as part of its verification regime. An important aspect of radionuclide measurements on site is the discrimination of other potential sources of similar radionuclides such as reactor accidents or medical isotope production. The Chernobyl and Fukushima nuclear reactor disasters offer two different reactor source term environmental inputs that can be compared against historical measurements of nuclear explosions. The comparison of whole-sample gamma spectrometry measurements from these three events and the analysis of similarities and differences are presented. This analysis is a step toward confirming what is needed for measurements during an OSI under the auspices of the Comprehensive Test Ban Treaty.

ＵＲＬ：http://link.springer.com/article/10.1007/s10967-012-2213-0

Distributions of 137Cs and 210Pb in moss collected from Belarus and Slovakia

• Title: Distributions of ¹³⁷Cs and ²¹⁰Pb in moss collected from Belarus and Slovakia

Author: Aleksiayenak, Yu.V. / Frontasyeva, M.V. / Florek, M. / Sykora, I. / Holy, K. / Masarik, J. / Brestakova, L. / (…) / Ramatlhape, K.I.

Reference: Journal of Environmental Radioactivity, 117, p.19-24, Mar 2013    

doi: 10.1016/j.jenvrad.2012.01.018

Keywords: ¹³⁷Cs and ²¹⁰Pb in moss; 137Cs in surface air; Chernobyl fallout; Gamma spectroscopy

Abstract: ► Belarus moss was used as a biological indicator of ¹³⁷Cs and ²¹⁰Pb. ► Comparison with concentration of ¹³⁷Cs and ²¹⁰Pb in moss from Slovakia. ► Moss samples reflect the original distribution of Chernobyl fallout in Belarus. ► Regular decrease of the annual average activity of ¹³⁷Cs in surface air in Slovakia. ► Median concentration of ²¹⁰Pb in moss from Belarus is 2.3 times lower than in Slovakia.

URL: http://www.sciencedirect.com/science/article/pii/S0265931X1200029X