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Measurement of airborne 131I, 134Cs, and 137Cs nuclides due to the Fukushima reactors accident in air particulate in Milan (Italy)
Airborne radioactivity, Fukushima accident, 131I, 137Cs and 134Cs
2011/9/5
After the earthquake and the tsunami occurred in Japan on 11th March 2011, four of the Fukushima reactors had released in air a large amount of radioactive isotopes that had been diffused all over the...
就地γ谱仪峰谷比法测量137Cs深度分布
就地γ谱仪 137Cs 深度分布 峰谷比法
2011/8/24
研究就地γ谱仪测量地表层137Cs深度分布的峰谷比法，建立了就地γ能谱峰谷比数值计算公式和实验剥谱方法。理论计算表明，峰谷比随137Cs张弛深度的变化十分灵敏，土壤密度误差对峰谷比有一定影响，但变化不大时，对峰谷比法结果影响可忽略。野外验证实验显示，峰谷比法相对于样品实验室分析结果的最大相对偏差为31%，表明峰谷比法是可行的，所建立数值计算公式、实验剥谱方法是正确的。
This paper presents results of 137Cs concentration measured from a guava tree cultivated after the first decontamination work of one of the sites where the worst Brazilian radiological accident occurr...