VERTICAL MIGRATION OF RADIONUCLIDES IN THE VICINITY OF THE CHERNOBYL CONFINEMENT SHELTER
VERTICAL MIGRATION OF RADIONUCLIDES IN THE VICINITY OF THE CHERNOBYL CONFINEMENT SHELTER
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DOI：
10.1097/hp.0b013e3182166472
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发表时间：
2011-10-01
期刊：
影响因子：
2.2
通讯作者：
Marra, James C.
中科院分区：
文献类型：
--
作者：
Bondarkov, Mikhail D.;Zheltonozhsky, Viktor A.;Marra, James C.
在红森林实验场地区的切尔诺贝利核电站5公里区域内，已完成了对核放射性核素垂直迁移的研究。测量是由γ谱法使用高纯度锗（HPGe）铍窗口探测器。钚的α放射性同位素是通过测量其铀子体的X射线来确定的。Co-60，Cs-134，Cs-137，Eu-154，Eu-155和Am-241的存在下到30厘米的深度的所有土壤层中进行了观察。Cs-137和Am-241的存在下，在该地区含有自形土壤的深度为60厘米。此外，还发现试验场的上层土壤含有Am-243和（243）Nm。在过去10年中，实验场土壤中Am-241/Cs-137的比率增加了3.4倍，几乎是仅根据放射性衰变预测的两倍。这可能是由于ChNPP密闭室散发的“新鲜”沉降物造成的。健康物理学101（4）：362-367; 2011
Studies of vertical migration of Chernobyl-origin radionuclides in the 5-km zone of the Chernobyl Nuclear Power Plant (ChNPP) in the area of the Red Forest experimental site were completed. Measurements were made by gamma spectrometric methods using high purity germanium (HPGe) detectors with beryllium windows. Alpha-emitting isotopes of plutonium were determined by the measurement of the x-rays from their uranium progeny. The presence of Co-60, Cs-134,Cs-137, Eu-154,Eu-155, and Am-241 in all soil layers down to a depth of 30 cm was observed. The presence of Cs-137 and Am-241 was noted in the area containing automorphous soils to a depth of 60 cm. In addition, the upper soil layers at the test site were found to contain Am-243 and (243)Nm. Over the past 10 years, the Am-241/Cs-137 ratio in soil at the experimental site has increased by a factor of 3.4, nearly twice as much as would be predicted based solely on radioactive decay. This may be due to "fresh" fallout emanating from the ChNPP Confinement Shelter. Health Phys. 101(4):362-367; 2011