Release of 137Cs into the Gas Phase during the Interaction of 137Cs Compounds with Molten Lead

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2024-04-23 DOI:10.1134/s1066362224010090

V. V. Kulemin, I. A. Rumer, Yu. M. Nevolin, E. P. Krasavina, S. A. Kulyukhin

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Abstract

The release of ¹³⁷Cs into an Ar flow during the reaction of ¹³⁷CsI and ¹³⁷CsOH–¹³⁷Cs₂CO₃ with molten lead at a temperature of ~852 K was studied. It was determined that during the heating of Pb⁰ with ¹³⁷CsI, ¹³⁷CsOH–¹³⁷Cs₂CO₃, and ¹³⁷CsI–¹³⁷CsOH–¹³⁷Cs₂CO₃ from 2 to 8% of ¹³⁷Cs can pass into the gas flow. Based on the distribution of ¹³⁷Cs among the elements of the gas purification system, it was concluded that the chemical and disperse composition of the compounds containing ¹³⁷Cs in the gas phase is fairly heterogeneous. Volatile ¹³⁷Cs compounds formed on heating ¹³⁷CsI, ¹³⁷CsOH–¹³⁷Cs₂CO₃, and ¹³⁷CsI–¹³⁷CsOH–¹³⁷Cs₂CO₃ with Pb⁰ in a gas flow at ~852 K can contain both charged aerosols and aerosols without an electric charge.

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137Cs 化合物与熔融铅相互作用过程中 137Cs 释放到气相中的情况

摘要研究了 137CsI 和 137CsOH-137Cs2CO3 与温度为 ~852 K 的熔铅反应过程中 137Cs 在氩流中的释放情况。结果表明，在用 137CsI、137CsOH-137Cs2CO3 和 137CsI-137CsOH-137Cs2CO3 加热 Pb0 的过程中，有 2% 至 8% 的 137Cs 可以进入气流。根据 137Cs 在气体净化系统各元素中的分布情况，可以得出结论：气相中含 137Cs 的化合物的化学成分和分散成分相当不均匀。在 ~852 K 的气流中加热 137CsI、137CsOH-137Cs2CO3 和 137CsI-137CsOH-137Cs2CO3 与 Pb0 时形成的挥发性 137Cs 化合物既可能含有带电荷的气溶胶，也可能含有不带电荷的气溶胶。

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来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.