Behaviour of 222Rnat cryogenic temperatures
Behaviour of 222Rnat cryogenic temperatures
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222Rnat 低温行为
DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
G. Zuzel
中科院分区:
文献类型:
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作者:
S. Lindemann;H. Simgen;G. Zuzel
The behaviour of radon in a cryogenic environment is still not well known. Therefore, measured radon emanation rates at room temperature cannot be translated directly to cryogenic conditions. In this work we present a table‐top experiment that provides a direct way of determining the behaviour of 222 Rn in cryogenic argon and helium at liquid argon temperature. We observe an increased emanation rate of 222 Rn atoms to liquid argon compared to the rate observed to helium at room temperature. We also find that 222 Rn atoms stick to cold metal surfaces when emanated to helium at liquid argon temperature but partly distribute in the liquid when emanated to cryogenic argon. Concluding, we give possible interpretations of the observations.