How does rate of radioactive decay depend on temperature?
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Onnes measured the rate of decay of radium at room temperature and after being cooled in liquid hydrogen. Their conclusion was that the decay rate was entirely independent of temperature. Since then, numerous investigations have shown that alpha and beta decays are not influenced by external conditions such as temperature, air pressure, or the surrounding material. By contrast, decays that proceed by electron capture are known to be susceptible to their environment and so have been placed in a different category.
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