Abstract
Ceramic chips of beryllium oxide were exposed to high energy heavy ion beams (He, C, Ne, Ar, and Fe) and the glow curves were analysed. Two comparable peaks at around 203°C and 355°C were found and each peak height showed a different LET dependence. The low temperature peak height (I L ) increased remarkably with LET to about 10 keV.μm -1 and the relative efficiency normalised to that of 137 Cs γ rays took a maximum factor of 1.3. The high temperature peak height (I H ) decreased almost linearly with the logarithm of LET. The ratio of I H to I L decreased exponentially up to 100 keV.μm 1 . These results show a possibility that the glow curve of BeO can be utilised for the evaluation of radiation quality where high LET particles are mixed, as in space.
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