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We report on the development of detection devices enabling the direct activity monitoring of liquid sources containing alpha emitters, with interests for nuclear waste process monitoring. The devices rely upon the use of a synthetic diamond active layer, used for detection, a material being totally inert and not affected by its direct contact with the corrosive media used here (concentrated HNO3,...
Corrosion hard alpha particle detectors have been fabricated from thin diamond layers grown on silicon using the microwave enhanced chemical vapour deposition technique (CVD). The devices can be directly immersed in radioactive liquid solutions and enable the real time and in situ measurement of their alpha activity. We report here measurements on devices immersed in a plutonium-239 radioactive source...
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