Ionization Surface Activity Monitor for Tritium
Fusion Science and Technology / Volume 28 / Number 3P1 / October 1995 / Pages 893-898
Tritium Safety / Proceedings of the Fifth Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 / dx.doi.org/10.13182/FST95-A30518
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On the basis of the principle of gas ionization, a simple, compact and portable surface activity monitor for tritium has been conceived. Theoretical analysis suggest that the ionization surface activity monitor would have a sensitivity of about 74 Bq cm−2, this sensitivity value having being determined for a measurement surface area of 1 cm2 and current measurement limit of 1 fA. Experimentally, several proof of principle tests have been carried out demonstrating the validity and viability of the ionization surface activity monitor. The results show that the ionization surface activity monitor is a simple, direct and effective tool for the measurement of tritium activity on surfaces and in the near surface regions.
