Abstract
Over the last 7-8 years, two quantitative analyzing
methods-accelerator mass spectrometry (AMS) and full
combustion (FC) followed by scintillation detection have
been applied for determining the tritium activity
concentrations in JET divertor tiles. These methods have
two main differences - the range of detection and the
spatial resolution - and are thus complementary. However,
these differences can also complicate the comparison of
the two techniques for typical JET divertor samples.
Therefore a cross comparison exercise for tritium
measurements was performed between the two methods using
specially produced identical standard samples. The cross
comparison measurements were performed firstly on the
identical standard samples and were extended then to
selected samples from the JET divertor tile (laser
treated and non-treated samples from tile 14ING3B exposed
in 2001-2004). The results obtained by AMS and FC agreed
within an error limit of 10% for the standard samples and
of 18% for the JET divertor samples. The results of this
comparison study provided also useful information
concerning the efficiency of tritium removal from the
plasma facing surface of the divertor tiles by means of
laser ablation.
Original language | English |
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Pages (from-to) | 2628-2634 |
Journal | Fusion Engineering and Design |
Volume | 89 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2014 |
MoE publication type | A1 Journal article-refereed |
Keywords
- accelerator mass spectometry
- full combustion
- tritium retention
- tokamaks