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Studies of Be migration in the JET tokamak using AMS with Be-10 markerBykov, I. P. ...The JET tokamak is operated with beryllium limiter tiles in the main chamber and tungsten coated carbon fiber composite tiles and solid W tiles in the divertor. One important issue is how wall ... materials are migrating during plasma operation. To study beryllium redistribution in the main chamber and in the divertor, a 10Be enriched limiter tile was installed prior to plasma operations in 2011-2012. Methods to take surface samples have been developed, an abrasive method for bulk Be tiles in the main chamber, which permits reuse of the tiles, and leaching with hot HCl to remove all Be deposited at W coated surfaces in the divertor. Quantitative analysis of the total amount of Be in cm2 sized samples was made with inductively coupled plasma atomic emission spectroscopy (ICP-AES). The 10Be/9Be ratio in the samples was measured with accelerator mass spectrometry (AMS). The experimental setup and methods are described in detail, including sample preparation, measures to eliminate contributions in AMS from the 10B isobar, possible activation due to plasma generated neutrons and effects of diffusive isotope mixing. For the first time marker concentrations are measured in the divertor deposits. They are in the range 0.4-1.2- of the source concentration, with moderate poloidal variationSource: IBA 2015 (Vol. 371, 2016đ, str. 370-275)Type of material - conference contributionPublish date - 2016Language - englishCOBISS.SI-ID - 30215207
Author
Bykov, I. P. |
Bergsaker, H. |
Possnert, Göran |
Zhou, Y. |
Heinola, K. |
Petersson, P. |
Conroy, S. |
Likonen, J. |
Widdowson, A.
Other authors
Snoj, Luka, 1981- |
Lengar, Igor
Topics
jedrska fizika |
tokamak |
fizika plazme
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Bykov, I. P. | |
Bergsaker, H. | |
Possnert, Göran | |
Zhou, Y. | |
Heinola, K. | |
Petersson, P. | |
Conroy, S. | |
Likonen, J. | |
Widdowson, A. | |
Snoj, Luka, 1981- | 27819 |
Lengar, Igor | 19167 |
Source: Personal bibliographies
and: SICRIS
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