Deuterium retention in different carbon materials exposed in TEXTOR:
2008 (English)In: PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY, Bristol: IOP PUBLISHING LTD , 2008, Vol. 100, no PART 6, 062024- p.Conference paper (Refereed)
CFC NB31, CFC DMS780 and fine-grain graphite EK98 were simultaneously exposed in the SOL of TEXTOR in order to measure the retention of deuterium in the material bulk. After exposure, the samples were analysed by thermal desorption spectrometry and nuclear reaction analysis with a conventional beam as well as with a microbeam. The deuterium retention amounts (2-4).10(21) D/m(2) for the incident fluence of similar to 2.10(25) D/m(2). The retention values are similar for both CFC materials and lower by similar to 20-40% for EK98. The retention in all three materials scales roughly with a square root of incident fluence without saturation for the range of fluences obtained. The majority of deuterium is stored in a surface layer of <8 mu m. However, in NB31 deuterium is detectable as deep as 80 mu m. The in-bulk retention estimated for a TEXTOR experimental campaign of approximate to 7500 s of plasma has a contribution of approximate to 10% to the total retention, which is dominated by deuterium-carbon co-deposition.
Place, publisher, year, edition, pages
Bristol: IOP PUBLISHING LTD , 2008. Vol. 100, no PART 6, 062024- p.
, Journal of Physics Conference Series, ISSN 1742-6588 ; 100
Carbon material, Codeposition, Deuterium retention, Experimental campaign, Fluences, Material bulk, Micro beams, Nuclear reaction analysis, Square roots, Surface layers, Thermal desorption spectrometry, Nuclear reactors, Surface chemistry, Thermal desorption
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-24661DOI: 10.1088/1742-6596/100/6/062024ISI: 000275655200220ScopusID: 2-s2.0-77954332221OAI: oai:DiVA.org:kth-24661DiVA: diva2:352525
17th International Vacuum Congress/13th International Conference on Surface Science/Internatinal Conference on Nanoscience and Technology Stockholm, SWEDEN, JUL 02-06, 2007
QC 201102022010-09-212010-09-212011-09-07Bibliographically approved