This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2004.10.148 in citations.
Fuel removal from bumper limiter tiles by using a pulsed excimer laser
Fuel removal from bumper limiter tiles by using a pulsed excimer laser
Samples of a limiter tile from the TEXTOR tokamak were investigated by scanning electron microscopy and nuclear reaction analysis both before and after laser heating. SEM images showed spheres and thin flakes covering the surface which are the areas modified by plasma particles striking under grazin...
Saved in:
Personal Name(s): | Emmoth, B. |
---|---|
Khartsev, S. / Pisarev, A. / Grishin, A. / Karlsson, U. / Litnovsky, A. / Rubel, M. / Wienhold, P. | |
Contributing Institute: |
Institut für Plasmaphysik; IPP |
Published in: | Journal of nuclear materials, 337-339 (2005) S. 639 - 643 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2005
|
Physical Description: |
639 - 643 |
DOI: |
10.1016/j.jnucmat.2004.10.148 |
Document Type: |
Journal Article |
Research Program: |
Kernfusion und Plasmaforschung |
Series Title: |
Journal of Nuclear Materials
337-339 |
Subject (ZB): | |
Publikationsportal JuSER |
Samples of a limiter tile from the TEXTOR tokamak were investigated by scanning electron microscopy and nuclear reaction analysis both before and after laser heating. SEM images showed spheres and thin flakes covering the surface which are the areas modified by plasma particles striking under grazing angles. Due to roughness of the surface there are shadowed regions between the 'flakes'. Laser pulses did not lead to expected common ablation of the surface. Features that looked like 'melting' of thin surface layers were rather observed. The initial deuterium content in the surface layer of tiles was of the order of 10(18) D atoms per cm(2). After the laser light impact the content decreased with 60-70%; by reducing the deposited power by a factor four, the deuterium content was decreased by 40-50%. We make the interpretation that we approach a threshold of the laser detritiation method in fusion devices. (c) 2004 Elsevier B.V. All rights reserved. |