Chemical erosion of different carbon composites under ITER-relevant plasma conditions

J. Westerhout; D. Borodin; R. S. Al; S. Brezinsek; M. H.J. 'T Hoen; A. Kirschner; S. Lisgo; H. J. Van Der Meiden; V. Philipps; M. J. Van De Pol; A. E. Shumack; G. De Temmerman; W. A.J. Vijvers; G. M. Wright; N. J. Lopes Cardozo; J. Rapp; G. J. Van Rooij

doi:10.1088/0031-8949/2009/T138/014017

Chemical erosion of different carbon composites under ITER-relevant plasma conditions

J. Westerhout
, D. Borodin
, R. S. Al
, S. Brezinsek
, M. H.J. 'T Hoen
, A. Kirschner
, S. Lisgo
, H. J. Van Der Meiden
, V. Philipps
, M. J. Van De Pol
, A. E. Shumack
, G. De Temmerman
, W. A.J. Vijvers
, G. M. Wright
, N. J. Lopes Cardozo
, J. Rapp
, G. J. Van Rooij

Research output: Contribution to journal › Conference article › peer-review

17 Scopus citations

Abstract

We have studied the chemical erosion of different carbon composites in Pilot-PSI at ITER-relevant hydrogen plasma fluxes (∼10²⁴ m ^-2 s^-1) and low electron temperatures (T_e∼1 eV). Optical emission spectroscopy on the CH A-X band was used to characterize the chemical sputtering. Fine grain graphite (R 6650, SGL Carbon Group), ITER-reference carbon fiber composite material (SNECMA NB31 and NB41; Dunlop 3D), nano- and micro-crystalline diamond coatings on molybdenum and SiC (Silit® SKD Reaction-Bonded, Saint-Gobain Ceramics) were compared. The chemical sputtering was similar for the different composites under comparable plasma conditions, except for SiC, which produced a ten times lower rate. The CH emission was constant at electron temperatures T_e>1 eV and ion fluxes ranging between 10²³ and 10²⁴ m^{- 2} s^-1, but decreased at lower temperatures. This decrease is possibly due to changes in the excitation of CH and not due to a change in the chemical erosion rate.

Original language	English
Article number	14017
Journal	Physica Scripta
Volume	T138
DOIs	https://doi.org/10.1088/0031-8949/2009/T138/014017
State	Published - 2009
Externally published	Yes
Event	12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12 - Julich, Germany Duration: May 11 2009 → May 14 2009

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10.1088/0031-8949/2009/T138/014017

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Westerhout, J., Borodin, D., Al, R. S., Brezinsek, S., 'T Hoen, M. H. J., Kirschner, A., Lisgo, S., Van Der Meiden, H. J., Philipps, V., Van De Pol, M. J., Shumack, A. E., De Temmerman, G., Vijvers, W. A. J., Wright, G. M., Lopes Cardozo, N. J., Rapp, J., & Van Rooij, G. J. (2009). Chemical erosion of different carbon composites under ITER-relevant plasma conditions. Physica Scripta, T138, Article 14017. https://doi.org/10.1088/0031-8949/2009/T138/014017

@article{43f002f514614751973c9cb8190de662,

title = "Chemical erosion of different carbon composites under ITER-relevant plasma conditions",

abstract = "We have studied the chemical erosion of different carbon composites in Pilot-PSI at ITER-relevant hydrogen plasma fluxes (∼1024 m -2 s-1) and low electron temperatures (Te∼1 eV). Optical emission spectroscopy on the CH A-X band was used to characterize the chemical sputtering. Fine grain graphite (R 6650, SGL Carbon Group), ITER-reference carbon fiber composite material (SNECMA NB31 and NB41; Dunlop 3D), nano- and micro-crystalline diamond coatings on molybdenum and SiC (Silit{\textregistered} SKD Reaction-Bonded, Saint-Gobain Ceramics) were compared. The chemical sputtering was similar for the different composites under comparable plasma conditions, except for SiC, which produced a ten times lower rate. The CH emission was constant at electron temperatures Te>1 eV and ion fluxes ranging between 1023 and 1024 m- 2 s-1, but decreased at lower temperatures. This decrease is possibly due to changes in the excitation of CH and not due to a change in the chemical erosion rate.",

author = "J. Westerhout and D. Borodin and Al, \{R. S.\} and S. Brezinsek and \{'T Hoen\}, \{M. H.J.\} and A. Kirschner and S. Lisgo and \{Van Der Meiden\}, \{H. J.\} and V. Philipps and \{Van De Pol\}, \{M. J.\} and Shumack, \{A. E.\} and \{De Temmerman\}, G. and Vijvers, \{W. A.J.\} and Wright, \{G. M.\} and \{Lopes Cardozo\}, \{N. J.\} and J. Rapp and \{Van Rooij\}, \{G. J.\}",

year = "2009",

doi = "10.1088/0031-8949/2009/T138/014017",

language = "English",

volume = "T138",

journal = "Physica Scripta",

issn = "0281-1847",

publisher = "IOP Publishing",

note = "12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12 ; Conference date: 11-05-2009 Through 14-05-2009",

}

Westerhout, J, Borodin, D, Al, RS, Brezinsek, S, 'T Hoen, MHJ, Kirschner, A, Lisgo, S, Van Der Meiden, HJ, Philipps, V, Van De Pol, MJ, Shumack, AE, De Temmerman, G, Vijvers, WAJ, Wright, GM, Lopes Cardozo, NJ, Rapp, J & Van Rooij, GJ 2009, 'Chemical erosion of different carbon composites under ITER-relevant plasma conditions', Physica Scripta, vol. T138, 14017. https://doi.org/10.1088/0031-8949/2009/T138/014017

TY - JOUR

T1 - Chemical erosion of different carbon composites under ITER-relevant plasma conditions

AU - Westerhout, J.

AU - Borodin, D.

AU - Al, R. S.

AU - Brezinsek, S.

AU - 'T Hoen, M. H.J.

AU - Kirschner, A.

AU - Lisgo, S.

AU - Van Der Meiden, H. J.

AU - Philipps, V.

AU - Van De Pol, M. J.

AU - Shumack, A. E.

AU - De Temmerman, G.

AU - Vijvers, W. A.J.

AU - Wright, G. M.

AU - Lopes Cardozo, N. J.

AU - Rapp, J.

AU - Van Rooij, G. J.

PY - 2009

Y1 - 2009

N2 - We have studied the chemical erosion of different carbon composites in Pilot-PSI at ITER-relevant hydrogen plasma fluxes (∼1024 m -2 s-1) and low electron temperatures (Te∼1 eV). Optical emission spectroscopy on the CH A-X band was used to characterize the chemical sputtering. Fine grain graphite (R 6650, SGL Carbon Group), ITER-reference carbon fiber composite material (SNECMA NB31 and NB41; Dunlop 3D), nano- and micro-crystalline diamond coatings on molybdenum and SiC (Silit® SKD Reaction-Bonded, Saint-Gobain Ceramics) were compared. The chemical sputtering was similar for the different composites under comparable plasma conditions, except for SiC, which produced a ten times lower rate. The CH emission was constant at electron temperatures Te>1 eV and ion fluxes ranging between 1023 and 1024 m- 2 s-1, but decreased at lower temperatures. This decrease is possibly due to changes in the excitation of CH and not due to a change in the chemical erosion rate.

AB - We have studied the chemical erosion of different carbon composites in Pilot-PSI at ITER-relevant hydrogen plasma fluxes (∼1024 m -2 s-1) and low electron temperatures (Te∼1 eV). Optical emission spectroscopy on the CH A-X band was used to characterize the chemical sputtering. Fine grain graphite (R 6650, SGL Carbon Group), ITER-reference carbon fiber composite material (SNECMA NB31 and NB41; Dunlop 3D), nano- and micro-crystalline diamond coatings on molybdenum and SiC (Silit® SKD Reaction-Bonded, Saint-Gobain Ceramics) were compared. The chemical sputtering was similar for the different composites under comparable plasma conditions, except for SiC, which produced a ten times lower rate. The CH emission was constant at electron temperatures Te>1 eV and ion fluxes ranging between 1023 and 1024 m- 2 s-1, but decreased at lower temperatures. This decrease is possibly due to changes in the excitation of CH and not due to a change in the chemical erosion rate.

UR - https://www.scopus.com/pages/publications/77953887506

U2 - 10.1088/0031-8949/2009/T138/014017

DO - 10.1088/0031-8949/2009/T138/014017

M3 - Conference article

AN - SCOPUS:77953887506

SN - 0281-1847

VL - T138

JO - Physica Scripta

JF - Physica Scripta

M1 - 14017

T2 - 12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12

Y2 - 11 May 2009 through 14 May 2009

ER -

Chemical erosion of different carbon composites under ITER-relevant plasma conditions

Abstract

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