. Ce-chapitre-est-consacré-l-'´-etude-de-la-source-d-'hydrogène-atomique and . Qu, aux pre-mì eres expériences de gravure sur différents matériaux carbonés. L'objectif principal de cesdernì eresétaiteresétait de vérifier si notre source d'hydrogène atomique, avec une puissance RF maximale de 1 kW, permettait d'atteindre des vitesses d'´ erosion non négligeablesnégligeablesà si basse pression, et s'est limitéè a l'observation de la surfacé erodée pour voir si nous obtenions des structures se rapprochant de celles que l'on retrouve sur les tuiles des tokamaks

. Enfin, ladernì ere section présente l'effet de la source d'hydrogène atomique sur des tuiles de composite carbone-carbone, ´ egalement appelé compositè a fibre de carbone (CFC) de type N 11

]. Schéma-du-tokamak-tore-suprache10, CEA Cadarache), p.11

M. Image and . Unepoussì-ere-carbonée-en-chou-fleur..., obtenue dans le réacteur NAGDIS-II après exposition d'une cible de graphitè a un plasma de deutérium. (a)poussì ere initiale, (b) après dépôt d'une couche de tungstène pour la fixer, (c) structure interne de lapoussì eres après découpe par FIB ; (d), p.28

T. Signaux-observés-sur-l-'oscilloscope-lors-de-la, C2 (rouge) = signal TD-LIF, C3 (bleu) = signal de la diode de contrôle, et C4 (vert) = courant injecté dans la diode laser, p.53

+. .. Ar, Exemple de profil de raie obtenu par TD-LIF sur l'ion, p.55

L. Dispositif-expérimental-de-la and O. , ion argon ; (b) pour l'argon neutre, p.59

P. Rf-=, 400 W et (b) 500 W, B source = 75 G, B dif f = 70 G, pp.4-81

+. Ar and T. Mesurée-par, centre de la chambre de diffusion en fonction de P RF pour différentes valeurs de B source : 75 G, 115 G et 150 G, p.86

+. Ar, rel mesuré au centre de la chambre de diffusion en fonction de B source pour trois P RF fixées : 500, 700 et 900 W, p.91

E. Densitédensitéélectronique-n, de diffusion) en fonction de la pression pour deux valeurs de B source : 0 et 75 G, p.94

. Ar, L. Mesurée-par, T. Opo, and M. , en fonction de B dif f pour trois puissances fixées : (a) 500 W, (b) 700 W, et (c) 900 W. B source = 0 G, p.117

S. Taux-de-création-k-ne, P. De-destruction-k-ne, and .. , Ar m ] th calculés en fonction de B dif f pour trois puissances fixées : (a) 500 W, p.123

M. Images and 2. De-la-surface-d, unéchantillonunéchantillon de GrFl 125 ayant subi le traitement suivantAr 100/0, p = 10 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 4h, p.147

G. and B. Dif, = 100 G, t exp = 4h, chauffage du porte-´ echantillonàechantillonà 650?C, p.148

M. Images and 1. De-la-surface-d, unéchantillonunéchantillon de GrFl 125 ayant subi le traitement suivantAr 100/0, p = 100 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 4h, p.149

G. and B. Dif, = 100 G, t exp = 4h, chauffage du porte-´ echantillonàechantillonà 650?C, p.150

M. Images and . De-la-surface-d, unéchantillonunéchantillon de GrFl 125 ayant subi le traitement suivantAr 0/100, p = 10 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 4h, p.152

G. and B. Dif, = 100 G, t exp = 4h, chauffage du porte-´ echantillonàechantillonà 650?C, p.153

M. Images and . De-la-surface-d, unéchantillonunéchantillon de GrFl 125 ayant subi le traitement suivantAr 0/100, p = 100 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 4h, p.154

G. and B. Dif, = 100 G, t exp = 4h, chauffage du porte-´ echantillonàechantillonà 650?C, p.155

M. Images and . De-la-surface-d-'unéchantillonunéchantillon-de-n11-ayant-subi-le-traitement-suivant, Ar 100/0, p = 10 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 6h, p.163

M. Images and . De-la-surface-d-'unéchantillonunéchantillon-de-n11-ayant-subi-le-traitement-suivant, Ar 100/0, p = 10 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 6h, chauffage du porte-´ echantillonàechantillonà 650?C, p.165

M. Images and . De-la-surface-d-'unéchantillonunéchantillon-de-n11-ayant-subi-le-traitement-suivant, Ar 0/100, p = 10 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 6h, p.166

M. Images and . De-la-surface-d-'unéchantillonunéchantillon-de-n11-ayant-subi-le-traitement-suivant, Ar 0/100, p = 10 mTorr, P RF = 900 W, B source = 0 G, B dif f = 100 G, t exp = 6h, chauffage du porte-´ echantillonàechantillonà 650?C, p.167

M. Images and .. Mettant-enévidenceenévidence-les-effets-principaux-de-la-gravure-chimique, apparition de plaques de dépôts issu de la coalescence de croissances isolées (a) sur le graphite GrFl 125 et (b) sur le composite N11 ; (c) ouverture de pores entre les faisceaux de fibres de carbone sur leséchantillonsleséchantillons de composite N11, p.173

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