Search Results - "Drenik, A"

Ammonia production in a dual crossed atom beam experiment by Zaplotnik, R., Drenik, A., Vesel, A., Mozetič, M.

“…Abstract Production of ammonia by surface reactions of H and N atoms on surfaces not wetted by partially ionized plasma may represent an important…”
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Controlled carbon deposit removal by oxygen radicals by Drenik, A., Vesel, A., Mozetič, M.

“…Amorphous hydrogenated carbon deposits are a present problem in fusion devices with carbon walls. They act as an unpredictable source of hydrogen retention and…”
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Long pulse D 2 and N 2 seeded discharges on the upper actively cooled tungsten divertor of WEST by Dittmar, T, Loarer, T, Drenik, A, Bourdelle, C, Brezinsek, S, Desgranges, C, Douai, D, Fedorczak, N, Guirlet, R, Gunn, J, Meyer, O, Laguardia, L, Tsitrone, E

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Recombination of atomic oxygen and hydrogen on amorphous carbon by Drenik, A., Vesel, A., Mozetič, M., Panjan, P.

“…Deposit buildup and fuel entrapment due to amorphous carbon are relevant issues in fusion devices with carbon based plasma facing components. Neutral atomic…”
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Isotope exchange by Ion Cyclotron Wall Conditioning on JET by Wauters, T., Douai, D., Kogut, D., Lyssoivan, A., Brezinsek, S., Belonohy, E., Blackman, T., Bobkov, V., Crombé, K., Drenik, A., Graham, M., Joffrin, E., Lerche, E., Loarer, T., Lomas, P.L., Mayoral, M.-L., Monakhov, I., Oberkofler, M., Philipps, V., Plyusnin, V., Sergienko, G., Van Eester, D.

“…The isotopic exchange efficiencies of JET Ion Cyclotron Wall Conditioning (ICWC) discharges produced at ITER half and full field conditions are compared for…”
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Plasma–wall interactions with nitrogen seeding in all-metal fusion devices: Formation of nitrides and ammonia by Oberkofler, Martin, Alegre, D., Aumayr, F., Brezinsek, S., Dittmar, T., Dobes, K., Douai, D., Drenik, A., Köppen, M., Kruezi, U., Linsmeier, Ch, Lungu, C.P., Meisl, G., Mozetic, M., Porosnicu, C., Rohde, V., Romanelli, S.G.

“…•Nitrogen chemistry is a potential issue for the use of N2 as seeding species to cool the edge of fusion plasmas.•Surface nitride formation on Be and W in…”
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Mass spectrometry analysis of the impurity content in N2 seeded discharges in JET-ILW by Drenik, A., Oberkofler, M., Alegre, D., Kruezi, U., Brezinsek, S., Mozetic, M., Nunes, I., Wischmeier, M., Giroud, C., Maddison, G., Reux, C.

“…Presented are the results of the first mass spectrometry study of impurities at JET with the ILW. Measurements are performed with the newly-installed RGA…”
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Suppression of tritium retention in remote areas of ITER by nonperturbative reactive gas injection by Tabarés, F L, Ferreira, J A, Ramos, A, van Rooij, G, Westerhout, J, Al, R, Rapp, J, Drenik, A, Mozetic, M

“…A technique based on reactive gas injection in the afterglow region of the divertor plasma is proposed for the suppression of tritium-carbon codeposits in…”
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Nitrogen removal from plasma-facing components by ion cyclotron wall conditioning in TEXTOR by Carrasco, A.G., Wauters, T., Petersson, P., Drenik, A., Rubel, M., Crombé, K., Douai, D., Fortuna, E., Kogut, D., Kreter, A., Lyssoivan, A., Möller, S., Pisarek, M., Vervier, M.

“…The efficiency of ion cyclotron wall conditioning (ICWC) in the removal of nitrogen from plasma-facing components in TEXTOR was assessed. In two experiments…”
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Erosion of amorphous carbon layers in the afterglow of oxygen microwave plasma by Drenik, A., Salamon, L., Zaplotnik, R., Vesel, A., Mozetič, M.

“…We present a study of the interaction of amorphous hydrogenated carbon deposits (a-C:H) with neutral oxygen atoms. Samples of a-C:H were exposed to an atomic…”
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Trajectories of Dust Particles in Low-Pressure Magnetized Plasma by Drenik, A., Yuryev, P., Clergereaux, R.

“…The growth of dust particles in electron cyclotron resonance plasma is highly related to the confinement of species in the magnetic field. Nanoparticles formed…”
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Gas analyses of the first complete JET cryopump regeneration with ITER-like wall by Grünhagen Romanelli, S, Brezinsek, S, Butler, B, Coad, J P, Drenik, A, Giroud, C, Jachmich, S, Keenan, T, Kruezi, U, Mozetic, M, Oberkofler, M, Parracho, A, Romanelli, M, Smith, R, Yorkshades, J

“…Analytical results of a complete JET cryopump regeneration, including the nitrogen panel, following the first ITER-like wall campaign are presented along with…”
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Catalytic probes for measuring H distribution in remote parts of hydrogen plasma reactors by Mozetic, M., Vesel, A., Drenik, A., Poberaj, I., Babic, D.

“…Catalytic probes for measuring the H density in remote parts of hydrogen plasma reactors are presented. The probe allows for determination of the H density in…”
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Behaviour of neutral hydrogen atom density in the presence of a sample holder in a plasma reactor by Drenik, A., Tomeljak, A., Mozetic, M., Vesel, A., Babic, D., Balat - Pichelin, M.

“…The behaviour of density of neutral hydrogen atoms in the presence of a sample holder in a MESOX reactor was studied. The MESOX reactor is used for studying…”
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Tritium control techniques in ITER by ammonia injection by Tabarés, F.L., Ferreira, J.A., Ramos, A., Alegre, D., van Rooij, G., Westerhout, J., Al, R., Rapp, J., Drenik, A., Mozetic, M.

“…A technique based on ammonia injection in the afterglow region of the divertor plasma is proposed for the inhibition of tritium/carbon co-deposits in remote…”
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Nitrogen transport in ASDEX Upgrade: Role of surface roughness and transport to the main wall by Meisl, G., Oberkofler, M., Hakola, A., Krieger, K., Schmid, K., Lisgo, S.W., Mayer, M., Lahtinen, A., Drenik, A., Potzel, S., Aho-Mantila, L., Team, ASDEX Upgrade

“…•The transport and deposition of nitrogen in ASDEX Upgrade was studied by the injection of 15N and ion beam analysis of exposed samples.•The N deposition on…”
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First nitrogen-seeding experiments in JET with the ITER-like Wall by Oberkofler, M., Douai, D., Brezinsek, S., Coenen, J.W., Dittmar, T., Drenik, A., Romanelli, S.G., Joffrin, E., McCormick, K., Brix, M., Calabro, G., Clever, M., Giroud, C., Kruezi, U., Lawson, K., Linsmeier, Ch, Martin Rojo, A., Meigs, A., Marsen, S., Neu, R., Reinelt, M., Sieglin, B., Sips, G., Stamp, M., Tabares, F.L.

“…In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance…”
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Long pulse D2 and N2 seeded discharges on the upper actively cooled tungsten divertor of WEST by Dittmar, T, Loarer, T, Drenik, A, Bourdelle, C, Brezinsek, S, Desgranges, C, Douai, D, Fedorczak, N, Guirlet, R, Gunn, J, Meyer, O, Laguardia, L, Tsitrone, E

“…A series of L-mode discharges in upper single null configuration with more than 30 s duration were performed in the WEST tokamak with the strike line on…”
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Mass spectrometry analysis of the impurity content in N sub(2) seeded discharges in JET-ILW by Drenik, A, Oberkofler, M, Alegre, D, Kruezi, U, Brezinsek, S, Mozetic, M, Nunes, I, Wischmeier, M, Giroud, C, Maddison, G, Reux, C

“…Presented are the results of the first mass spectrometry study of impurities at JET with the ILW. Measurements are performed with the newly-installed RGA…”
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Nitrogen retention mechanisms in tokamaks with beryllium and tungsten plasma-facing surfaces by Oberkofler, M, Meisl, G, Hakola, A, Drenik, A, Alegre, D, Brezinsek, S, Craven, R, Dittmar, T, Keenan, T, Romanelli, S G, Smith, R, Douai, D, Herrmann, A, Krieger, K, Kruezi, U, Liang, G, Linsmeier, Ch, Mozetic, M, Rohde, V

“…Global gas balance experiments at ASDEX Upgrade (AUG) and JET have shown that a considerable fraction of nitrogen injected for radiative cooling is not…”
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