Zobrazeno 1 - 10
of 42
pro vyhledávání: '"W R Wampler"'
Autor:
T Abrams, J G Guterl, S Abe, D C Donovan, I Bykov, C A Johnson, J H Nichols, J D Elder, D A Ennis, S D Loch, D L Rudakov, G Sinclair, C H Skinner, P C Stangeby, D M Thomas, E A Unterberg, W R Wampler
Publikováno v:
Materials Research Express, Vol 10, Iss 12, p 126503 (2023)
Fundamental mechanisms governing the erosion and prompt re-deposition of tungsten impurities in tokamak divertors are identified and analyzed to inform the lifetime of tungsten plasma-facing components in ITER and other future devices. Various experi
Externí odkaz:
https://doaj.org/article/0a7001fe3a7a45338e386899869cccc0
Autor:
S. D. Koukourinkova, A. Colon, B. L. Doyle, G. Vizkelethy, G. W. Pickrell, B. P. Gunning, K. E. Kropka, E. S. Bielejec, W. R. Wampler
Publikováno v:
IEEE Transactions on Nuclear Science. 70:469-477
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa319a6974b60bdf715a307e925a9ead
https://doi.org/10.1109/tns.2023.3257768
https://doi.org/10.1109/tns.2023.3257768
Publikováno v:
Journal of Applied Physics. 132:095702
A model was developed for the operation of a GaN pn junction vertical diode which includes rate equations for carrier capture and thermally activated emission by substitutional carbon impurities and carrier generation by ionizing radiation. The model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ff2ebcae261244408178dcd230a8ad6
https://doi.org/10.1063/5.0106905
https://doi.org/10.1063/5.0106905
Autor:
Adam McLean, W. P. West, P.C. Stangeby, S. L. Allen, J. G. Watkins, S. Lisgo, M. E. Fenstermacher, A. Nagy, N.H. Brooks, J.D. Elder, W. R. Wampler, M. Groth, D. L. Rudakov, J. A. Boedo, D. G. Whyte
Publikováno v:
Journal of Nuclear Materials. :124-128
As part of a study of carbon–tritium co-deposition, we carried out an experiment on DIII-D involving a toroidally symmetric injection of 13CH4 at the top of a LSN discharge. A Monte Carlo code, DIVIMP-HC, which includes molecular breakup of hydroca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cf32f3c5c08141704a74bddd126cb75
https://doi.org/10.1016/j.jnucmat.2004.10.130
https://doi.org/10.1016/j.jnucmat.2004.10.130
Autor:
S. M. Myers, W. R. Wampler
Publikováno v:
Journal of Applied Physics. 94:5682-5687
We examine physical processes controlling thermal release of hydrogen (H) from magnesium-doped gallium nitride, GaN(Mg). H release from GaN(Mg) was measured under ultra-high-vacuum conditions with surface cleaning and characterization to give clean w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14856abe79ce6ecff99e4c4821806507
https://doi.org/10.1063/1.1616986
https://doi.org/10.1063/1.1616986
Autor:
W R Wampler, V. Philipps, Dennis Whyte, A.A. Haasz, C. Grisolia, Ahmed Hassanein, C. H. Skinner, J. Roth, Jeffrey N. Brooks, J. P. Coad, G. Federici, C. S. Pitcher
Publikováno v:
Nuclear Fusion. 41:1967-2137
The major increase in discharge duration and plasma energy in a next step DT fusion reactor will give rise to important plasma-material effects that will critically influence its operation, safety and performance. Erosion will increase to a scale of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::918407d9cdf294a272eb4c374fe3c809
https://doi.org/10.1088/0029-5515/41/12/218
https://doi.org/10.1088/0029-5515/41/12/218
Autor:
Jeffrey N. Brooks, Wolfgang Jacob, C. H. Skinner, R. A. Anderl, J. P. Coad, R. A. Causey, J. Roth, G. Janeschitz, G. Federici, R. P. Doerner, A.A. Haasz, A. Peacock, W R Wampler, D. Cowgill, P.L. Andrew, G. R. Longhurst, V. Philipps, M Pick, R. Nygren
Publikováno v:
Journal of Nuclear Materials. :14-29
Tritium retention inside the vacuum vessel has emerged as a potentially serious constraint in the operation of the International Thermonuclear Experimental Reactor (ITER). In this paper we review recent tokamak and laboratory data on hydrogen, deuter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d28968b1f7204915ba6bd5ef5a64a573
https://doi.org/10.1016/s0022-3115(98)00876-9
https://doi.org/10.1016/s0022-3115(98)00876-9
Autor:
J. C. Barbour, W. R. Wampler
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 12:1978-1983
The concentration of hydrogen in solution near the surface of silicon exposed to an electron cyclotron resonance (ECR) plasma was determined by measuring the flux of hydrogen permeating to subsurface microcavities. The energy and flux of hydrogen imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::797ec82a1c2f30917b14b22a46dcf748
https://doi.org/10.1116/1.578993
https://doi.org/10.1116/1.578993
Publikováno v:
Materials Science Forum. :81-86
The strength of deuterium bonding to the walls of closed cavities within Si was determined in ion-beam experiments. These studies circumvented an inherent indeterminacy in the analysis of external-surface desorption and thereby allowed the Si-H surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ad84c58e00e9de0cf83798e24a8b300
https://doi.org/10.4028/www.scientific.net/msf.83-87.81
https://doi.org/10.4028/www.scientific.net/msf.83-87.81
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 9:717-721
Electron cyclotron resonance (ECR) plasmas yield low energy and high ion density plasmas. The characteristics downstream of an ECR hydrogen plasma were investigated as a function of microwave power and magnetic field. A fast‐injection Langmuir prob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07a93d54e767ee0f15ee948047871713
https://doi.org/10.1116/1.577350
https://doi.org/10.1116/1.577350