Results 11 to 20 of about 586 (201)

First impurity powder injection experiments in LHD

Nuclear Materials and Energy, 2020
Injection of impurities in the form of sub-millimeter powder grains is performed for the first time in the Large Helical Device (LHD) plasma, employing the Impurity Powder Dropper (IPD) (Nagy et al., 2018), developed and built by PPPL. Controlled amounts
F. Nespoli, N. Ashikawa, E.P. Gilson, R. Lunsford, S. Masuzaki, M. Shoji, T. Oishi, C. Suzuki, A. Nagy, A. Mollen, N.A. Pablant, K. Ida, M. Yoshinuma, N. Tamura, D.A. Gates, T. Morisaki   +15 more
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Numerical modeling of impurity powder injection in W7-X

Nuclear Materials and Energy
In this work, we present numerical simulation results of powder injection in W7-X using the EMC3-EIRENE and DIS codes. First, we model powder injection experiments performed in W7-X with the Probe Mounted Powder Injector.
F. Nespoli, Y. Feng, G. Kawamura, M. Shoji, R. Lunsford, D. Hathiramani, J. Koopmann, A. Nagy, F. Effenberg, N.A. Pablant, C. Killer, D. Zhang, M. Kubkowska, S. Jablonski, G. Kocsis, B. Buttenschön, D. Nicolai   +16 more
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Self-consistent transport simulation of boron dust particle injection in the peripheral plasma in Large Helical Device [PDF]

Contributions To Plasma Physics
ORCID　0000-0003-0655-7347The trajectories and the ablation positions of boron dust particles dropped from an impurity powder dropper in the peripheral plasma in the Large Helical Device (LHD) were calculated using a three-dimensional edge plasma ...
125301, 126188, 126508, 126509, 126510, 66267, 66274, 66902, GILSON, Eric, GILSON, Eric P, KAWAMURA, Gakushi, LUNSFORD, Robert, MASUZAKI, Suguru, NESPOLI, Federico, SHOJI, Mamoru, SMIRNOV, Roman, SMIRNOV, Roman D., TANAKA, Yasunori   +17 more
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Observation of a reduced-turbulence regime with boron powder injection in a stellarator [PDF]

, 2022
In state-of-the-art stellarators, turbulence is a major cause of the degradation of plasma confinement. To maximize confinement, which eventually determines the amount of nuclear fusion reactions, turbulent transport needs to be reduced.
ASHIKAWA Naoko, BORTOLON A., GATES David, GILSON Eric, IDA Katsumi, KAWAMURA Gakushi, KENMOCHI Naoki, KINOSHITA Toshiki, LUNSFORD Robert, MASUZAKI Suguru, MOLLEN Albert, MORISAKI Tomohiro, MOTOJIMA Gen, NAGY Alex, NESPOLI Federico, OISHI Tetsutarou, PABLANT Novimir, SHOJI Mamoru, SUZUKI Chihiro, TAKEMURA Yuki, TAMURA Naoki, TANAKA Kenji, YOSHINUMA Mikirou   +22 more
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Optimization of FeSO4 Molarity for Synthesis of Prussian Blue Pigment from Iron Sand from Sunur Beach Estuary, Pariaman [PDF]

, 2023
The objective of this research was to see how the molarity of Iron(II) sulfate (FeSO4) solution affected the coloring of the Prussian blue pigment produced, to find the best synthesis conditions.
Sudirman, Nafis
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Experimental study on boron distribution and transport at plasma-facing components during impurity powder dropping in the Large Helical Device [PDF]

, 2022
Toward real-time wall conditioning, impurity powder dropping experiments with boron powder were performed in the 22nd experimental campaign of the Large Helical Device. To examine the deposition and desorption process of boron, we focus on boron hydride (
ASHIKAWA Naoko, GATES David, GILSON Eric P, GOTO Motoshi, KAWAMOTO Yasuko, KAWAMURA Gakushi, KAWATE Tomoko, LUNSFORD Robert, MASUZAKI Suguru, NAGY Alex, NESPOLI Federico, OISHI Tetsutarou, SHOJI Mamoru, SUZUKI Chihiro, TOYODA Hirotaka   +14 more
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Transparent conductive oxide films for high-performance dye-sensitized solar cells [PDF]

, 2017
In this paper, atmospheric pressure chemical vapor deposition of fluorine-doped tin oxide (FTO) thin films of various thicknesses and dopant levels is reported.
Afzaal, M, Al-Ahmed,, A, Al-Sulaiman, FA, Ali, H, Hakeem, A.S., Mehmood, U, Yates, HM   +6 more
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Utilization of Spent Arabica Coffee Grounds as Raw Material for Activated Charcoal in Liquid Bath Soap Formulation [PDF]

, 2023
Arabica coffee (Coffea arabica) is one of the most popular coffees among Acehnese, an ethnic group from Aceh, Indonesia. The amount of coffee consumed is directly proportional to the amount of coffee waste produced.
Desiyana, Lydia Septa, Illian, Didi Nurhadi, Maysarah, Hilda, Nurzuhra, Siti   +3 more
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Study on Improving Flotation Effect and Mechanism of Fine Anthracite by Polyacrylamide, Sodium Silicate and Sodium Oleate [PDF]

, 2023
The flotation performance of clean coal with different reagents and pretreatment agents was investigated. The study examines the efficient recovery of anthracite coal using polyacrylamide flotation pretreatment.
Rahman, Zia Ur, Xianshu, Dong
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Deuterium retention in pre-lithiated samples and Li–D co-deposits in the DIII-D tokamak

Nuclear Materials and Energy
Divertor designs involving liquid lithium have been proposed as an alternative to solid designs and wall conditioning techniques. However, Li affinity with tritium poses a risk for the fuel cycle.
M. Morbey, F. Effenberg, S. Abe, T. Abrams, A. Bortolon, R. Hood, U. Losada, A. Nagy, J. Ren, D.L. Rudakov, M.J. Simmonds, D. Truong, T.W. Morgan   +12 more
doaj   +1 more source