Results 31 to 40 of about 140,360 (284)

Impurity transport studies in ASDEX by means of neon-seeded pellets [PDF]

Nuclear Fusion, 1989
Neon-seeded deuterium pellets, containing 1% neon, were successfully produced and injected into ASDEX divertor discharges. The behaviour of the deposited neon ions was studied by VUV spectroscopy, using a special version of the ASDEX/JET impurity transport code for interpretation.
Behringer, K., Buechl, K.
openaire   +2 more sources

Impacts of recycling impurity on the background ELM behavior during repetitive radiative divertor experiments in EAST

Nuclear Fusion, 2023
A significant change in the background ELM behavior prior to neon (Ne) seeding has been observed in a series of repetitive radiative divertor experiments in EAST.
Q.Q. Yang, X. Lin, G.S. Xu, L. Zhang, W.M. Zhang, Y. Ye, K.D. Li, D.G. Wu, Q. Zang, Y.J. Chen, X.M. Zhong, Y.F. Wang, L.Y. Meng, Y.M. Wang, Y.Y. Li, Y.M. Duan   +15 more
doaj   +1 more source

The radiated power limit in impurity seeded JET-ILW plasmas

Nuclear Materials and Energy, 2022
The total radiated fraction is examined in high density H-mode plasmas (Greenwald fraction of about 85 %) in JET by the variation of the auxiliary heating power of Pheat = 14 MW-29 MW.
A. Huber, M. Wischmeier, S. Wiesen, M. Bernert, A.V. Chankin, S. Aleiferis, S. Brezinsek, V. Huber, G. Sergienko, C. Giroud, M. Groth, S. Jachmich, Ch. Linsmeier, B. Lomanowski, C. Lowry, G.F. Matthews, A.G. Meigs, Ph. Mertens, S. Silburn, G. Telesca   +19 more
doaj   +1 more source

Effects of argon on deuterium retention in polycrystalline tungsten under single, sequential and simultaneous ion irradiation

Nuclear Materials and Energy, 2019
Argon is one of the candidates for impurity seeding in the ITER divertor; however, few studies exist on either Ar retention in W, or its effect on D retention in W.
J.A. Shanahan, T.J. Finlay, J.W. Davis, A.A. Haasz   +3 more
doaj   +1 more source

Tungsten erosion and divertor leakage from the DIII-D SAS-VW tungsten-coated divertor in experiments with neon gas seeding

Nuclear Materials and Energy, 2023
Collector probes have been used to examine tungsten divertor leakage in a variety of scenarios with low-Z impurity seeding during operation with the new tungsten-coated SAS-VW divertor in DIII-D.
Matthew S. Parsons, Jeremy D. Mateja, Seth H. Messer, Tyler Abrams, Jean Paul Allain, Alessandro Bortolon, Patrick Byrne, David C. Donovan, Florian Effenberg, Jeffrey L. Herfindal, Florian Laggner, Tomas Odstrcil, Jun Ren, Dmitry L. Rudakov, Gregory Sinclair, Robert S. Wilcox   +15 more
doaj   +1 more source

The effects of impurity gas seeding on the growth of fuzzy tungsten

Journal of Nuclear Materials, 2021
Abstract Using the linear plasma device NAGDIS-II operating with gas mixtures of helium (He) and impurity (Ne, N 2 , Ar), fibre-form nanostructures known as “fuzz” have been grown on tungsten (W) samples. In this system, fuzzy W was grown over a range of sample temperatures and ion fluences (containing He and impurity ion mixtures), but with ...
Patrick McCarthy, Dogyun Hwangbo, Shin Kajita, James W. Bradley   +3 more
openaire   +1 more source

Growth process of nano-tendril bundles with sputtered tungsten

Nuclear Materials and Energy, 2019
Nano-tendril bundles (NTBs) were generated in DC He plasma with impurity gas-seeding (Ne and N2) under sputtering-dominated conditions. NTB morphologies were characterized using the net erosion yield of samples.
Dogyun Hwangbo, Shin Kajita, Hirohiko Tanaka, Noriyasu Ohno   +3 more
doaj   +1 more source

Integration of high confinement, high poloidal beta plasma with dual radiated power and detachment controls for divertor protection and ELM suppression

Nuclear Materials and Energy, 2023
Divertor detachment without serious core confinement quality loss in DIII-D’s high poloidal β scenario has been combined with impurity-induced ELM mitigation without disruption.
D. Eldon, H.Q. Wang, L. Wang, S. Ding, A.M. Garofalo, X.Z. Gong, A.G. McLean, F. Scotti, J.G. Watkins, D. Weisberg   +9 more
doaj   +1 more source

Study of multiple impurity seeding effect using SONIC integrated divertor code for JT‐60SA plasma prediction

, 2019
In order to study the potential impurity seeding operation regime of the future fusion devices, the first application of the integrated divertor code SONIC to the Ar + Ne mixed‐impurity seeding operation of JT‐60SA steady‐state high‐β plasma has been ...
Yamoto, Shohei, Nakano, Tomohide, Homma, Yuki, 879870, 879861, 879863, 879862, 879865, 879864, Homma, Yuuki, 879867, 879866, Hoshino, Kazuo, 879869, 879868, Hayashi, Nobuhiko   +15 more
core   +1 more source

De novo synthesis of short‐chain aldehydes and hydrocarbons secreted by the brown marmorated stink bug Halyomorpha halys

FEBS Open Bio, EarlyView.
The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley   +1 more source