Results 21 to 30 of about 140,360 (284)

Effects of low-Z and high-Z impurities on divertor detachment and plasma confinement

Nuclear Materials and Energy, 2017
The impurity-seeded detached divertor is essential for heat exhaust in ITER and other reactor-relevant devices. Dedicated experiments with injection of N2, Ne and Ar have been performed in DIII-D to assess the impact of the different impurities on ...
H.Q. Wang, H.Y. Guo, T.W. Petrie, A.W. Leonard, D.M. Thomas, J.G. Watkins   +5 more
doaj   +1 more source

Vacuum ultraviolet spectroscopy in detached plasmas with impurity gas seeding in LHD [PDF]

, 2014
We have carried out vacuum ultraviolet (VUV) spectroscopy of impurity ions in detached plasmas with impurity gas seeding in the Large Helical Device (LHD).
YOSHINUMA, Mikiro, LHD Experiment Group,, SUZUKI, Chihiro, AKIYAMA, Tsuyoshi, The LHD Experiment Group,, MURAKAMI, Izumi, MASUZAKI, Suguru, FUNABA, Hisamichi, YOSHINUMA, Mikirou   +8 more
core   +2 more sources

Impact of Kr and Ar seeding on D retention in ferritic-martensitic steels after high-fluence plasma exposure

Nuclear Materials and Energy, 2018
Total deuterium (D) retention from the bulk material of reduced-activation ferritic-martensitic (RAFM) steel Eurofer’97 (EU’97) and commercial ferritic-martensitic grade P92 was traced experimentally by means of thermal desorption spectroscopy (TDS) and ...
Y. Martynova, M. Freisinger, A. Kreter, B. Göths, S. Möller, A. Terra, D. Matveev, M. Rasiński, B. Unterberg, S. Brezinsek, Ch. Linsmeier   +10 more
doaj   +1 more source

Predictive modelling of impurity seeded plasmas in JET [PDF]

Plasma Physics and Controlled Fusion, 2002
Seeding of impurities into JET resulted in a pronounced modification of plasma confinement properties. In order to analyse the underlying mechanisms a predictive transport modelling has been performed by means of two approaches. (i) The Chalmers advanced fluid model for temperature gradient driven instabilities is applied to determine all transport ...
M Z Tokar, H Nordman, J Weiland, J Ongena, V Parail, B Unterberg, contributors to the EFDA-JET Workprogramme   +6 more
openaire   +2 more sources

Simulations on edge localized modes mitigation with impurity seeding in the HL-2A tokamak

, 2022
International audienceImpurity seeding has been confirmed to be a potential way for edge localized modes (ELMs) to be mitigated in tokamaks. This paper mainly combines the integrated equilibria reconstruction framework and edge simulation codes such as ...
Yuan, Boda, Li, Zhengji, Xu, Min, Xue, Miao, Tong, Ruihai, Zou, Yunpeng, Liang, Anshu, Xiao, Guoliang, Zou, Xiaolan, Li, Jiaxian, Zhu, Yiren, Zhong, Wulyu, Zhang, Yipo   +12 more
core   +1 more source

Impurity seeding and scaling of edge parameters in ITER [PDF]

Journal of Nuclear Materials, 2009
Abstract ITER divertor and edge modelling with the ITER B2–EIRENE code including neutral–neutral and molecule–ion collisions has led to updated scaling of the helium density and flux and the DT flux with the pumping speed and the divertor neutral pressure.
Pacher, H. D., Kukushkin, A. S., Pacher, G. W., Kotov, V., Janeschitz, G., Reiter, D., Coster, D. P., ASDEX Upgrade Team   +7 more
openaire   +4 more sources

Effects of the gas puffing neutral on the plasma parameters in the end-cell of GAMMA 10/PDX by using the multi-fluid code “LINDA”

Nuclear Materials and Energy, 2019
This research numerically investigates the behavior of plasma flow in GAMMA 10/PDX. The impact of impurity gases seeding into the divertor region on the plasma parameters and the energy loss processes has been investigated numerically by using the multi ...
M.S. Islam, Y. Nakashima, S. Takechi, R. Tatsumi, A. Hatayama, T. Iijima, S. Yamashita, T. Yoshimoto, T. Hara, N. Ezumi, M. Sakamoto   +10 more
doaj   +1 more source

Development of DTT single null divertor scenario

Nuclear Materials and Energy, 2021
This paper focuses on scrape-off layer and divertor modelling of the medium-density single-null scenario of the Divertor Test Tokamak facility (DTT), under construction in Italy.
L. Balbinot, G. Rubino, P. Innocente
doaj   +1 more source

Truth, purification and power: Foucault's genealogy of purity and impurity in and after The Will to Know lectures [PDF]

, 2014
Foucault’s 1970–71 lectures at the Collège de France, The Will to Know, highlight the significance of themes of purity and impurity in Western thought. Reflecting on these themes coincided with the emergence of Foucault’s theory of power.
Adey, Kate, Robbie Duschinsky, Duschinsky, Robbie, Kate Lampitt Adey   +3 more
core   +1 more source

3D modeling of boron transport in DIII-D L-mode wall conditioning experiments

Nuclear Materials and Energy, 2021
DIII-D L-mode experiments with local boron powder injection for real-time wall conditioning have been interpreted for the first time with the 3D plasma edge transport Monte Carlo code EMC3-EIRENE.
F. Effenberg, A. Bortolon, H. Frerichs, B. Grierson, J.D. Lore, T. Abrams, T.E. Evans, Y. Feng, R. Lunsford, R. Maingi, A. Nagy, R. Nazikian, D. Orlov, J. Ren, D.L. Rudakov, W.R. Wampler, H.Q. Wang   +16 more
doaj   +1 more source