Accès ouvert
2026
article
OpenAlex
Koyo Munechika, H. Tanaka, Shin Kajita, N. Ohno
Abstract We developed an advanced diagnostic system by adding an image intensifier and wavelength filters to the conventional high-speed camera setup to analyze rotating plasma ejection events in detached plasma which can be realized in the liner magnetized plasma device NAGDIS-II. The …
jp
(code pays fourni par la source)
2026
article
OpenAlex
Hiroki Natsume, H. Tanaka, S. Togo, K. Sawada et autres
A multi-ion-temperature model for hydrogen plasmas has been newly developed and implemented in the linear divertor plasma simulation code LINDA-NU to investigate detachment mechanisms involving atomic and molecular processes. In this model, H+, H2+, and H3+ ions are treated as separate fluids …
jp
(code pays fourni par la source)
Accès ouvert
2026
article
OpenAlex
Quan Shi, Hiyori Uehara, Shin Kajita, Hirohiko Tanaka et autres
This study investigates the formation of self-organized nanoscale structures, specifically pillars and ripples, on Gallium Arsenide (GaAs) and Silicon (Si) surfaces using low-energy Argon (Ar) plasma irradiation with minimal lattice damage. Experimental results show that spiral-like pillars form in the central region …
jp
(code pays fourni par la source)
Accès ouvert
2026
article
OpenAlex
Hirohiko Tanaka, Shin Kajita, Masanori Yamamoto, Koki Hayashi et autres
Tungsten (W) is a strong candidate for plasma-facing materials in fusion reactors because it is resistant to plasma particle bombardment. However, even W is subject to wear due to plasma particle bombardment, a phenomenon known as sputtering. Furthermore, the W particles ejected …
jp
(code pays fourni par la source)
Accès ouvert
2026
dataset
OpenAlex
Koyo Munechika, H. Tanaka, Shin Kajita, N. Ohno
Datasets for performing the analyses and recreating the figures from the manuscript.These datasets are handled by the cherab-nagdis package. Experimentally acquired datasets are "sccm430_n=**_G**.nc" files.The others are supplementary files to be used for further calculation or investigation related to the manuscript.
jp
(code pays fourni par la source)
Accès ouvert
2026
dataset
OpenAlex
Koyo Munechika, H. Tanaka, Shin Kajita, N. Ohno
Datasets for performing the analyses and recreating the figures from the manuscript.These datasets are handled by the cherab-nagdis package. Experimentally acquired datasets are "sccm430_n=**_G**.nc" files.The others are supplementary files to be used for further calculation or investigation related to the manuscript.
jp
(code pays fourni par la source)
Accès ouvert
2026
article
OpenAlex
Yuki Hayashi, N. Ohno, Hiroki Natsume, H. Tanaka et autres
The dependence of the metastable state (23S) helium (He) density and temperature on the neutral gas pressure, Pn, in detached plasmas, was investigated in the NAGDIS-II linear plasma device using laser absorption spectroscopy and supporting diagnostics. Particular attention was paid to two …
jp
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
André Grosman, J. Roth, Jörg Winter, Jie Li et autres
• The article summarizes special presentations at the 26th Plasma Surface Interactions to mark its 50th anniversary. • Major highlights from all the previous conferences are presented. • It provides an overview of the huge and decisive progress in the field. The …
fr, de, cn, jp, us
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Long Li, Ze Chen, Zhe Liu, Zeshi Gao et autres
Abstract The permeation and retention of hydrogen isotopes in nuclear materials is critical to issues such as hydrogen embrittlement, tritium self-sufficiency, and radioactive safety in fusion reactors. Tungsten, the primary candidate for plasma-facing materials, undergoes high-flux helium plasma irradiation in fusion devices …
cn, jp
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Quan Shi, Shin Kajita, N. Ohno
The formation of fuzzy nanostructures on tungsten by helium plasma irradiation has been widely reported in studies utilizing linear plasma devices, with results indicating that such structures only develop at temperatures exceeding 900 K. In this study, fuzz grows at ∼750 K …
jp
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Yuki Hayashi, H. Tanaka, Shin Kajita, N. Ohno et autres
Abstract Pulsed plasma experiments simulating the transient divertor heat loads caused by edge-localized modes (ELMs) were conducted in Magnum-PSI, a linear plasma device capable of generating ITER-relevant conditions. The dynamic responses of detached recombining helium (He) plasmas to the pulsed plasma were …
jp, nl
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Yuta Kinashi, Naomichi Ezumi, Takumi SETO, Reina Miyauchi et autres
Abstract High-density and large-diameter plasma generation is expected to contribute to semiconductor manufacturing, space propulsion, and nuclear fusion. We develop a plasma generation method for high-density, large-diameter plasma by combining the advantages of both hot cathode arc discharge and helicon wave discharge …
jp
(code pays fourni par la source)