Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Junko KOHAGURA"'
Autor:
Kunpei Nojiri, Mizuki Sakamoto, Naomichi Ezumi, Akihiro Terakado, Takaaki Iijima, Satoshi Togo, Takayuki Yokodo, Yosuke Kinoshita, Tomohiro Mikami, Tsubasa Yoshimoto, Sotaro Yamashita, Junko Kohagura, Masayuki Yoshikawa, Yousuke Nakashima
Publikováno v:
Nuclear Materials and Energy, Vol 20, Iss , Pp - (2019)
Gas puff and pump experiments on the plasma applied in a divertor simulation were conducted in the GAMMA 10/PDX tandem mirror. Additional hydrogen gas was supplied to the plasma with and without a pump in the region of the divertor simulation. To dec
Externí odkaz:
https://doaj.org/article/53d5930a0c0a4567a2c4b6802b85bd9d
Autor:
Naoki SHIGEMATSU, Naomichi EZUMI, Kiyofumi MUKAI, Takumi SETO, Takuma OKAMOTO, Kosuke TAKANASHI, Satoshi TAKAHASHI, Reina MIYAUCHI, Satoshi TOGO, Mafumi HIRATA, Junko KOHAGURA, Masayuki YOSHIKAWA, Ryutaro MINAMI, Yousuke NAKASHIMA, Mizuki SAKAMOTO
Publikováno v:
Plasma and Fusion Research. 18:2402031-2402031
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5c52b10c5503345eb52298b17f418a1
https://doi.org/10.1585/pfr.18.2402031
https://doi.org/10.1585/pfr.18.2402031
Autor:
Yukihiko Sugimoto, M. Yoshikawa, Junko Kohagura, R. Matsuura, H. Yamazaki, S. Jang, Ryo Sekine, Kairi Sugata, Takumi Aizawa, Makoto Ichimura, Yuusuke Kubota, D. Kim, Daichi Noguchi, Naomichi Ezumi, Mizuki Sakamoto, Ryuya Ikezoe, Yousuke Nakashima, M. Hirata, Hiroki Kayano
Publikováno v:
The Review of scientific instruments. 92(5)
In the GAMMA 10/PDX tandem mirror, plasma with strong ion-temperature anisotropy is produced by using the ion cyclotron range of frequency waves. This anisotropy of ion temperature causes several Alfven-Ion-Cyclotron (AIC) waves to spontaneously exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61faea4830ea710f8820599afcd24315
https://pubmed.ncbi.nlm.nih.gov/34243319
https://pubmed.ncbi.nlm.nih.gov/34243319
Autor:
A. Terakado, Akiyoshi Hatayama, M. Fukumoto, Tsuyoshi Imai, Sotaro Yamashita, Makoto Ichimura, Ryutaro Minami, Junko Kohagura, Tsuyoshi Kariya, Yousuke Nakashima, Satoshi Togo, Kunpei Nojiri, M. Hirata, Mamoru Shoji, M. M. Islam, Keiji Sawada, Suguru Masuzaki, Tomoharu Numakura, Tsubasa Yoshimoto, T. Nakano, Md. Shahinul Islam, Nobuyuki Asakura, Naomichi Ezumi, Mizuki Sakamoto, Ryuya Ikezoe, Takaaki Iijima, Masayuki Yoshikawa
Publikováno v:
Nuclear Materials and Energy, Vol 18, Iss, Pp 216-221 (2019)
The transition of a detached to attached plasma experiment has been performed in GAMMA 10/PDX by applying an additional plasma heating pulse of electron cyclotron heating (ECH). In a plasma detachment experiment, a short pulse (25 ms) of ECH was appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e2e8ff848d9fab9b77061d7147e120f
http://www.sciencedirect.com/science/article/pii/S2352179118302564
http://www.sciencedirect.com/science/article/pii/S2352179118302564
Autor:
Masayuki YOSHIKAWA, Yousuke NAKASHIMA, Junko KOHAGURA, Yoriko SHIMA, Hiroyuki NAKANISHI, Youhei TAKEDA, Shinji KOBAYASHI, Ryutaro MINAMI, Naomichi EZUMI, Mizuki SAKAMOTO
Publikováno v:
Plasma and Fusion Research. 17:1202093-1202093
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::152f2f1e6806751b3a30280a9b9db490
https://doi.org/10.1585/pfr.17.1202093
https://doi.org/10.1585/pfr.17.1202093
Autor:
N. Oyama, Kohji Yamamoto, Kiyomasa Watanabe, S. Inagaki, Junko Kohagura, Tokihiko Tokuzawa, R. Imazawa, Hiroshi Idei, Akira Ejiri, Keiji Tanaka, Teruo Saito, Shin Kubo
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Two types of back scattering systems are utilized for high temperature fusion plasma turbulence study. W-band backscattering system is used for measuring the electron Larmor radius scale turbulence and around Q-band frequency comb Doppler backscatter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18c368a882d9b80f7c80930601aa86d3
https://doi.org/10.1109/irmmw-thz46771.2020.9370553
https://doi.org/10.1109/irmmw-thz46771.2020.9370553
Autor:
Noriyasu Ohno, Kunpei Nojiri, A. Terakado, Kazuya Ichimura, Naomichi Ezumi, Masayuki Yoshikawa, K. Oki, Yousuke Nakashima, Suguru Masuzaki, Keiji Sawada, Mizuki Sakamoto, K. Shimizu, Junko Kohagura, Satoshi Togo, M. Fukumoto
Publikováno v:
Nuclear Materials and Energy, Vol 12, Iss, Pp 1004-1009 (2017)
In the tandem mirror GAMMA 10/PDX, molecular activated recombination (MAR) leading to plasma detachment has been observed by additional hydrogen gas injection to the divertor simulation plasma (i.e. end loss plasma) which is exposed to the V-shaped t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86c865c76be01aec11db755ddbdf3332
https://doi.org/10.1016/j.nme.2017.05.001
https://doi.org/10.1016/j.nme.2017.05.001
Autor:
Masayuki Yoshikawa, Daisuke Kuwahara, Junko Kohagura, Xiaolong Wang, Tokihiko Tokuzawa, Zhewang Ma, Atsushi Mase
Publikováno v:
Microwave and Optical Technology Letters. 59:1245-1248
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adcfb34931944061cf8b7717d3a0737d
https://doi.org/10.1002/mop.30513
https://doi.org/10.1002/mop.30513
Autor:
Md. Shahinul Islam, Sotaro Yamashita, Yousuke Nakashima, Mizuki Sakamoto, Makoto Ichimura, Ryuya Ikezoe, Naomichi Ezumi, Kazuya Ichimura, Toru Iijima, R. Perillo, Akiyoshi Hatayama, Yosuke Kinoshita, Ryutaro Minami, Noriyasu Ohno, Hirohiko Tanaka, S. Sawada, Satoshi Togo, Shinichiro Kado, A. Terakado, Masayuki Yoshikawa, Tomohiro Mikami, Mafumi Hirata, S. Jang, M. M. Islam, Junko Kohagura, Toshiki Hara, Akira Tonegawa, Tsuyoshi Kariya, Suguru Masuzaki, Tomoharu Numakura, Isao Katanuma, Tsuyoshi Imai, Tsubasa Yoshimoto, Kunpei Nojiri, T. Nakano
Publikováno v:
Nuclear Fusion, 59, 066030
Nuclear Fusion, 59(6):066030. Institute of Physics
Nuclear Fusion, 59(6):066030. Institute of Physics
We have investigated the synergistic effect of a combination of various impurity gases and hydrogen gas on plasma detachment of high temperature plasma, equivalent to scrape-off layer plasma of tokamaks in the GAMMA 10/PDX end region, utilizing an op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d21b7528c45625ab5f1593d70f6c536e
https://www.differ.nl/bibcite/reference/8505
https://www.differ.nl/bibcite/reference/8505
Autor:
Yoriko Shima, R. Al, Junko Kohagura, Yousuke Nakashima, Mizuki Sakamoto, J.W.M. Vernimmen, Hennie van der Meiden, Masayuki Yoshikawa
Publikováno v:
AIP Advances, 9, 085225
AIP Advances, Vol 9, Iss 8, Pp 085225-085225-7 (2019)
AIP Advances, Vol 9, Iss 8, Pp 085225-085225-7 (2019)
A frequency multiplied microwave interferometer, a Hα line emission measurement system, and a high speed camera system were installed on the Pilot-PSI device for low frequency fluctuation study in the detached plasma condition. The two dimensional H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bd7b912711500aa370d6de4eb180cf1
https://www.differ.nl/bibcite/reference/8457
https://www.differ.nl/bibcite/reference/8457