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Classical Cross-Field Self-Diffusion Due to Finite Larmor Radius 有限拉莫尔半径导致的经典跨场自扩散
IF 0.8
Plasma and Fusion Research Pub Date : 2023-12-08 DOI: 10.1585/pfr.18.1203090
Tomonori Takizuka, S. Togo, K. Ibano, Yuki Homma
{"title":"Classical Cross-Field Self-Diffusion Due to Finite Larmor Radius","authors":"Tomonori Takizuka, S. Togo, K. Ibano, Yuki Homma","doi":"10.1585/pfr.18.1203090","DOIUrl":"https://doi.org/10.1585/pfr.18.1203090","url":null,"abstract":"","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"64 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139011376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anomalous Ion Heating in Lower Hybrid Wave Sustained Plasmas on the TST-2 Spherical Tokamak Device TST-2 球形托卡马克装置上下层混合波持续等离子体中的异常离子加热
IF 0.8
Plasma and Fusion Research Pub Date : 2023-12-08 DOI: 10.1585/pfr.18.1402089
K. Iwasaki, A. Ejiri, N. Tsujii, Kouji Shinohara, O. Watanabe, Seowon Jang, Yi Peng, Yu-Ting Lin, F. Adachi, Yiming Tian
{"title":"Anomalous Ion Heating in Lower Hybrid Wave Sustained Plasmas on the TST-2 Spherical Tokamak Device","authors":"K. Iwasaki, A. Ejiri, N. Tsujii, Kouji Shinohara, O. Watanabe, Seowon Jang, Yi Peng, Yu-Ting Lin, F. Adachi, Yiming Tian","doi":"10.1585/pfr.18.1402089","DOIUrl":"https://doi.org/10.1585/pfr.18.1402089","url":null,"abstract":"","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"172 ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139011409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Observation of Intermittent Chaos Caused by Delayed Feedback in a Laboratory Plasma 观测实验室等离子体中延迟反馈引起的间歇性混沌
IF 0.8
Plasma and Fusion Research Pub Date : 2023-11-27 DOI: 10.1585/pfr.18.1401088
Takao Fukuyama, Yutaro Sueyoshi
{"title":"Observation of Intermittent Chaos Caused by Delayed Feedback in a Laboratory Plasma","authors":"Takao Fukuyama, Yutaro Sueyoshi","doi":"10.1585/pfr.18.1401088","DOIUrl":"https://doi.org/10.1585/pfr.18.1401088","url":null,"abstract":"","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"16 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139233355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrahigh-Flux Concerting Materials 超高通量调合材料
Plasma and Fusion Research Pub Date : 2023-10-23 DOI: 10.1585/pfr.18.2505085
Takuya NAGASAKA, Makoto I. KOBAYASHI, Teruya TANAKA, Sadatsugu TAKAYAMA, Hiroyuki NOTO, Jingjie SHEN, Tatsuya HINOKI, Kiyohiro YABUUCHI, Katsuaki TANABE, Ryuta KASADA, Sosuke KONDO, Shuhei NOGAMI, Hiroki KURITA, Naoyuki HASHIMOTO, Yuji YAMAUCHI, Yasuhisa OYA, Takumi CHIKADA, Yuji HATANO, Kazunari KATAYAMA, Makoto OYA, Naoko OONO, Yoshitaka MORI
{"title":"Ultrahigh-Flux Concerting Materials","authors":"Takuya NAGASAKA, Makoto I. KOBAYASHI, Teruya TANAKA, Sadatsugu TAKAYAMA, Hiroyuki NOTO, Jingjie SHEN, Tatsuya HINOKI, Kiyohiro YABUUCHI, Katsuaki TANABE, Ryuta KASADA, Sosuke KONDO, Shuhei NOGAMI, Hiroki KURITA, Naoyuki HASHIMOTO, Yuji YAMAUCHI, Yasuhisa OYA, Takumi CHIKADA, Yuji HATANO, Kazunari KATAYAMA, Makoto OYA, Naoko OONO, Yoshitaka MORI","doi":"10.1585/pfr.18.2505085","DOIUrl":"https://doi.org/10.1585/pfr.18.2505085","url":null,"abstract":"","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"1 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135460689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Increased Relative Velocity due to Enhanced Magnetic Pressure Gradient for the Collision Experiment of High-Beta Plasmoids 高β等离子体碰撞实验中磁压力梯度增大导致相对速度增大
Plasma and Fusion Research Pub Date : 2023-10-18 DOI: 10.1585/pfr.18.2401087
Taichi SEKI, Daichi KOBAYASHI, Tomohiko ASAI, Tsutomu TAKAHASHI, Jordan MORELLI
{"title":"Increased Relative Velocity due to Enhanced Magnetic Pressure Gradient for the Collision Experiment of High-Beta Plasmoids","authors":"Taichi SEKI, Daichi KOBAYASHI, Tomohiko ASAI, Tsutomu TAKAHASHI, Jordan MORELLI","doi":"10.1585/pfr.18.2401087","DOIUrl":"https://doi.org/10.1585/pfr.18.2401087","url":null,"abstract":"","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135942994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Observation of Quasi-Periodic Two-Dimensional Velocity Fields in Plasma Using Tomographic Laser-Induced Fluorescence Spectroscopy 等离子体准周期二维速度场的层析激光诱导荧光光谱观察
Plasma and Fusion Research Pub Date : 2023-10-12 DOI: 10.1585/pfr.18.1201086
Hiroyuki ARAKAWA, Makoto SASAKI, Shigeru INAGAKI, Kenichiro TERASAKA, Yuichi KAWACHI, Fumiyoshi KIN, Takuma YAMADA, Yoshihiko NAGASHIMA, Akihide FUJISAWA
{"title":"Observation of Quasi-Periodic Two-Dimensional Velocity Fields in Plasma Using Tomographic Laser-Induced Fluorescence Spectroscopy","authors":"Hiroyuki ARAKAWA, Makoto SASAKI, Shigeru INAGAKI, Kenichiro TERASAKA, Yuichi KAWACHI, Fumiyoshi KIN, Takuma YAMADA, Yoshihiko NAGASHIMA, Akihide FUJISAWA","doi":"10.1585/pfr.18.1201086","DOIUrl":"https://doi.org/10.1585/pfr.18.1201086","url":null,"abstract":"Recently, a new method that applies vector tomography to laser-induced fluorescence has been introduced, enabling the measurement of quasi-periodic two-dimensional velocity field in plasma [H. Arakawa et al., Plasma Fusion Res. 18, 1401032 (2023)]. In this study, we experimentally demonstrated this method in a linear magnetized plasma and presented the initial measurement results. The observed two-dimensional velocity field allowed the evaluation of Reynolds force and its energy transfer.","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136057999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deformation Induced by Magnetic Field on GaInSn Flow Surface 磁场在GaInSn流表面引起的变形
Plasma and Fusion Research Pub Date : 2023-10-12 DOI: 10.1585/pfr.18.2405083
Ryosuke HIRAKA, Jabir AL SALAMI, Takumi TSUGIKI, Kazuaki HANADA, Changhong HU
{"title":"Deformation Induced by Magnetic Field on GaInSn Flow Surface","authors":"Ryosuke HIRAKA, Jabir AL SALAMI, Takumi TSUGIKI, Kazuaki HANADA, Changhong HU","doi":"10.1585/pfr.18.2405083","DOIUrl":"https://doi.org/10.1585/pfr.18.2405083","url":null,"abstract":"Liquid metal divertors are expected to have higher thermal load tolerance compared with solid divertors. Precise prediction of liquid metal behavior using magnetohydrodynamic (MHD) simulation enables the practical designing of a liquid metal divertor. The aim of this study is to confirm the accuracy of an MHD simulation that is developed for liquid metal flow prediction. As a benchmark test of the MHD simulation, a comparison of the Galinstan flowing through a vertical magnetic field and the simulated results was performed, and qualitative reproduction using the MHD simulation was confirmed. In addition, the source of wave creation and the causes of failure of the quantitative reproduction were investigated, which is may caused by the variations of the Galinstan surface tension.","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136058000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Energy Ion Generation During Difference-Frequency ICRF Wave Heating in GAMMA 10/PDX 伽玛10/PDX中差频ICRF波加热时高能离子的产生
Plasma and Fusion Research Pub Date : 2023-10-12 DOI: 10.1585/pfr.18.2402084
Yudai SUGIMOTO, Mafumi HIRATA, Yousuke NAKASHIMA, Makoto ICHIMURA, Doyeon KIM, Takaaki KOZAWA, Shunya ENDO, Ryo KOBAYASHI, Ryuya IKEZOE, Naomichi EZUMI, Satoshi TOGO, Masayuki YOSHIKAWA, Junko KOHAGURA, Mizuki SAKAMOTO
{"title":"High-Energy Ion Generation During Difference-Frequency ICRF Wave Heating in GAMMA 10/PDX","authors":"Yudai SUGIMOTO, Mafumi HIRATA, Yousuke NAKASHIMA, Makoto ICHIMURA, Doyeon KIM, Takaaki KOZAWA, Shunya ENDO, Ryo KOBAYASHI, Ryuya IKEZOE, Naomichi EZUMI, Satoshi TOGO, Masayuki YOSHIKAWA, Junko KOHAGURA, Mizuki SAKAMOTO","doi":"10.1585/pfr.18.2402084","DOIUrl":"https://doi.org/10.1585/pfr.18.2402084","url":null,"abstract":"One of the greatest challenges of simulating the high heat flux on the divertor in linear plasma devices is the achievement of ion temperatures of > 100 eV under high densities (≥1019 m−3). The slow wave in the ion cyclotron range of frequency has been employed for ion heating in GAMMA 10/PDX and demonstrated its high efficiency at middle densities of 1018 m−3. However, at high densities (≥1019 m−3), exciting the slow wave in the center of the plasma by external antennas becomes challenging. Alternatively, we have demonstrated the excitation of the difference-frequency (DF) slow wave using two high-density-applicable fast waves. In this study, we first applied the charge-exchange neutral particle analyzer (CX-NPA) to a DF wave heating experiment. Even when the bulk temperature did not increase significantly, the high-energy ions in the > 0.5 keV range were measured during the experiment. Such high-energy ions were only measured in the central line of sight of CX-NPA, indicating that the power deposition from the DF wave was largely centered and differed greatly from the normal heating scheme using external antennas. This result will motivate further pursue of exploiting nonlinearity of plasma media to produce different heating accessibilities.","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136058142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Volumetric Recombination in the Linear ECR Plasma Device NUMBER 线性ECR等离子体器件数量中的体积重组
Plasma and Fusion Research Pub Date : 2023-10-12 DOI: 10.1585/pfr.18.2401082
Konan YAGASAKI, Atsushi OKAMOTO, Takaaki FUJITA, Minami SUGIMOTO, Shunya HIGUCHI, Muneo KOIKE, Koki SATO, Yuto YAMADA
{"title":"Volumetric Recombination in the Linear ECR Plasma Device NUMBER","authors":"Konan YAGASAKI, Atsushi OKAMOTO, Takaaki FUJITA, Minami SUGIMOTO, Shunya HIGUCHI, Muneo KOIKE, Koki SATO, Yuto YAMADA","doi":"10.1585/pfr.18.2401082","DOIUrl":"https://doi.org/10.1585/pfr.18.2401082","url":null,"abstract":"A plasma recombination experiment was carried out using the linear electron cyclotron resonance (ECR) plasma device NUMBER as a preliminary step for forming a detached plasma. The electron density measured by an electrostatic probe in a divertor-simulated region was successfully increased up to approximately 6×1017 m−3. This increase was realized by installing an additional gas feed system to the region and using a circular polarizer to control the microwave polarization. Passive spectroscopic measurements performed on the high-density plasma yielded line spectra of He I 23P−n3D for the principal quantum number n ≤13, which are characterstic of helium recombining plasma. The line spectra were used to calculate an electron temperature of approximately 0.055 eV and an electron density of approximately 1.33 × 1018 m−3 by the Boltzmann plot method and Saha–Boltzmann equation, respectively.","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135923141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Observation of Interaction between Fast Ions and Turbulence in Large Helical Device 大型螺旋装置中快离子与湍流相互作用的观察
Plasma and Fusion Research Pub Date : 2023-09-25 DOI: 10.1585/pfr.18.2402069
Hikona SAKAI, Kenji TANAKA, Toshiki KINOSHITA, Kunihiro OGAWA
{"title":"Observation of Interaction between Fast Ions and Turbulence in Large Helical Device","authors":"Hikona SAKAI, Kenji TANAKA, Toshiki KINOSHITA, Kunihiro OGAWA","doi":"10.1585/pfr.18.2402069","DOIUrl":"https://doi.org/10.1585/pfr.18.2402069","url":null,"abstract":"Systematic experiments were carried out in the 23rd Large Helical Device experiment campaign to explore the interaction between fast ions and ion-scale turbulence focusing on the impact of varying the power of the neutral beam (NB) injection. During the NB heating, two distinct phases of turbulence reduction were observed. The first phase was a transient reduction of about 10 msec immediately following the initiation of the NB injection. This reduction in turbulence was noticeable even while the electron density and temperature profiles remained nearly unchanged. The second phase involved a continuous reduction that maintained a lower turbulence level throughout the duration of the NB injection. The physics mechanisms underlying these phenomena are not fully understood yet. However, it is likely that two distinct processes of turbulence stabilization, each corresponding to the transient and continuous reduction phases, are at work due to the influence of the fast ions.","PeriodicalId":20247,"journal":{"name":"Plasma and Fusion Research","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135865351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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