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Journal Articles

Development of a large-bore plasma window with an indirectly heated hollow cathode

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K. Yamasaki, M. Sumino, Y. Sunada, O. Yanagi, K. Okuda, J. Kono, A. Saito, D. Mori, K. Tomita, Y. Pan, N. Tamura, C. Suzuki, H. Okuno, F. Guo, S. Namba
Journal: Journal of Applied Physics
J. Appl. Phys. 134, 093302 (2023)
https://doi.org/10.1063/5.0166798
Published: September 2023
View articletitled, Development of a large-bore plasma window with an indirectly heated hollow cathode
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Journal Articles

Indirect energy transfer channel between fast ions via nuclear elastic scattering observed on the large helical device

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H. Matsuura, K. Kimura, D. Umezaki, K. Ogawa, M. Isobe, Y. Kawamoto, T. Oishi, M. Goto, N. Tamura, M. Osakabe, T. Nishitani, S. Sugiyama
Journal: Physics of Plasmas
Phys. Plasmas 29, 092502 (2022)
https://doi.org/10.1063/5.0097720
Published: September 2022
View articletitled, Indirect energy transfer channel between fast ions via nuclear elastic scattering observed on the large helical device
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Journal Articles

Discharge characteristics of steady-state high-density plasma source based on cascade arc discharge with hollow cathode

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K. Yamasaki, O. Yanagi, Y. Sunada, K. Hatta, R. Shigesada, M. Sumino, T. Yamaguchi, Md. Anwarul Islam, N. Tamura, H. Okuno, S. Namba
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 053502 (2022)
https://doi.org/10.1063/5.0076388
Published: May 2022
View articletitled, Discharge characteristics of steady-state high-density plasma source based on cascade arc discharge with hollow cathode
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Journal Articles

A new multi-tracer pellet injection for a simultaneous study of low- and mid/high-Z impurities in high-temperature plasmas

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N. Tamura, M. Yoshinuma, X. Yin, K. Ida, C. Suzuki, M. Shoji, K. Mukai, H. Funaba
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 92, 063516 (2021)
https://doi.org/10.1063/5.0043495
Published: June 2021
View articletitled, A new multi-tracer pellet injection for a simultaneous study of low- and mid/high-Z impurities in high-temperature plasmas
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Journal Articles

Charge-state independent anomalous transport for a wide range of different impurity species observed at Wendelstein 7-X

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A. Langenberg, Th. Wegner, N. A. Pablant, O. Marchuk, B. Geiger, N. Tamura, R. Bussiahn, M. Kubkowska, A. Mollén, P. Traverso, H. M. Smith, G. Fuchert, S. Bozhenkov, H. Damm, E. Pasch, K.-J. Brunner, J. Knauer, M. Beurskens, R. Burhenn, R. C. Wolf, W7-X Team
Journal: Physics of Plasmas
Phys. Plasmas 27, 052510 (2020)
https://doi.org/10.1063/5.0004462
Published: May 2020
View articletitled, Charge-state independent anomalous transport for a wide range of different impurity species observed at Wendelstein 7-X
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Journal Articles

High-density cascade arc plasma sources for application to plasma windows for virtual vacuum interfaces

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S. Namba, Y. Iwamoto, Y. Asano, T. Shugyo, K. Fukuyama, N. Ikoma, H. Okuno, N. Tamura, T. Endo
Journal: Physics of Plasmas
Phys. Plasmas 25, 113511 (2018)
https://doi.org/10.1063/1.5070071
Published: November 2018
View articletitled, High-density cascade arc plasma sources for application to plasma windows for virtual vacuum interfaces
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Journal Articles

Tracer-Encapsulated Solid Pellet (TESPEL) injection system for Wendelstein 7-X

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R. Bussiahn, N. Tamura, K. J. McCarthy, R. Burhenn, H. Hayashi, R. Laube, T. Klinger, LHD Experiment Group, W7-X Team
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 10K112 (2018)
https://doi.org/10.1063/1.5038844
Published: October 2018
View articletitled, Tracer-Encapsulated Solid Pellet (TESPEL) injection system for Wendelstein 7-X
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Journal Articles

Development of a tracer-containing compact-toroid injection system

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D. Kobayashi, T. Asai, S. Yamada, Y. Ishikawa, N. Tamura, Y. Narushima
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 10I111 (2018)
https://doi.org/10.1063/1.5039310
Published: September 2018
View articletitled, Development of a tracer-containing compact-toroid injection system
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Journal Articles

Observation of the ECH effect on the impurity accumulation in the LHD

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N. Tamura, C. Suzuki, S. Satake, Y. Nakamura, M. Nunami, H. Funaba, K. Tanaka, M. Yoshinuma, K. Ida, S. Sudo, LHD Experiment Group
Journal: Physics of Plasmas
Phys. Plasmas 24, 056118 (2017)
https://doi.org/10.1063/1.4983626
Published: May 2017
View articletitled, Observation of the ECH effect on the impurity accumulation in the LHD
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Journal Articles

Observation of the inward propagation of spontaneous toroidal flow from the plasma boundary in LHD

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K. Kamiya, K. Ida, K. Itoh, S.-I. Itoh, M. Yoshinuma, M. Yokoyama, S. Kubo, H. Tsuchiya, N. Tamura, S. Masuzaki, C. Suzuki, T. Akiyama, LHD Experiment Group
Journal: Physics of Plasmas
Phys. Plasmas 23, 102309 (2016)
https://doi.org/10.1063/1.4965908
Published: October 2016
View articletitled, Observation of the inward propagation of spontaneous toroidal flow from the plasma boundary in LHD
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Journal Articles

Tracer-Encapsulated Solid Pellet (TESPEL) injection system for the TJ-II stellarator

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N. Tamura, K. J. McCarthy, H. Hayashi, S. K. Combs, C. Foust, R. García, N. Panadero, E. Pawelec, J. Hernández Sánchez, M. Navarro, A. Soleto
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 11D619 (2016)
https://doi.org/10.1063/1.4962303
Published: September 2016
View articletitled, Tracer-Encapsulated Solid Pellet (TESPEL) injection system for the TJ-II stellarator
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Journal Articles

Development of a new tracer-encapsulated solid pellet injection system for more precise control of tracer-impurity-deposit location in LHD

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N. Tamura, M. Shoji, C. Suzuki, H. Funaba, H. Hayashi, H. Maeno, M. Yokota, H. Ogawa, S. Sudo
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 11D615 (2016)
https://doi.org/10.1063/1.4962041
Published: September 2016
View articletitled, Development of a new tracer-encapsulated solid pellet injection system for more precise control of tracer-impurity-deposit location in LHD
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Journal Articles

Development of a cascade arc discharge source for an atmosphere-vacuum interface device

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S. Namba, T. Endo, S. Fujino, C. Suzuki, N. Tamura
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 083503 (2016)
https://doi.org/10.1063/1.4960425
Published: August 2016
View articletitled, Development of a cascade arc discharge source for an atmosphere-vacuum interface device
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Journal Articles

Synthesizing skyrmion bound pairs in Fe-Gd thin films

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J. C. T Lee, J. J. Chess, S. A. Montoya, X. Shi, N. Tamura, S. K. Mishra, P. Fischer, B. J. McMorran, S. K. Sinha, E. E. Fullerton, S. D. Kevan, S. Roy
Journal: Applied Physics Letters
Appl. Phys. Lett. 109, 022402 (2016)
https://doi.org/10.1063/1.4955462
Published: July 2016
View articletitled, Synthesizing skyrmion bound pairs in Fe-Gd thin films
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Includes: Supplementary data
Journal Articles

Imaging polychromator for density measurements of polystyrene pellet cloud on the Large Helical Device

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I. A. Sharov, V. Yu. Sergeev, I. V. Miroshnikov, N. Tamura, B. V. Kuteev, S. Sudo
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 86, 043505 (2015)
https://doi.org/10.1063/1.4919001
Published: April 2015
View articletitled, Imaging polychromator for density measurements of polystyrene pellet cloud on the Large Helical Device
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Journal Articles

Explicit approximations to estimate the perturbative diffusivity in the presence of convectivity and damping. I. Semi-infinite slab approximations

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M. van Berkel, H. J. Zwart, N. Tamura, G. M. D. Hogeweij, S. Inagaki, M. R. de Baar, K. Ida
Journal: Physics of Plasmas
Phys. Plasmas 21, 112507 (2014)
https://doi.org/10.1063/1.4901309
Published: November 2014
View articletitled, Explicit approximations to estimate the perturbative diffusivity in the presence of convectivity and damping. I. Semi-infinite slab approximations
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Journal Articles

Explicit approximations to estimate the perturbative diffusivity in the presence of convectivity and damping. III. Cylindrical approximations for heat waves traveling inwards

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M. van Berkel, N. Tamura, G. M. D. Hogeweij, H. J. Zwart, S. Inagaki, M. R. de Baar, K. Ida
Journal: Physics of Plasmas
Phys. Plasmas 21, 112509 (2014)
https://doi.org/10.1063/1.4901311
Published: November 2014
View articletitled, Explicit approximations to estimate the perturbative diffusivity in the presence of convectivity and damping. III. Cylindrical approximations for heat waves traveling inwards
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Journal Articles

Explicit approximations to estimate the perturbative diffusivity in the presence of convectivity and damping. II. Semi-infinite cylindrical approximations

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M. van Berkel, G. M. D. Hogeweij, N. Tamura, H. J. Zwart, S. Inagaki, M. R. de Baar, K. Ida
Journal: Physics of Plasmas
Phys. Plasmas 21, 112508 (2014)
https://doi.org/10.1063/1.4901310
Published: November 2014
View articletitled, Explicit approximations to estimate the perturbative diffusivity in the presence of convectivity and damping. II. Semi-infinite cylindrical approximations
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Journal Articles

Development of steady-state operation using ion cyclotron heating in the Large Helical Device

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H. Kasahara, T. Seki, K. Saito, R. Seki, R. Kumazawa, Y. Yoshimura, S. Kubo, T. Shimozuma, H. Igami, H. Takahashi, K. Nagasaki, Y. Ueda, M. Tokitani, N. Ashikawa, M. Shoji, T. Wakatsuki, S. Kamio, H. Tsuchiya, S. Yoshimura, N. Tamura, C. Suzuki, H. Yamada, T. Mutoh, LHD Experiment Group
Journal: Physics of Plasmas
Phys. Plasmas 21, 061505 (2014)
https://doi.org/10.1063/1.4884363
Published: June 2014
View articletitled, Development of steady-state operation using ion cyclotron heating in the Large Helical Device
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Journal Articles

Observation of multi-scale turbulence and non-local transport in LHD plasmas

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T. Tokuzawa, S. Inagaki, K. Ida, K. Itoh, T. Ido, A. Shimizu, H. Takahashi, S. Kitajima, N. Tamura, M. Yoshinuma, H. Tsuchiya, I. Yamada, K. Tanaka, T. Akiyama, Y. Nagayama, K. Kawahata, K. Y. Watanabe, H. Yamada, LHD Experiment Group
Journal: Physics of Plasmas
Phys. Plasmas 21, 055904 (2014)
https://doi.org/10.1063/1.4876619
Published: May 2014
View articletitled, Observation of multi-scale turbulence and non-local transport in LHD plasmas
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