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Y. Nagashima
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Journal Articles

Rotational movement analysis based on Fourier-rectangular function transform for cylindrical plasma

D. Nishimura, A. Fujisawa, K. Yamasaki, Y. Nagashima, C. Moon, T. Nishizawa, T.-K. Kobayashi, T. Kobayashi, A. Shimizu, T. Tokuzawa, T. Ido
Journal: Journal of Applied Physics
J. Appl. Phys. 134, 113302 (2023)
https://doi.org/10.1063/5.0165318
Published: September 2023
View article titled, Rotational movement analysis based on Fourier-rectangular function transform for cylindrical plasma
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Journal Articles

Conceptual design of a heavy ion beam probe for the QUEST spherical tokamak

T. Ido, M. Hasegawa, R. Ikezoe, T. Onchi, K. Hanada, H. Idei, K. Kuroda, Y. Nagashima
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 113516 (2022)
https://doi.org/10.1063/5.0101770
Published: November 2022
View article titled, Conceptual design of a heavy ion beam probe for the QUEST spherical tokamak
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Journal Articles

Dynamic interaction between fluctuations with different origins in a linear magnetized plasma

Y. Kawachi, S. Inagaki, M. Sasaki, Y. Kosuga, K. Yamasaki, T. Kobayashi, F. Kin, T. Yamada, H. Arakawa, Y. Nagashima, C. Moon, N. Kasuya, A. Fujisawa
Journal: Physics of Plasmas
Phys. Plasmas 28, 112302 (2021)
https://doi.org/10.1063/5.0065887
Published: November 2021
View article titled, Dynamic interaction between fluctuations with different origins in a linear magnetized plasma
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Journal Articles

Conceptual design of heavy ion beam probes on the PLATO tokamak

T. Ido, A. Fujisawa, K. Takemura, T.-K. Kobayashi, D. Nishimura, N. Kasuya, A. Fukuyama, C. Moon, K. Yamasaki, S. Inagaki, Y. Nagashima, T. Yamada
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 92, 053553 (2021)
https://doi.org/10.1063/5.0041814
Published: May 2021
View article titled, Conceptual design of heavy ion beam probes on the PLATO tokamak
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Journal Articles

Modal polarization analysis using Fourier-rectangular function transform in a cylindrical plasma

D. Nishimura, A. Fujisawa, Y. Nagashima, C. Moon, K. Yamasaki, T.-K. Kobayashi, S. Inagaki, T. Yamada, Y. Kawachi, N. Kasuya, Y. Kosuga, M. Sasaki
Journal: Journal of Applied Physics
J. Appl. Phys. 129, 093301 (2021)
https://doi.org/10.1063/5.0037352
Published: March 2021
View article titled, Modal polarization analysis using Fourier-rectangular function transform in a cylindrical plasma
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Journal Articles

Tomography system for two-dimensional observation of fluctuation in magnetized plasma

K. Yamasaki, A. Fujisawa, Y. Nagashima, C. Moon, S. Inagaki, T. Yamada
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 91, 033502 (2020)
https://doi.org/10.1063/1.5144480
Published: March 2020
View article titled, Tomography system for two-dimensional observation of fluctuation in magnetized plasma
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Journal Articles

Ion-induced processes in polymer composite materials: Positron annihilation spectroscopy in combination with UV-Vis absorption and Raman spectroscopy

T. Kavetskyy, A. Kuczumow, K. Iida, Y. Nagashima, M. O. Liedke, M. Butterling, A. Wagner, R. Krause-Rehberg, O. Šauša, T. Petkova, V. Boev, A. Kiv, A. L. Stepanov
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2182, 050024 (2019)
https://doi.org/10.1063/1.5135867
Published: December 2019
View article titled, Ion-induced processes in polymer composite materials: Positron annihilation spectroscopy in combination with UV-Vis absorption and Raman spectroscopy
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Journal Articles

Fourier-rectangular function analysis for cylindrical plasma images

K. Yamasaki, A. Fujisawa, Y. Nagashima, C. Moon, S. Inagaki, N. Kasuya, Y. Kosuga, M. Sasaki, T. Yamada
Journal: Journal of Applied Physics
J. Appl. Phys. 126, 043304 (2019)
https://doi.org/10.1063/1.5108717
Published: July 2019
View article titled, Fourier-rectangular function analysis for cylindrical plasma images
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Journal Articles

Roles of solitary eddy and splash in drift wave–zonal flow system in a linear magnetized plasma

H. Arakawa, M. Sasaki, S. Inagaki, Y. Kosuga, T. Kobayashi, N. Kasuya, T. Yamada, Y. Nagashima, F. Kin, A. Fujisawa, K. Itoh, S.-I. Itoh
Journal: Physics of Plasmas
Phys. Plasmas 26, 052305 (2019)
https://doi.org/10.1063/1.5094577
Published: May 2019
View article titled, Roles of solitary eddy and splash in drift wave–zonal flow system in a linear magnetized plasma
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Journal Articles

Observations of radially elongated particle flux induced by streamer in a linear magnetized plasma

F. Kin, A. Fujisawa, K. Itoh, Y. Kosuga, M. Sasaki, S. Inagaki, Y. Nagashima, T. Yamada, N. Kasuya, K. Yamasaki, K. Hasamada, B. Y. Zhang, Y. Kawachi, H. Arakawa, T. Kobayashi, S.-I. Itoh
Journal: Physics of Plasmas
Phys. Plasmas 26, 042306 (2019)
https://doi.org/10.1063/1.5093218
Published: April 2019
View article titled, Observations of radially elongated particle flux induced by streamer in a linear magnetized plasma
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Journal Articles

A high-quality and energy-tunable positronium beam system employing a trap-based positron beam

FeaturedScilight
K. Michishio, L. Chiari, F. Tanaka, N. Oshima, Y. Nagashima
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 90, 023305 (2019)
https://doi.org/10.1063/1.5060619
Published: February 2019
View article titled, A high-quality and energy-tunable positronium beam system employing a trap-based positron beam
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Journal Articles

Combined methods of moment vectors and Stokes parameters to analyze tomographic image of plasma turbulence

A. Fujisawa, Y. Nagashima, K. Yamasaki, S. Inagaki, T. Yamada, M. Sasaki
Journal: Physics of Plasmas
Phys. Plasmas 26, 012305 (2019)
https://doi.org/10.1063/1.5048970
Published: January 2019
View article titled, Combined methods of moment vectors and Stokes parameters to analyze tomographic image of plasma turbulence
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Journal Articles

Extraction of nonlinear waveform in turbulent plasma

FeaturedScilight
F. Kin, K. Itoh, A. Fujisawa, Y. Kosuga, M. Sasaki, T. Yamada, S. Inagaki, S.-I. Itoh, T. Kobayashi, Y. Nagashima, N. Kasuya, H. Arakawa, K. Yamasaki, K. Hasamada
Journal: Physics of Plasmas
Phys. Plasmas 25, 062304 (2018)
https://doi.org/10.1063/1.5027124
Published: May 2018
View article titled, Extraction of nonlinear waveform in turbulent plasma
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Journal Articles

Topological bifurcation of helical flows in magnetized plasmas with density gradient and parallel flow shear

Editor’s Pick
M. Sasaki, N. Kasuya, K. Itoh, S. Toda, T. Yamada, Y. Kosuga, Y. Nagashima, T. Kobayashi, H. Arakawa, K. Yamasaki, A. Fujisawa, S. Inagaki, S.-I. Itoh
Journal: Physics of Plasmas
Phys. Plasmas 24, 112103 (2017)
https://doi.org/10.1063/1.5000343
Published: November 2017
View article titled, Topological bifurcation of helical flows in magnetized plasmas with density gradient and parallel flow shear
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Journal Articles

A proposal of Fourier-Bessel expansion with optimized ensembles of bases to analyse two dimensional image

K. Yamasaki, A. Fujisawa, Y. Nagashima
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 88, 093507 (2017)
https://doi.org/10.1063/1.5000744
Published: September 2017
View article titled, A proposal of Fourier-Bessel expansion with optimized ensembles of bases to analyse two dimensional image
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Journal Articles

Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry

Z. Wang, K. Hanada, N. Yoshida, T. Shimoji, M. Miyamoto, Y. Oya, H. Zushi, H. Idei, K. Nakamura, A. Fujisawa, Y. Nagashima, M. Hasegawa, S. Kawasaki, A. Higashijima, H. Nakashima, T. Nagata, A. Kawaguchi, T. Fujiwara, K. Araki, O. Mitarai, A. Fukuyama, Y. Takase, K. Matsumoto
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 88, 093502 (2017)
https://doi.org/10.1063/1.5000739
Published: September 2017
View article titled, Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry
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Journal Articles

Measurements of edge plasma parameters during internal reconnection events in the TST-2 spherical tokamak

H. Furui, A. Ejiri, Y. Nagashima, Y. Takase, M. Sonehara, N. Tsujii, B. Roidl, T. Shinya, H. Togashi, H. Homma, K. Nakamura, T. Takeuchi, S. Yajima, Y. Yoshida, K. Toida, W. Takahashi, H. Yamazaki
Journal: Physics of Plasmas
Phys. Plasmas 24, 062504 (2017)
https://doi.org/10.1063/1.4985077
Published: June 2017
View article titled, Measurements of edge plasma parameters during internal reconnection events in the TST-2 spherical tokamak
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Journal Articles

Structure formation in parallel ion flow and density profiles by cross-ferroic turbulent transport in linear magnetized plasma

T. Kobayashi, S. Inagaki, Y. Kosuga, M. Sasaki, Y. Nagashima, T. Yamada, H. Arakawa, N. Kasuya, A. Fujisawa, S.-I. Itoh, K. Itoh
Journal: Physics of Plasmas
Phys. Plasmas 23, 102311 (2016)
https://doi.org/10.1063/1.4965915
Published: October 2016
View article titled, Structure formation in parallel ion flow and density profiles by cross-ferroic turbulent transport in linear magnetized plasma
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Journal Articles

Observation of an edge coherent mode and poloidal flow in the electron cyclotron wave induced high βp plasma in QUEST

Santanu Banerjee, H. Zushi, N. Nishino, K. Mishra, Y. Mahira, S. Tashima, A. Ejiri, T. Yamaguchi, T. Onchi, Y. Nagashima, K. Hanada, K. Nakamura, H. Idei, M. Hasegawa, A. Fujisawa, A. Kuzmin, K. Matsuoka
Journal: Physics of Plasmas
Phys. Plasmas 23, 082507 (2016)
https://doi.org/10.1063/1.4960117
Published: August 2016
View article titled, Observation of an edge coherent mode and poloidal flow in the electron cyclotron wave induced high <em>β<sub>p</sub></em> plasma in QUEST
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Journal Articles

A model of plasma current through a hole of Rogowski probe including sheath effects

H. Furui, A. Ejiri, Y. Nagashima, Y. Takase, M. Sonehara, N. Tsujii, T. Yamaguchi, T. Shinya, H. Togashi, H. Homma, K. Nakamura, T. Takeuchi, S. Yajima, Y. Yoshida, K. Toida, W. Takahashi, H. Yamazaki
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 043503 (2016)
https://doi.org/10.1063/1.4944941
Published: April 2016
View article titled, A model of plasma current through a hole of Rogowski probe including sheath effects
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