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Journal Articles

Measurement of x-ray bremsstrahlung radiation from high energy electrons by stochastic acceleration in Heliotron J

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R. Yamato, S. Kobayashi, T. Fujita, K. Nagaoka, K. Nagasaki, S. Inagaki, T. Kawate, H. Ohgaki, T. Kii, H. Zen, S. Kado, T. Minami, H. Okada, S. Ohshima, S. Konoshima, T. Mizuuchi, Y. Mototake
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 96, 033512 (2025)
https://doi.org/10.1063/5.0231450
Published: March 2025
View articletitled, Measurement of x-ray bremsstrahlung radiation from high energy electrons by stochastic acceleration in Heliotron J
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Journal Articles

The observation of avalanche-like transport during confinement power degradation in Heliotron J

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F. Kin, S. Inagaki, K. Nagasaki, M. Luo, T. Minami, S. Ohshima, S. Kobayashi, S. Kado, S. Konoshima, T. Mizuuchi, N. Marushchenko
Journal: Physics of Plasmas
Phys. Plasmas 30, 112505 (2023)
https://doi.org/10.1063/5.0167315
Published: November 2023
View articletitled, The observation of avalanche-like transport during confinement power degradation in Heliotron J
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Journal Articles

Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J

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P. Zhang, S. Ohshima, H. Zhao, S. Kobayashi, S. Kado, T. Minami, F. Kin, A. Miyashita, A. Iwata, Y. Kondo, D. Qiu, C. Wang, M. Luo, S. Konoshima, S. Inagaki, H. Okada, T. Mizuuchi, K. Nagasaki
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 94, 093501 (2023)
https://doi.org/10.1063/5.0162649
Published: September 2023
View articletitled, Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J
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Journal Articles

In situ high temperature powder x-ray diffraction technique using a sapphire single-crystal flat cell

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S. Kobayashi, S. Kawaguchi, H. Yamada
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 94, 083103 (2023)
https://doi.org/10.1063/5.0150091
Published: August 2023
View articletitled, In situ high temperature powder x-ray diffraction technique using a sapphire single-crystal flat cell
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Includes: Supplementary data
Journal Articles

Measurement of Pa α line from pellet ablation cloud in Heliotron J

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A. Iwata, S. Kado, M. Murakumo, T. Shikama, G. Motojima, A. Mori, C. Feng, H. Okada, T. Minami, S. Ohshima, S. Kobayashi, A. Ishizawa, Y. Nakamura, S. Konoshima, T. Mizuuchi, K. Nagasaki
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 113537 (2022)
https://doi.org/10.1063/5.0101885
Published: November 2022
View articletitled, Measurement of Pa α line from pellet ablation cloud in Heliotron J
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Journal Articles

Development and initial results of 320 GHz interferometer system in Heliotron J

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P. Zhang, S. Ohshima, H. Zhao, C. Deng, S. Kobayashi, S. Kado, T. Minami, R. Matoike, A. Miyashita, A. Iwata, Y. Kondo, D. Qiu, C. Wang, M. Luo, S. Konoshima, S. Inagaki, H. Okada, T. Mizuuchi, K. Nagasaki
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 113519 (2022)
https://doi.org/10.1063/5.0101808
Published: November 2022
View articletitled, Development and initial results of 320 GHz interferometer system in Heliotron J
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Journal Articles

Development of beam emission spectroscopy in the helically symmetric experiment stellarator

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S. Kobayashi, S. T. A. Kumar, F. S. B. Anderson, C. B. Deng, K. M. Likin, J. N. Talmadge, S. Ohshima, D. T. Anderson
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 92, 063503 (2021)
https://doi.org/10.1063/5.0043596
Published: June 2021
View articletitled, Development of beam emission spectroscopy in the helically symmetric experiment stellarator
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Journal Articles

Development of a multi-channel 320 GHz interferometer for high density plasma measurement in Heliotron J

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S. Ohshima, P. Zhang, H. Kume, C. Deng, A. Miyashita, S. Kobayashi, H. Okada, T. Minami, S. Kado, P. Adulsiriswad, D. Qiu, M. Luo, R. Matoike, T. Suzuki, S. Konoshima, T. Mizuuchi, K. Nagasaki
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 92, 053519 (2021)
https://doi.org/10.1063/5.0043581
Published: May 2021
View articletitled, Development of a multi-channel 320 GHz interferometer for high density plasma measurement in Heliotron J
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Journal Articles

Q-band high-performance notch filters at 56 and 77 GHz notches for versatile fusion plasma diagnostics

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M. Nishiura, T. Shimizu, S. Kobayashi, T. Tokuzawa, K. Ichinose, S. Kubo
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 92, 034711 (2021)
https://doi.org/10.1063/5.0041243
Published: March 2021
View articletitled, Q-band high-performance notch filters at 56 and 77 GHz notches for versatile fusion plasma diagnostics
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Journal Articles

Application of portable near-infrared spectrometer to Heliotron J plasma diagnostics

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S. Kado, A. Iwata, T. Kanazawa, H. Okada, S. Yamamoto, G. Motojima, H. Okazaki, T. Minami, S. Kobayashi, K. Nagasaki, S. Ohshima, Y. Nakamura, A. Ishizawa, S. Konoshima, T. Mizuuchi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 10D129 (2018)
https://doi.org/10.1063/1.5039320
Published: October 2018
View articletitled, Application of portable near-infrared spectrometer to Heliotron J plasma diagnostics
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Journal Articles

Response of a core coherent density oscillation on electron cyclotron resonance heating in Heliotron J plasma

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T. Kobayashi, S. Kobayashi, X. X. Lu, N. Kenmochi, K. Ida, S. Ohshima, S. Yamamoto, S. Kado, D. Kokubu, K. Nagasaki, H. Okada, T. Minami, Y. Otani, T. Mizuuchi
Journal: Physics of Plasmas
Phys. Plasmas 25, 012513 (2018)
https://doi.org/10.1063/1.5007903
Published: January 2018
View articletitled, Response of a core coherent density oscillation on electron cyclotron resonance heating in Heliotron J plasma
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Journal Articles

Electron paramagnetic resonance study of MgO thin-film grown on silicon

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K. Hayashi, Y. Matsumura, S. Kobayashi, H. Morishita, H. Koike, S. Miwa, N. Mizuochi, Y. Suzuki
Journal: Journal of Applied Physics
J. Appl. Phys. 121, 213901 (2017)
https://doi.org/10.1063/1.4983752
Published: June 2017
View articletitled, Electron paramagnetic resonance study of MgO thin-film grown on silicon
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Journal Articles

Injection barrel with a tapered structure for a low speed and small size cryogenic hydrogen pellet in medium-sized plasma fusion devices

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G. Motojima, R. Sakamoto, H. Okada, K. Nagasaki, H. Yamada, Y. Nakamura, S. Kado, S. Kobayashi, S. Konoshima, T. Minami, S. Ohshima, S. Yamamoto, T. Mizuuchi, T. Mutoh
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 103503 (2016)
https://doi.org/10.1063/1.4964476
Published: October 2016
View articletitled, Injection barrel with a tapered structure for a low speed and small size cryogenic hydrogen pellet in medium-sized plasma fusion devices
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Journal Articles

Characteristics of SMBI fueling with laval nozzle in GAMMA 10 based on experimental and simulation results

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M. M. Islam, Y. Nakashima, S. Kobayashi, N. Nishino, K. Hosoi, K. Ichimura, M. S. Islam, K. Fukui, K. Shimizu, M. Ohuchi, M. Arai, T. Yokodo, G. Lee, M. Yoshikawa, J. Kohagura, M. Hirata, R. Ikezoe, M. Ichimura, M. Sakamoto, T. Imai
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1771, 030018 (2016)
https://doi.org/10.1063/1.4964174
Published: October 2016
View articletitled, Characteristics of SMBI fueling with laval nozzle in GAMMA 10 based on experimental and simulation results
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Journal Articles

Faraday-cup-type lost fast ion detector on Heliotron J

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S. Yamamoto, K. Ogawa, M. Isobe, D. S. Darrow, S. Kobayashi, K. Nagasaki, H. Okada, T. Minami, S. Kado, S. Ohshima, G. M. Weir, Y. Nakamura, S. Konoshima, N. Kemmochi, Y. Ohtani, T. Mizuuchi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 11D818 (2016)
https://doi.org/10.1063/1.4960310
Published: August 2016
View articletitled, Faraday-cup-type lost fast ion detector on Heliotron J
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Journal Articles

Development of beam emission spectroscopy for turbulence transport study in Heliotron J

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S. Kobayashi, S. Ohshima, H. Matsuda, X. X. Lu, D. Kokubu, K. Ida, T. Kobayashi, M. Yoshinuma, S. Kado, T. Oishi, K. Nagasaki, H. Okada, T. Minami, S. Yamamoto, Y. Nakamura, A. Ishizawa, N. Kenmochi, Y. Otani, S. Konoshima, T. Mizuuchi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 11E519 (2016)
https://doi.org/10.1063/1.4959949
Published: August 2016
View articletitled, Development of beam emission spectroscopy for turbulence transport study in Heliotron J
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Journal Articles

Direct observation of B-site ordering in LSAT: (La0.3Sr0.7)(Al0.65Ta0.35)O3 single crystal

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S. Okada, S. Kobayashi, K. Ohashi, N. Nishikawa, T. Tokunaga, K. Sasaki, T. Yamamoto
Journal: Applied Physics Letters
Appl. Phys. Lett. 108, 251905 (2016)
https://doi.org/10.1063/1.4954945
Published: June 2016
View articletitled, Direct observation of B-site ordering in LSAT: (La0.3Sr0.7)(Al0.65Ta0.35)O3 single crystal
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Journal Articles

Neoclassical parallel flow calculation in the presence of external parallel momentum sources in Heliotron J

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K. Nishioka, Y. Nakamura, S. Nishimura, H. Y. Lee, S. Kobayashi, T. Mizuuchi, K. Nagasaki, H. Okada, T. Minami, S. Kado, S. Yamamoto, S. Ohshima, S. Konoshima, F. Sano
Journal: Physics of Plasmas
Phys. Plasmas 23, 032511 (2016)
https://doi.org/10.1063/1.4944913
Published: March 2016
View articletitled, Neoclassical parallel flow calculation in the presence of external parallel momentum sources in Heliotron J
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Journal Articles

Design of polarizers for a mega-watt long-pulse millimeter-wave transmission line on the large helical device

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T. Ii, S. Kubo, T. Shimozuma, S. Kobayashi, K. Okada, Y. Yoshimura, H. Igami, H. Takahashi, S. Ito, Y. Mizuno, K. Okada, R. Makino, K. Kobayashi, Y. Goto, T. Mutoh
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 86, 023502 (2015)
https://doi.org/10.1063/1.4907355
Published: February 2015
View articletitled, Design of polarizers for a mega-watt long-pulse millimeter-wave transmission line on the large helical device
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Journal Articles

Electron cyclotron beam measurement system in the Large Helical Device

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S. Kamio, H. Takahashi, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Igami, S. Ito, S. Kobayashi, Y. Mizuno, K. Okada, M. Osakabe, T. Mutoh
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 85, 11E822 (2014)
https://doi.org/10.1063/1.4893432
Published: August 2014
View articletitled, Electron cyclotron beam measurement system in the Large Helical Device
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