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Researcher Name Resolver ID: 1000050396793
Scopus Author ID: 55637352600

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Employment (3)

Nagoya University: Nagoya, JP

2015-04-01 to present
Employment
Source: Self-asserted source
Atsushi Okamoto

Tohoku University: Sendai, JP

2005-07-01 to 2015-03-31
Employment
Source: Self-asserted source
Atsushi Okamoto

University of Tokyo: Tokyo, JP

2004-01-01 to 2005-06-30
Employment
Source: Self-asserted source
Atsushi Okamoto

Education and qualifications (2)

Nagoya University: Nagoya, JP

2003-04-01 to 2003-12-31
Education
Source: Self-asserted source
Atsushi Okamoto

Nagoya University: Nagoya, JP

1998-04-01 to 2003-03-31
Education
Source: Self-asserted source
Atsushi Okamoto

Works (50 of 101)

Items per page:
Page 1 of 3

Structure of intermittent variation of floating potential in a converging field following a magnetic beach ECR plasma source

Japanese Journal of Applied Physics
2023-09-01 | Journal article
DOI: 10.35848/1347-4065/acdada
Contributors: Atsushi Okamoto; Shunya Higuchi; Yuto Yamada; Koki Sato; Muneo Koike; Konan Yagasaki; Minami Sugimoto; Takaaki Fujita
Source: check_circle
Crossref

Power balance in the smallest tokamak

AIP Advances
2022-04-01 | Journal article
DOI: 10.1063/5.0085770
Contributors: Sora Kimata; Atsushi Okamoto; Takaaki Fujita; Hideki Arimoto; Kouhei Yasuda; Keitaro Kado; Keishi Tsunoda
Source: check_circle
Crossref

On electron temperature rise in divertor relevant recombining plasma along magnetic field line

Physics of Plasmas
2022-03 | Journal article
DOI: 10.1063/5.0073896
Contributors: H. Takahashi; M. N. Winarto; A. Okamoto; P. Boonyarittipong; T. Seino; K. Kusabiraki; Y. Sakata; K. Yoshimura; R. Nishimura; S. Kitajima et al.
Source: check_circle
Crossref

Stabilization of plasma vertical position of elongated tokamak using upper and lower triangular coils

Physics of Plasmas
2021-08 | Journal article
DOI: 10.1063/5.0053739
Contributors: K. Yasuda; T. Fujita; A. Okamoto; H. Arimoto; S. Kimata; K. Kado; K. Tsunoda
Source: check_circle
Crossref

Development of an ion beam measurement instrument for divertor simulation experiments in radio-frequency plasma

AIP Advances
2020-08-01 | Journal article
DOI: 10.1063/5.0009321
Contributors: Hiroyuki Takahashi; Atsushi Okamoto; Sumio Kitajima; Kenji Tobita
Source: check_circle
Crossref

Economy of tokamak neutron source for transmutation of transuranics

Plasma and Fusion Research
2019 | Journal article
DOI: 10.1585/pfr.14.1405040
EID:

2-s2.0-85063644375
Contributors: Sakai, R.; Fujita, T.; Okamoto, A.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

High-density plasma production in converging field following a magnetic beach plasma source

Plasma and Fusion Research
2019 | Journal article
DOI: 10.1585/pfr.14.2401005
EID:

2-s2.0-85063633234
Contributors: Okamoto, A.; Ochiai, R.; Satou, K.; Hachikubo, H.; Sugimoto, M.; Fujita, T.; Takahashi, H.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Derivation of bootstrap current fraction scaling formula for 0-D system code analysis

Fusion Engineering and Design
2019-12 | Journal article
DOI: 10.1016/j.fusengdes.2019.111322
Contributors: Ryosuke Sakai; Takaaki Fujita; Atsushi Okamoto
Source: check_circle
Crossref
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Preferred source (of 2)‎

Influence of the formation of a bi-Maxwellian distribution on volumetric recombining plasma spectroscopy

Physics of Plasmas
2019-03 | Journal article
DOI: 10.1063/1.5078580
Contributors: H. Takahashi; A. Okamoto; P. Boonyarittipong; T. Saikyo; K. Ogasawara; T. Seino; K. Tobita; S. Kitajima
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Validation of ion temperature measurement using an ion sensitive probe technique in finite boundary RF plasma

Physics of Plasmas
2019-02 | Journal article
DOI: 10.1063/1.5083214
Contributors: H. Takahashi; K. Ogasawara; P. Boonyarittipong; T. Saikyo; T. Seino; S. Kitajima; A. Okamoto; K. Tobita
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Application of He I line intensity ratio method to tokamak plasma in TOKASTAR-2

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.3402047
EID:

2-s2.0-85069961977
Contributors: Yokoyama, R.; Okamoto, A.; Fujita, T.; Arimoto, H.; Minoura, M.; Yasuda, K.; Yamauchi, T.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Determining the closed flux surface in a helical plasma in TOKASTAR-2 with an electrostatic probe

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.1402039
EID:

2-s2.0-85069952234
Contributors: Itou, H.; Fujita, T.; Arimoto, H.; Okamoto, A.; Muraoka, K.; Sugioka, R.; Yasuda, K.; Yokoyama, R.; Minoura, M.; Yamauchi, T.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of a high energy hydrogen beam injection system for divertor plasma simulation experiments on the DT-ALPHA device

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.3402102
EID:

2-s2.0-85069971941
Contributors: Boonyarittipong, P.; Takahashi, H.; Kitajima, S.; Okamoto, A.; Tobita, K.; Kobayashi, T.; Saikyo, T.; Ishikawa, Y.; Ogasawara, K.; Hashizume, H.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of ion sensitive probe and its application to RF plasma device DT-ALPHA

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.3401090
EID:

2-s2.0-85062099391
Contributors: Kobayashi, T.; Takahashi, H.; Kitajima, S.; Okamoto, A.; Tobita, K.; Boonyarittipong, P.; Saikyo, T.; Ishikawa, Y.; Ogasawara, K.; Hashizume, H.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Divertor plasma simulation experiment using hydrogen ionizing plasma and helium ion beam in an RF plasma source DT-ALPHA

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.3401053
EID:

2-s2.0-85069954435
Contributors: Takahashi, H.; Kobayashi, T.; Boonyarittipong, P.; Saikyo, T.; Ishikawa, Y.; Ogasawara, K.; Okamoto, A.; Tobita, K.; Kitajima, S.; Hashizume, H.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Estimation of tokamak plasma position and shape in TOKASTAR-2 using magnetic field measurement

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.3402072
EID:

2-s2.0-85069966547
Contributors: Yasuda, K.; Arimoto, H.; Okamoto, A.; Fujita, T.; Minoura, M.; Yokoyama, R.; Yamauchi, T.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Extended range of stable radial position of tokamak plasma in TOKASTAR-2

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.1402111
EID:

2-s2.0-85070022593
Contributors: Muraoka, K.; Fujita, T.; Arimoto, H.; Okamoto, A.; Itou, H.; Sugioka, R.; Minoura, M.; Yasuda, K.; Yokoyama, R.; Yamauchi, T.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Magnetic field configuration dependence of plasma production and parallel transport in a linear plasma device NUMBER

Plasma and Fusion Research
2018 | Journal article
DOI: 10.1585/PFR.13.3401044
EID:

2-s2.0-85063642592
Contributors: Hamada, D.; Okamoto, A.; Fujita, T.; Arimoto, H.; Satou, K.; Ochiai, R.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Influence of electron energy distribution on helium recombining plasma diagnostics using line emissions

Contributions to Plasma Physics
2017 | Journal article
DOI: 10.1002/ctpp.201700014
EID:

2-s2.0-85029227457
Contributors: Takahashi, H.; Okamoto, A.; Kitajima, S.; Kobayashi, T.; Boonyarittipong, P.; Miura, T.; Nakamura, D.; Kon, J.; Saikyo, T.; Tanaka, Y. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Optimization study of normal conductor tokamak for commercial neutron source

Nuclear Fusion
2017 | Journal article
DOI: 10.1088/1741-4326/aa62c2
EID:

2-s2.0-85017429676
Contributors: Fujita, T.; Sakai, R.; Okamoto, A.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Asymmetry of velocity distribution function and inhomogeneity-induced flow associated with neutral depletion structure in an ECR plasma

Physics of Plasmas
2016 | Journal article
DOI: 10.1063/1.4968217
EID:

2-s2.0-84998816195
Contributors: Terasaka, K.; Hattori, M.; Ogiwara, K.; Yoshimura, S.; Aramaki, M.; Okamoto, A.; Tanaka, M.Y.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of magnetic flux surface measurement method on TOKASTAR-2

Plasma and Fusion Research
2016 | Journal article
DOI: 10.1585/pfr.11.2402110
EID:

2-s2.0-85009795032
Contributors: Shimooka, Y.; Arimoto, H.; Fujita, T.; Okamoto, A.; Sakito, T.; Itou, H.; Muraoka, K.; Sugioka, R.; Yasuda, K.; Yokoyama, R.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Experimental study of the volumetric recombination under energetic ion flow using a radio-frequency plasma source

Physics of Plasmas
2016 | Journal article
DOI: 10.1063/1.4968239
EID:

2-s2.0-85001036896
Contributors: Takahashi, H.; Okamoto, A.; Nakamura, D.; Miura, T.; Boonyarittipong, P.; Kitajima, S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Helium volumetric recombining plasma formation for energetic ion injection in radio-frequency plasma device DT-ALPHA

Plasma and Fusion Research
2016 | Journal article
DOI: 10.1585/pfr.11.2402059
EID:

2-s2.0-85009723914
Contributors: Takahashi, H.; Okamoto, A.; Miura, T.; Nakamura, D.; Boonyarittipong, P.; Sekita, S.; Kitajima, S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Measurement of tokamak plasma with the external helical field using a high-speed camera in TOKASTAR-2

Plasma and Fusion Research
2016 | Journal article
DOI: 10.1585/pfr.11.2402074
EID:

2-s2.0-84969838820
Contributors: Sakito, T.; Arimoto, H.; Fujita, T.; Okamoto, A.; Shimooka, Y.; Itou, H.; Sugioka, R.; Muraoka, K.; Yasuda, K.; Yokoyama, R.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Particle pinch model of passing/trapped high-Z impurity with centrifugal force effect

Plasma and Fusion Research
2016 | Journal article
DOI: 10.1585/pfr.11.2403082
EID:

2-s2.0-85009794019
Contributors: Shimizu, Y.; Fujita, T.; Okamoto, A.; Arimoto, H.; Hayashi, N.; Hoshino, K.; Nakano, T.; Honda, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Energetic helium ion injection into helium recombining plasma in radio-frequency plasma source

Fusion Science and Technology
2015 | Journal article
DOI: 10.13182/FST14-910
EID:

2-s2.0-84940514972
Contributors: Takahashi, H.; Okamoto, A.; Takahashi, T.; Kitajima, S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Exploration of spontaneous vortex formation and intermittent behavior in ECR plasmas: The HYPER-I experiments

Journal of Plasma Physics
2015 | Journal article
DOI: 10.1017/S0022377814001147
EID:

2-s2.0-84925941595
Contributors: Yoshimura, S.; Terasaka, K.; Tanaka, E.; Aramaki, M.; Okamoto, A.; Nagaoka, K.; Tanaka, M.Y.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Bursting high-frequency fluctuation observed in biased plasma in TU-Heliac

Nuclear Fusion
2014 | Journal article
DOI: 10.1088/0029-5515/54/11/114013
EID:

2-s2.0-84908635179
Contributors: Koike, S.; Kitajima, S.; Okamoto, A.; Ishii, K.; Sato, Y.; Tachibana, J.; Oku, T.; Shimizu, K.; Inagaki, S.; Suzuki, Y. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of a high CMRR magnetic probe for the biased plasma in TU-Heliac

Plasma and Fusion Research
2014 | Journal article
DOI: 10.1585/pfr.9.1202053
EID:

2-s2.0-84988422551
Contributors: Koike, S.; Kitajima, S.; Okamoto, A.; Ishii, K.; Sato, Y.; Tachibana, J.; Oku, T.; Shimizu, K.; Inagaki, S.; Suzuki, Y. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of in situ energetic ion injector for magnetically confined plasmas using hydrogen storage electrode

Review of Scientific Instruments
2014 | Journal article
DOI: 10.1063/1.4825162
EID:

2-s2.0-84926611147
Contributors: Okamoto, A.; Oku, T.; Koike, S.; Sato, Y.; Ishii, K.; Kitajima, S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of ion source for simulation of edge localized mode in divertor plasma

Review of Scientific Instruments
2014 | Journal article
DOI: 10.1063/1.4826099
EID:

2-s2.0-84926635956
Contributors: Daibo, A.; Okamoto, A.; Takahashi, H.; Kumagai, T.; Takahashi, T.; Tsubota, S.; Kitajima, S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Direct measurement of ion temperature and poloidal rotation velocity with Doppler spectroscopy during Bifurcation in Tohoku University Heliac

Plasma and Fusion Research
2014 | Journal article
DOI: 10.1585/pfr.9.3402051
EID:

2-s2.0-84945294701
Contributors: Oku, T.; Kitajima, S.; Ishii, K.; Sato, Y.; Tachibana, J.; Koike, S.; Shimizu, K.; Okamoto, A.; Takahashi, H.; Takayama, M. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Effects of roughness and temperature on low-energy hydrogen positive and negative ion reflection from silicon and carbon surfaces

Review of Scientific Instruments
2014 | Journal article
DOI: 10.1063/1.4855455
EID:

2-s2.0-84893041585
Contributors: Tanaka, N.; Kato, S.; Miyamoto, T.; Nishiura, M.; Tsumori, K.; Matsumoto, Y.; Kenmotsu, T.; Okamoto, A.; Kitajima, S.; Sasao, M. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Electron energy distribution in a divertor simulating device with an RF source

Plasma and Fusion Research
2014 | Journal article
DOI: 10.1585/pfr.9.3401065
EID:

2-s2.0-84945261919
Contributors: Takahashi, H.; Okamoto, A.; Kumagai, T.; Daibo, A.; Takahashi, T.; Kitajima, S.T.S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

An experimental comparison of gross and net erosion of Mo in the DIII-D divertor

Journal of Nuclear Materials
2013 | Journal article
DOI: 10.1016/j.jnucmat.2013.01.052
EID:

2-s2.0-84885480265
Contributors: Stangeby, P.C.; Rudakov, D.L.; Wampler, W.R.; Brooks, J.N.; Brooks, N.H.; Buchenauer, D.A.; Elder, J.D.; Hassanein, A.; Leonard, A.W.; McLean, A.G. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Distribution of footprint marked by energetic alpha particle bombardment on the first wall

Journal of Nuclear Materials
2013 | Journal article
DOI: 10.1016/j.jnucmat.2013.01.191
EID:

2-s2.0-84885486028
Contributors: Okamoto, A.; Isobe, M.; Kitajima, S.; Sasao, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device

Nuclear Fusion
2013 | Journal article
DOI: 10.1088/0029-5515/53/10/104015
EID:

2-s2.0-84884841155
Contributors: Kaneko, O.; Yamada, H.; Inagaki, S.; Jakubowski, M.; Kajita, S.; Kitajima, S.; Kobayashi; Koga, K.; Morisaki, T.; Morita, S. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Transition of poloidal viscosity by electrode biasing in the Large Helical Device

Nuclear Fusion
2013 | Journal article
DOI: 10.1088/0029-5515/53/7/073014
EID:

2-s2.0-84880109739
Contributors: Kitajima, S.; Takahashi, H.; Ishii, K.; Sato, Y.; Kanno, M.; Tachibana, J.; Okamoto, A.; Sasao, M.; Inagaki, S.; Takayama, M. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Volumetric recombining plasma in helicon source divertor simulator

40th EPS Conference on Plasma Physics, EPS 2013
2013 | Conference paper
EID:

2-s2.0-84905658226
Contributors: Okamoto, A.; Takahashi, H.; Kawamura, Y.; Kumagai, T.; Daibo, A.; Takahashi, T.; Kitajima, S.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

An alpha particle measurement system using an energetic neutral helium beam in ITER (invited)

Review of Scientific Instruments
2012 | Journal article
DOI: 10.1063/1.3673493
EID:

2-s2.0-84857885781
Contributors: Sasao, M.; Kisaki, M.; Kobuchi, T.; Tsumori, K.; Tanaka, N.; Terai, K.; Okamoto, A.; Kitajima, S.; Kaneko, O.; Shinto, K. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of a He<sup>-</sup> and He<sup>0</sup> beam source for alpha particle measurement in a burning plasma

Review of Scientific Instruments
2012 | Journal article
DOI: 10.1063/1.3672113
EID:

2-s2.0-84857826954
Contributors: Tanaka, N.; Sasao, M.; Terai, K.; Okamoto, A.; Kitajima, S.; Yamaoka, H.; Wada, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Extraction of a strongly focusing He<sup>+</sup> beam from three-stage concave electrodes for alpha particle measurement system in ITER

Review of Scientific Instruments
2012 | Journal article
DOI: 10.1063/1.3673630
EID:

2-s2.0-84857804228
Contributors: Kobuchi, T.; Sasao, M.; Kisaki, M.; Tsumori, K.; Tanaka, N.; Okamoto, A.; Kitajima, S.; Kaneko, O.; Shinto, K.; Wada, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Steady-state recombining plasma in a radio-frequency plasma device for divertor-detachment study

Plasma and Fusion Research
2012 | Journal article
DOI: 10.1585/pfr.7.2401018
EID:

2-s2.0-84879086298
Contributors: Okamoto, A.; Takahashi, H.; Kawamura, Y.; Daibo, A.; Kumagai, T.; Kitajima, S.; Sasao, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Charge exchange momentum transfer due to ion beam injection in partially ionized plasmas

Plasma and Fusion Research
2011 | Journal article
DOI: 10.1585/pfr.6.1201153
EID:

2-s2.0-84860270810
Contributors: Okamoto, A.; Takahashi, H.; Kitajima, S.; Sasao, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Effects of magnetic islands on poloidal flow in TU-Heliac

Plasma and Fusion Research
2011 | Journal article
DOI: 10.1585/pfr.6.2402144
EID:

2-s2.0-84861168390
Contributors: Sato, Y.; Kitajima, S.; Suzukil, Y.; Ambo, T.; Ishii, K.; Kanno, M.; Tachibana, J.; Inagaki, S.; Yokoyama, M.; Takahashi, H. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Electrode biasing experiment in the Large Helical Device

Nuclear Fusion
2011 | Journal article
DOI: 10.1088/0029-5515/51/8/083029
EID:

2-s2.0-80051650295
Contributors: Kitajima, S.; Takahashi, H.; Ishii, K.; Sato, J.; Ambo, T.; Kanno, M.; Okamoto, A.; Sasao, M.; Inagaki, S.; Takayama, M. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Electron strippers for compact neutron generators

AIP Conference Proceedings
2011 | Conference paper
DOI: 10.1063/1.3637441
EID:

2-s2.0-80053629780
Contributors: Terai, K.; Tanaka, N.; Kisaki, M.; Tsugawa, K.; Okamoto, A.; Kitajima, S.; Sasao, M.; Takeno, T.; Antolak, A.J.; Leung, K.N. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Detection of lost alpha particle by concealed lost ion probe

Review of Scientific Instruments
2010 | Journal article
DOI: 10.1063/1.3489968
EID:

2-s2.0-78149435930
Contributors: Okamoto, A.; Isobe, M.; Kitajima, S.; Sasao, M.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier

Development of an energetic He0 beam for alpha particle diagnostics on ITER

37th EPS Conference on Plasma Physics 2010, EPS 2010
2010 | Conference paper
EID:

2-s2.0-84875682230
Contributors: Sasao, M.; Tanaka, N.; Kisaki, M.; Nagamura, T.; Terai, K.; Okamoto, A.; Kitajima, S.; Kobuchi, T.; Kaneko, O.; Tsumori, K. et al.
Source: Self-asserted source
Atsushi Okamoto via Scopus - Elsevier
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Review activity for Applied physics letters. (2)
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