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澤田 圭司  サワダ ケイジ

教員組織学術研究院(工学系)電話番号
教育組織工学部 工学基礎部門FAX番号
職名教授メールアドレス
住所〒380-8553 長野市若里4-17-1ホームページURL

更新日:2022/12/14

プロフィール

兼担研究科・学部
大学院工学系研究科
大学院総合工学系研究科
研究分野
プラズマ科学
現在の研究課題
核融合プラズマの分光学的研究
キーワード:プラズマ , 分光学 , 衝突輻射モデル , 核融合
所属学会
所属学会
日本物理学会
プラズマ・核融合学会
応用物理学会
学歴
出身大学院
1994 , 京都大学大学院工学研究科博士課程
1989 , 京都大学大学院工学研究科修士課程

出身学校・専攻等(大学院を除く)
1987 , 京都大学工学部

取得学位
博士(工学) , 京都大学
研究職歴等
研究職歴
2011- , 信州大学 教授
1997- , 信州大学 助教授
1994- , 信州大学 講師

研究職歴以外の職歴
1989-1991 , 三菱電機

研究活動業績

研究業績(著書・
発表論文等)
論文
要素モデルの統合が実現する壁からプラズマまでを含めた中性粒子輸送研究 (小特集 磁場閉じ込め核融合装置における水素原子分子輸送研究の新展開)
プラズマ・核融合学会誌 = Journal of plasma and fusion research,98(1):5-19 2022(Jan.)
Author:齋藤 誠紀;中村 浩章;澤田 圭司;河村 学思;小林 政弘


Isotope effect of rovibrational distribution of hydrogen molecules desorbed from amorphous carbon
JAPANESE JOURNAL OF APPLIED PHYSICS,61(SA):SA1005 2022
Author:Nakamura, Hiroaki; Saito, Seiki; Sawada, Takumi; Sawada, Keiji; Kawamura, Gakushi; Kobayashi, Masahiro; Hasuo, Masahiro;


Electron and Proton Energy Loss via Rovibrational Excitation of Molecular Hydrogen in Fusion Detached Plasmas
Plasma and Fusion Research,17:2403044-1-4 2022
Author:Keiji SAWADA


Reduction of pulsed particle load with dynamic pressure induced by transient recycled neutral flux
Plasma Physics and Controlled Fusion,64:105013 2022
Author:Yuki Hayashi, Hirohiko Tanaka, Noriyasu Ohno, Shin Kajita, Thomas Morgan, Hennie van der Meiden, John Scholten, Jordy Vernimmen, Hiroki Natsume, Keiji Sawada, Shota Masuda


イオン源プラズマの原子・分子過程 (小特集 イオン源の数値シミュレーション技術の進展と応用)
プラズマ・核融合学会誌 = Journal of plasma and fusion research,97(10):572-576 2021(Oct.)
Author:柴田 崇統;澤田 圭司


Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy
Journal of Quantitative Spectroscopy & Radiative Transfer,267:107592 2021
Author:Hiroki Ishihara, Arseniy Kuzmin, Masahiro Kobayashi, Taiichi Shikama, Keiji Sawada, Seiki Saito, Hiroaki Nakamura, Keisuke Fujii, Masahiro Hasuo, the LHD Experiment Group.


Neutral transport code for rovibrational population calculation of molecular hydrogen in large helical device plasmas
Contrib. Plasm. Phys.,:e201900153 2020
Author:K. Sawada, H. Nakamura, S. Saito, G. Kawamura, M. Kobayashi, K. Haga, R. Migita, T. Sawada, M. Hasuo


Molecular Dynamics Simulation Model of Hydrogen Recycling on Carbon Divertor for Neutral Transport Analysis in LHD
Contrib. Plasm. Phys.,:e201900152 2020
Author:S. Saito, H. Nakamura, K. Sawada, G. Kawamura, M. Kobayashi, M. Hasuo


Detached helium plasma simulation by a one-dimensional fluid code with detailed collisional-radiative model
PHYSICS OF PLASMAS,27(10):102505 2020
Author:Tanaka, H.; Saeki, I.; Ohno, N.; Kajita, S.; Ido, T.; Natsume, H.; Hatayama, A.; Hoshino, K.; Sawada, K.; Goto, M.


Development of a Molecular Dynamics Method with Heat Transfer into Bulk for Ion Injection into Materials
PLASMA AND FUSION RESEARCH,15:2403073 2020
Author:Saito, Seiki; Nakamura, Hiroaki; Sawada, Keiji; Kobayashi, Masahiro; Gakushi, Kawamura; Masahiro, Hasuo


Molecular dynamics simulation for hydrogen recycling on tungsten divertor for neutral transport analysis
JAPANESE JOURNAL OF APPLIED PHYSICS,(60):SAAB08 2020
Author:Saito, Seiki; Nakamura, Hiroaki; Sawada, Keiji; Kobayashi, Masahiro; Kawamura, Gakushi; Sawada, Takumi; Masahiro, Hasuo


Spectroscopic Measurement of Hydrogen Atom Density in a Plasma Produced with 28 GHz ECH in QUEST
ATOMS,8:44 2020
Author:Mori, Satoru; Shikama, Taiichi; Hanada, Kazuaki; Yoneda, Nao; Kuzmin, Arseniy; Hasuo, Masahiro; Idei, Hiroshi; Onchi, Takumi; Ejiri, Akira; Osawa, Yuki; Peng, Yi; Matsuzaki, Kyohei; Kado, Shinichiro; Sawada, Keiji; Ido, Takeshi; Nakamura, Kazuo; Ikezoe, Ryuya; Nagashima, Yoshihiko; Hasegawa, Makoto; Kuroda, Kengo; Higashijima, Aki; Nagata, Takahiro; Shimabukuro, Shun


Impact of additional plasma heating on detached plasma formation in divertor simulation experiments using the GAMMA 10/PDX tandem mirror
Nuclear Materials and Energy,18:216-221 2019
Author:Y. Nakashima, M.S. Islam, T. Iijima, M. Sakamoto, N. Ezumi, M. Yoshikawa, N. Asakura, M. Fukumoto, A. Hatayama, M. Hirata, M. Ichimura, R. Ikezoe, T. Imai, M.M. Islam, T. Kariya, J. Kohagura, S. Masuzaki, R. Minami, T. Nakano, K. Nojiri, T. Numakura, K. Sawada, M. Shoji, A. Terakado, S. Togo, S. Yamashita, T. Yoshimoto


Reaction processes of molecular activated recombination leading to detachment of divertor simulation plasma in GAMMA 10/PDX
Nuclear Materials and Energy,20:100679 2019
Author:A. Terakado, M. Sakamoto, N. Ezumi, K. Nojiri, T. Mikami, Y. Kinoshita, S. Togo, T. Iijima, K. Sawada, S. Kado, Y. Nakashima


Hydrogen recycling study with a high temperature target in the divertor simulation experiment in GAMMA 10 / PDX
Plasma and Fusion Research,13:3402096 2018
Author:Akihiro TERAKADO, Mizuki SAKAMOTO, Naomichi EZUMI, Kunpei NOJIRI, Tomohiro MIKAMI, Satoshi TOGO, Takaaki IIJIMA, Takayuki YOKODO, Keiji SAWADA


Molecular activated recombination in divertor simulation plasma on GAMMA 10/PDX
Nuclear Materials and Energy,12:1004-1009 2017
Author:M. Sakamoto, A. Terakado, K. Nojiri, N. Ezumi, Y. Nakashima, K. Sawada, K. Ichimura, M. Fukumoto, K. Oki, K. Shimizu, N. Ohno, S. Masuzaki, S. Togo, J. Kohagura, M. Yoshikawa


Rovibrationally Resolved Time-Dependent Collisional-Radiative Model of Molecular Hydrogen and Its Application to a Fusion Detached Plasma
Atoms,4(4):29 2016
Author:Keiji Sawada and Motoshi Goto


Photon Trapping Effects in DEMO Divertor Plasma
Contrib. Plasma Phys,56:657–662 2016
Author:K. Hoshino, K. Sawada, R. Idei, S. Tokunaga, N. Asakura, K. Shimizu, N. Ohno


Particle source and edge confinement study based on spectroscopic diagnosis in the LHD
Plasma Physics and Controlled Fusion,58:84001-84005 2016
Author:M. Goto, K. Sawada, T. Oishi, S. Morita


Energy Density Dependence of Hydrogen Combustion Efficiency in Atmospheric Pressure Microwave Plasma
Fusion Science and Technology,67:650-653 2015
Author:T. Yoshida, N. Ezumi, K. Sawada, Y. Tanaka, M. Tanaka, K. Nishimura


Hydrogen atomic and molecular emission locations and intensities in the LHD edge plasma determined from simultaneously observed polarization spectra
Plasma and Fusion Research,10:3402041 2015
Author:K. Fujii, K. Sawada, M Goto, S. Morita, M. Hasuo


Influence of Plasma-Neutral Collisions on Probe Measurements in Atmospheric Pressure Plasmas
Contributions to Plasma Physics,54:304–307 2014
Author:N. Ezumi, K. Takahashi, T. Yoshida, Y. Hatada, Y. Hayashi, C. Uchiyama, S. Iio, K. Sawada, N. Ohno, Zh. Kiss'ovski


Determination of electron temperature and density at plasma edge in the Large Helical Device with opacity-incorporated helium collisional-radiative model
Journal of Quantitative Spectroscopy and Radiative Transfer,137:23-28 2014
Author:M. Goto, K. Sawada


Numerical study of the H0 atomic density and the Balmer line intensity profiles in a hydrogen negative ion source with the effect of non-equilibrium electron energy distribution function
Plasma and Fusion Research,9:1401011 2014
Author:Takanori Shibata, Mieko Kashiwagi, Akiyoshi Hatayama, Keiji Sawada, Takashi Inoue, Masaya Hanada


Coordinated Research Projects (CRP) (小特集 IAEAにおける原子分子データ Coordinated Research Projects (CRP))
プラズマ・核融合学会誌,89(9):583-599 2013(Sep.)
Author:高木 秀一;小池 文博;中村 信行;坂上 裕之;澤田 圭司;後藤 基志;加藤 太治;芦川 直子;西村 好史;齋藤 純;横川 大輔;周 建斌;WITEK Henryk A.;IRLE Stephan


Deuterium atomic density estimation in recombining plasmas using self‐absorption spectroscopy
IEEJ Transactions on Electrical and Electronic Engineering,8:1-6 2013
Author:S. Kajita, T. Nishiwaki, N. Ohno, Noriyasu, K. Sawada, M. Takagi


Influence of the Probe Electrode on Probe Measurements for Atmospheric Pressure Microwave Plasma Torch
Contrib. Plasma Phys.,53:81-85 2013
Author:N. Ezumi, N. Kodama, K. Akahane, S. Shiozawa, K. Sawada, N. Ohno


Optical Emission and Mass Spectra Observations during Hydrogen Combustion in Atmospheric Pressure Microwave Plasma
Plasma and Fusion Research,7:2401075 2012
Author:N. Ezumi, K. Akahane, K. Sawada, Y. Tanaka, M. Tanaka, T. Uda and K. Nishimura


Evaluation of hydrogen atom density in the plasma core regionbased on the Balmer-αline profile
Nucl. Fusion,51:23005 2011
Author:M. Goto, K. Sawada, K. Fujii, M. Hasuo, S. Morita


Spectroscopic diagnostic of helium-hydrogen rf plasma under the influence of radiation trapping
Plasma and Fusion Res.,6:1401010 2011
Author:K. Sawada, M. Goto, N. Ezumi


A Collisional-Radiative Model for Hydrogen Atom Including Velocity Changing Collisions
Plasma and Fusion Research,6:2401125 2011
Author:Keisuke FUJII, Taiichi SHIKAMA, Keiji SAWADA, Motoshi GOTO, Shigeru MORITA and Masahiro HASUO


Collisional-radiative model for spectroscopic diagnostic of optically thick helium plasma
Plasma and Fusion Res.,5:001 2010
Author:K. Sawada, Y. Yamada, T. Miyachika, N.Ezumi, A. Iwamae, M. Goto


Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its applicationto large helical device periphery plasmas
Rev. Sci. Instrum.,81(3):033106 2010
Author:K. Fujii, K. Mizushiri, T. Nishioka, T. Shikama, A. Iwamae, M. Goto, S. Morita,S Kado, K. Sawada, M. Hasuo


FDTD simulation on plasmon in gold nanorod excited by scanning near field optical microscopy
Plasma and Fusion Res.,5:S2110 2010
Author:K. Sawada, H. Nakamura, T. Maruoka, Y. Tamura, K. Imura, T. Saiki, H. Okamoto


Magnetic axial dependency of Hα emission location in peripheral plasmas of Large Helical Device as determined by plasma polarization spectroscopy
Plasma and Fusion Res.,5:032 2010
Author:A. Iwamae, A. Sakaue, N. Neshi, J. Yanagibayashi, M. Hasuo, D. Nakamura, K. Sawada, M. Goto, S. Morita


Atomic and molecular processes with lithium in peripheral plasmas
Fusion Engineering and Design,(85):854–857 2010
Author:I. Murakami, D. Kato, Y. Hirooka, K. Sawada


Simulation of electric quadrupole and magnetic dipole transition efficiencies in optical near fields generated by a subwavelength slit array
J. Phys. Soc. Jpn.,78:024301 2009
Author:K. Deguchi, M. Okuda, A. Iwamae, H. Nakamura, K. Sawada and M. Hasuo


Spatial structure of volume recombination in JT-60U detached divertor plasmas
Plasma and Fusion Res.,4:025 2009
Author:K. Fujimoto, T. Nakano, H. Kubo, K. Sawada, T. Takizuka, H. Kawashima, K. Shimizu, N. Asakura


Alignment creation and deviation from statistical population distribution in hydrogenn = 3 levels observed on MSE spectra of LHD plasma
Plasma Phys. Control. Fusion,51:115004 2009
Author:A. Iwamae, A. Sakaue, M. Atake, K. Sawada, M. Goto, S. Morita


Surface temperature effects on hydrogen and impurity release from the limiter studied by means of visible and near infrared spectroscopic measurement in TRIAM-1M
J. Nucl. Mater.,363-365:938-943 2007
Author:R. Bhattacharyay, H. Zushi, K. Nakashima, T. Shikama, M. Sakamoto, M. Ogawa, K. Nakamura, N. Yoshida, S. Kado, K. Sawada, Y. Hirooka, K. Hanada, K.N. Sato, H. Idei, K. Sasaki, H. Xu, M. Hasegawa, K. Uehara, A. Tsushima, N. Kimura, Y. Nozaki, S. Kawasaki, H. Nakashima, A. Higashijima


Detailed atomic, molecular and radiation kinetics in current 2D and 3D edge plasmafluid codes
,363-365:649-657 2007
Author:D. Reiter, V. Kotov, P. Börner, K. Sawada, R.K. Janev, B. Kuppers


Contribution of hydrogen molecular assisted recombination processes to population of hydrogen atom in divertor simulator MAP-II
J. Nucl. Mater.,363-365:395-399 2007
Author:A. Okamoto, S. Kado, K. Sawada, Y. Kuwahara, Y. Iida, S. Tanaka


Modification of tomography technique for two-dimensional spectroscopic measurement in JT-60U divertor plasmas
Plasma and Fusion Res.,2:S1121 2007
Author:K. Fujimoto, T. Nakano, H. Kubo, K. Sawada, T. Takizuka, K. Shimizu, H. Kawashima,N. Asakura


Simulation of optical near field of a sub-wavelength gold slit array and its electric quadrupole interactionwith 1s excitons in Cu2O
Phys. Stat. Sol.,c 3:3547-3552 2006
Author:M. Okuda, K. Deguchi, A. Iwamae, N. Nakamura, K. Sawada, M. Hasuo


Iterative numerical method for inclusion of radiation trapping into collisional-radiative model
J. Plasma Physics,72:1025-1029 2006
Author:K. Sawada


FDTD modeling of polarization near-field scanning optical microscope
J. Plasma Physics,72:1019-1023 2006
Author:K. Sawada, M. Sakai, Y. Kohashi, T. Saiki and H. Nakamura


Iterative numerical method for the inclusion of radiation trapping into a collisional-radiative model
JOURNAL OF PLASMA PHYSICS,72:1025-1029 2006
Author:Sawada, K


FDTD modeling of a polarization near-field scanning optical microscope
JOURNAL OF PLASMA PHYSICS,72:1019-1023 2006
Author:Sawada, K; Sakai, M; Kohashi, Y; Saiki, T; Nakamura, H


Spectroscopic study of hydrogen particlebehavior in attached and detached divertor plasmas of JT-60U
J. Nucl. Mater.,337-339:161-165 2005
Author:H. Kubo, H. Takenaga, K. Sawada, T. Nakano, S.Kobayashi, S.Higashijima, N. Asakura, K. Shimizu


Determinationof the hydrogen and helium ion densities in the initial and final stages of a plasma in the Large Helical Device by optical spectroscopy
PHYSICS OF PLASMAS,10(5):1402-1410 2003
Author:Goto, M; Morita, S; Sawada, K; Fujimoto, T; Yamamoto, S; Miyazawa, J; Yamada, H; Toi, K


Emission radiation of hydrogen and helium atoms and ions a plasma
CONTRIBUTIONS TO PLASMA PHYSICS,42(2-4):212-217 2002
Author:Goto, M; Sawada, K; Fujimoto, T


Relations between the ionization or recombination flux and the emission radiation for hydrogen and helium in plasma
PHYSICS OF PLASMAS,9(10):4316-4324 2002
Author:Goto, M; Sawada, K; Fujimoto, T


Effect of initial vibrational excitation of molecular hydrogen on molecular assisted recombination in divertor plasmas
CONTRIBUTIONS TO PLASMA PHYSICS,42(6-7):603-607 2002
Author:Sawada, K; Fujimoto, T


FDTD analysis of a near-field optical fiber probe with a double tapered structure
IEICE TRANSACTIONS ON ELECTRONICS,E85C(12):2055-2058 2002
Author:Sawada, K; Nakamura, H; Kambe, H; Saiki, T


Spatial resolution of near-field scanning optical microscopy with sub-wavelength aperture
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT,(138):173-174 2000
Author:Nakamura, H; Sawada, K; Kambe, H; Saiki, T; Sato, T


Ultraviolet photoemission studies of valence bands in lead halides
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,67(6):2140-2141 1998
Author:Itoh, M; Shiokawa, T; Sawada, K; Kamada, M


Phonon broadening of line widths of Auger-free luminescence in wide-gap ionic crystals
JOURNAL OF LUMINESCENCE,72-4:762-764 1997
Author:Itoh, M; Sawada, K; Hara, H; Ohno, N; Kamada, M


Effective ionization and dissociation rate coefficients of molecular hydrogen in plasma (vol 78, pg 2913, 1995)
JOURNAL OF APPLIED PHYSICS,80(1):606-606 1996
Author:Sawada, K; Fujimoto, T


EFFECTIVE IONIZATION AND DISSOCIATION RATE COEFFICIENTS OF MOLECULAR-HYDROGEN IN PLASMA
JOURNAL OF APPLIED PHYSICS,78(5):2913-2924 1995
Author:SAWADA, K; FUJIMOTO, T


講演・口頭発表等
Collisional-radiative model of molecular hydrogen
IAEA CRP on atomic and molecular data for state-resolved modelling of hydrogen and helium and their isotopes in fusion plasma 2016
Presenter:Keiji Sawada


Revision of Collisional-Radiative Models and Neutral-Transport Code for Hydrogen and Helium Species
IAEA first Research Coordination Meeting on Atomic and Molecular Data for State-Resolved Modelling of Hydrogen and Helium and Their Isotopes in Fusion Plasma 2011
Presenter:Keiji Sawada

教育活動実績

授業等
2022 , 解析力学
2022 , 電磁気学
2022 , 統計熱力学