研究成果 Publications

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2017

[1] Data-driven sensitivity inference for Thomson scattering electron density measurement systems
Keisuke Fujii, Ichihiro Yamada, and Masahiro Hasuo
Review of Scientific Instruments 88, 013508 (2017)


[2] Experimental evaluation of fractional abundance data for W23+–W28+
Keisuke Fujii, Daiji Kato, Nobuyuki Nakamura, Motoshi Goto, Shigeru Morita and Masahiro Hasuo
J. Phys. B: At. Mol. Opt. Phys. 50, 055004 (2017)


[3] Measurement of linear polarization in the HeI 21P-31D emission line in an electron cyclotron resonance discharge plasma
T. Higashi, T. Shikama, T. Teramoto, A. Ueda and M. Hasuo,
Jpnese Journal of Appllied Physiscs, 56, 096101 (2017).


[4] Spectroscopic measurement of the degree of ionization in a helium electron cyclotron resonance discharge in a simple cusp field
A. Ueda, T. Shikama, T. Teramoto, T. Higashi, Y. Iida and M. Hasuo,
Appllied Physiscs Letters, 111, 074101 (2017).


[5] Laser absorption spectroscopy for measurement of He metastable atoms of a microhollow cathode plasma
K. Ueno, K. Kamebuchi, J. Kakutani,L. Matsuoka, S. Namba, K. Fujii, T. Shikama, and M. Hasuo,
Jpanese Journal of Appllied Physics, accepted.


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2016

[1] Inversion Methods of the Balmer-alpha Line Profile for Hydrogen Atom Density Evaluation in High-Temperature Plasmas
Keisuke Fujii, Motoshi Goto, Shigeru Morita, Masahiro Hasuo
FUSION SCIENCE AND TECHNOLOGY 69,514(2016)


[2] Measurement of the helium 23S metastable atom density by observation of the change in the 23S-23P emission line shape due to radiation reabsorption
T. Shikama, S. Ogane, Y. Ida and M. Hasuo,
Journal of Physics D: Applied Physics, 49, 025206 (2016).


[3] Development of a polarization-modulation spectroscopy system for the temporally resolved measurement of linear polarization in plasma emission
K. Yasui, T. Shikama, T. Higashi and M. Hasuo,
Review of Scientific Instruments, 87, 103507 (2016).


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2015

[1] Visible emission spectroscopy of highly charged tungsten ions in LHD: I. Survey of new visible emission lines
M Shinohara, K Fujii, D Kato, N Nakamura, M Goto, S Morita, M Hasuo and LHD Experiment Group
PHYSICA SCRIPTA 90, 125402(2015)


[2] Visible emission spectroscopy of highly charged tungsten ions in LHD: II. Evaluation of tungsten ion temperature
K. Fujii, Y. Takahashi, Y. Nakai, D. Kato, M. Goto, S. Morita, M. Hasuo
PHYSICA SCRIPTA 90, 125403(2015)


[3] Study of neutral hydrogen transport in LHD core plasmas based on high dynamic-range Balmer-alpha spectroscopy
K. Fujii, M. Goto, S. Morita
NUCLEAR FUSION 55, 63029(2015)


[4] Hydrogen Atomic and Molecular Emission Locations and Intensities in the LHD Edge Plasma Determined from Simultaneously Observed Polarization Spectra
K. Fujii, K. Sawada, M. Goto, S. Morita, M. Hasuo
Plasma and Fusion Research 10, 3402041(2015)


[5] Spatially Resolved Absorption Spectroscopy on a Microhollow Cathode Helium Plasma Using a Vertical-Cavity Surface-Emitting Laser
Torii, Kakeru; Yamawaki, Shota; Katayama, Koichi; Namba, Shinichi; Fujii, Keisuke; Shikama, Taiichi & Hasuo, Masahiro
Plasma and Fusion Research 10, 3406063(2015)


[6] Development of a tunable Fabry-Perot etalon-based near-infrared interference spectrometer for measurement of the HeI 23S-23P spectral line shape in magnetically confined torus plasmas
S. Ogane, T. Shikama, H. Zushi and M. Hasuo, Review of Scientific Instruments, 86, 103507 (2015).

[7] Overview of transport and MHD stability study: focusing on the impact of magnetic field topology in the Large Helical Device
K.Ida, et.al., (M. Hasuo, 20th author) Nuclear Fusion, 55, 104018 (2015).


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2014

[1] Development of a high dynamic range spectroscopic system for observation of neutral hydrogen atom density distribution in Large Helical Device core plasma
K. Fujii, S. Atsumi, S. Watanabe, T. Shikama, M. Goto, S. Morita, M. Hasuo
REVIEW OF SCIENTIFIC INSTRUMENTS 85, 023502 (2014)


[2] Detection of electron energy distribution function anisotropy in a magnetized electron cyclotron resonance plasma by using a directional Langmuir probe
Shikama, T; Kitaoka, H & Hasuo, M
Physics of Plasmas (1994-present) 21, 73510(2014)


[3] Measurements of helium 23S metastable atom density in low-pressure glow discharge plasmas by self-absorption spectroscopy of HeI 23S--23P transition
Shikama, Taiichi; Ogane, Shuhei; Ishii, Hidekazu; Iida, Yohei & Hasuo, Masahiro
Japanese Journal of Applied Physics 53, 86101(2014)

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2013

[1] Development of a compact thermal lithium atom beam source for measurements of electron velocity distribution function anisotropy in electron cyclotron resonance plasmas
T. Nishioka, T. Shikama, S. Nagamizo, K. Fujii, H. Zushi, M. Uchida, A. Iwamae, H. Tanaka, T. Maekawa, M. Hasuo
Review of Scientific Instruments 84, 073509 (2013)


[2] Hydrogen transport diagnostics by atomic and molecular emission line profiles simultaneously measured for large helical device
K. Fujii, T. Shikama, M. Goto, S. Morita and M. Hasuo,
Phys. Plasmas 20, 012514 (2013).
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2012

[1] Rapid and High-Sensitivity Measurements of O2 A-Band Absorption Spectra with Combination of a Current-Modulated Distributed Feedback Diode Laser and Balance Detection
K. Katayama, T.Shikama and M.Hasuo, Jpn. J. Appl. Phys., 51, 022603 (5pp) (2012).


[2] Observation of the A2Δ隲 X2Π transition spectra of CD molecules under a magnetic field relevant to fusion plasmas T.Shikama, N. Naka and M.Hasuo, J. Quant. Spectrosc. Ratiat. Transfer, 113, 294-298 (2012).

[3] Perturber Dependence of Disalignment Cross Sections of the Argon 2p2 Atoms Measured at Temperatures between 77 and 295 K
H. Matsukuma, H. Tanaka, Y. Takaie, T. Shikama, C. Bahrim and M. Hasuo, J. Phys. Soc. Jpn., 81, 114302 (7pp) (2012).


[4] Wideband High-Resolution Spectroscopy of Al-pellet Ablation Plasmas in Large Helical Device
M. Hasuo, K. Fujii, T. Shikama, S. Morita, M. Goto and H. Tanaka, J. Phys.: Conf. Ser., 397 012016 (6pp) (2012).


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2011

[1] A Simultaneous Measurement of Polarization-resolved Spectra of Neutral Helium 23P-33D, 21P-31D and 23P-33S Emissions from the Periphery of an LHD Plasma
K. Mizushiri, K. Fujii, T. Shikama, A. Iwamae, M. Goto, S. Morita and M. Hasuo, Plasma Phys. Control. Fusion, 53, 105012.
[2] A Collisional-Radiative Model for Hydrogen including Velocity Changing Collisions between Atoms and Protons
K. Fujii, T. Shikama, K. Sawada, M. Goto, S. Morita and M. Hasuo, J. of Plasma and Fusion Res., 6, 2401125.
[3] Fe14+ and Fe15+ spatial distributions in LHD plasma observed with a multiple-viewing-chord extreme-ultraviolet spectrometer
J. Yanagibayashi, M. Goto, C.F. Dong, S. Morita and M. Hasuo, J. of Plasma and Fusion Res., 6, 2402060.
[4] Plasma polarization spectroscopy of atomic and molecular emissions from magnetically confined plasmas
T. Shikama, K. Fujii, S. Kado, H. Zushi, M. Sakamoto, A. Iwamae, M. Goto, S. Morita, and M. Hasuo, Can. J. Phys., 89, 495.
[5] Disalignment rates of the neon 2p5 and 2p10 atoms due to helium atom collisions measured at temperatures between 77 and 294 K
H. Matsukuma, T. Shikama and M. Hasuo, J. Phys. B: At. Mol. Opt. Phys., 44, 075206.
[6]Evaluation of hydrogen atom density in the plasma core region based on the Balmer-α line profile
M. Goto, K. Sawada, K. Fujii, M. Hasuo and S. Morita, Nucl. Fusion, 51, 023005.
[7]Observation of the polarization resolved A2Δ→X2Π transition spectra of CH under a strong magnetic field relevant to a fusion plasma
T. Shikama and M. Hasuo, J. Nucl. Matter, 415, S1159.
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2010

[1] Zeff measurement using extreme ultraviolet bremsstrahlung emission in LHD
H. Zhou, S. Morita, M. Goto, C.F. Dong, J. Yanagibayashi and M. Hasuo, Rev. Sci. Instrum., 81, 10D706.
[2]Magnetic Axial Dependence of Hα Emission Location in Peripheral Plasmas of Large Helical Device as Determined by Plasma Polarization Spectroscopy
A. Iwamae, A. Sakaue, N. Neshi, J. Yanagibayashi, M. Hasuo, D. Nakamura, K. Sawada, M. Goto and S. Morita, Plasma Fusion Res., 5, 032.
[3]Progress in Impurity-Related Physics Experiments in LHD
S. Morita, et.al., (M. Hasuo, 14th author), Plasma Fusion Res., 5, S2004.
[4]Development of Multi-wavelength-range High-resolution Spectrometer for Hydrogen Atomic and Molecular Emission Lines
K.Fujii, T.Shikama, A.Iwamae, M.Goto, S.Morita, and M.Hasuo, Plasma Fusion Res., 5, S2079.
[5]Hydrogen emissions from peripheral plasmas in local island divertor and helical divertor configurations
A. Iwamae, A. Sakaue, N. Neshi, J. Yanagibayashi, M. Hasuo, M. Goto, and S. Morita, Phys. Plasma, 17, 090701.
[6]Hydrogen emission location, temperature and inward velocity in the peripheral helical plasma as observed with plasma polarization spectroscopy
A. Iwamae, A. Sakaue, N. Neshi, J. Yanagibayashi, M. Hasuo, M. Goto, and S. Morita, J. Phys. B: At. Mol. Opt. Phys., 43, 144019.
[7]Highly charged tungsten spectra observed from JT-60U plasmas at Te ~ 8 and 14 keV
J. Yanagibayashi, T. Nakano, A. Iwamae, H. Kubo, M. Hasuo, and K. Itami, J. Phys. B: At. Mol. Opt. Phys., 43, 144013.
[8]Calculation of Highly Charged Tungsten Ion Spectra of a Plasma at Te = 2 ~10 keV and Comparison with JT-60 Spectra
J.Yanagibayashi, T.Nakano, A.Iwamae, H.Kubo, M.Hasuo, and K.Itami, Nucl. Instrum. Methods A, 623, 741.
[9]Kinetic Energy Measurement of Hydrogen in LHD Peripheral Plasma with a Multi-wavelength-range Fine-resolution Spectrometer
K.Fujii, K.Mizushiri, T.Nishioka, T.Shikama, A.Iwamae, M.Goto, S.Morita, and M.Hasuo, Nucl. Instrum. Methods A, 623, 690.
[10]Development of multiwavelength-range high-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas
K. Fujii, K. Mizushiri, T. Nishioka, T. Shikama, A. Iwamae, M. Goto, S. Morita, S Kado, K. Sawada, and M. Hasuo, Rev. Sci. Instrum, 81, 033106.
[10]輻射再吸収とプラズマ分光診断
門信一郎,後藤基志,澤田圭司,岩前敦,蓮尾昌裕,J. Plasma Fusion Res., 86, 631-646 (2010).
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2009

[1]Calculation of magnetic effects on emission spectra of light diatomic molecules for diagnostic application of fusion edge plasmas
T.Shikama, K.Fujii, K.Mizutani, M.Hasuo, S.Kado and H.Zushi, Plasma Phys. Control. Fusion, 51, 122001.
[2]Edge and Core Impurity Transport Study with Spectroscopic Instruments in LHD
S.Morita, M.Goto, M.Kobayashi, S.Muto, M.B.Chowdhuri, C.Dong, H.Zhou, Z.Cu, K.Fujii, A.Furuzawa, M.Hasuo, A.Iwamae, Y.Jie,
M.Koubiti, I.Sakurai, Y Tawara, B.Wan, Z.Wu and N.Yamaguchi, Plasma Science and Technology, 11, 402.
[3] Depolarization of excited Ne*(2p53p; J=1) atoms due to He atom collisions
H.Matsukuma, C.Bahrim and M.Hasuo, Journal of Plasma and Fusion Research Series, 8, 169.
[4]Zeeman effect on disalignment of excited atoms by radiation re-absorption: Neon 2p2 atoms in a discharge plasma
K.Deguchi, T.Imagawa, T.Shikama and M.Hasuo, J. Phys. B: At. Mol. Opt. Phys., 42, 055403.
[5]Disalignment measurement of neon 2p2 atoms due to neon atom collisions in a glow discharge plasma at 77 and 300 K under a strongmagnetic field
T.Imagawa, T.Yoshida, T.Shikama and M.Hasuo, J. Phys. B: At. Mol. Opt. Phys., 42, 055202.
[6]Simulation of Electric Quadrupole and Magnetic Dipole Transition Efficiencies in Optical Near Fields Generated by a Subwavelength Slit Array
K.Deguchi, M.Okuda, A.Iwamae, H.Nakamura, K.Sawada and M.Hasuo, J. Phys. Soc. Jpn., 78, 024301.
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2008

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2007

[1]Correlation between friction of articular cartilage and reflectance intensity from superficial images
M.H.Naka, M.Hasuo, Y.Fuwa and K.Ikeuchi, Tribology International, 40, 200-207.
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2006

[1]Simulation of optical near field of a sub-wavelength gold slit array and its electric quadrupole interaction with 1s excitons in Cu2O
M.Okuda, K.Deguchi, A.Iwamae, H.Nakamura, K.Sawada and M.Hasuo, physica status solidi (c), 3, 3547-3552.
[2]Morphology changes of CuCl thin films induced by photo-irradiation
M.Hasuo, A.Shimamoto and T.Fijiwara, physica status solidi (c), 3, 3520-3526.
[3]Shift and broadening in attenuated total reflection spectra of the hyperfine structure resolved D2 line of dense rubidium vapor
R.Kondo, S.Tojo, T.Fujimoto and M.Hasuo. Phys. Rev. A, 73, 062504-(1-7).
[4]Cross Sections for Polarization Relaxation of Excited Neon Atoms by Helium Atom Collisions: Disalignment and Disorientation
T.Fujimoto, M.Hasuo and M.Nimura, J. of Plasma and Fusion Res. SERIES, 7, 210-212.
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2005

[1]A novel technique for evaluation of articular cartilage lubrication based on the surface plasmons resonance
M.H.Naka, Y.Arima, H.Iwata, M.Hasuo, Y.Fuwa, Y.Morita and K.Ikeuchi, Tribology and Interface Engineering Series 48, 'Life-Cycle Tribology ', Elsevier, 389- 397.
[2]Free Z3 Exciton Luminescence Spectra of Vapor-deposited CuCl Films
M.Hasuo, A.Shimamoto, N.Okuda, T.Fujiwara, A.Iwamae and T.Fujimoto, J. Phys. Soc. Jpn., 74, 3077-3081.
[3]Relaxation of atomic state multipoles by radiation re-absorption: Neon 2p2 atoms in a discharge plasma
M.Nimura, T.Imagawa, M.Hasuo and T.Fujimoto, J. Quant. Spectrosc. Ratiat. Transfer, 96, 547-564
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[4]Exciton Luminescence of CuCl Associated with a New Bound State Generated by Long Time Photo-irradiation
A.Shimamoto, T.Fujiwara, A.Iwamae, T.Fujimoto and M.Hasuo, J. Phys. Soc. Jpn., 74, 1625-1628.
[5]Oscillator-strength enhancement of electric-dipole forbidden transitions in evanescent light at total reflection
S.Tojo and M.Hasuo, Phys. Rev. A, 71, 12508(1-6).
[6]Precision measurement of the oscillator strength of the cesium 62S1/2→52D5/2 electric quadrupole transition in propagating and evanescent wave fields
S.Tojo, T.Fujimoto and M.Hasuo, Phys. Rev. A, 71, 12507(1-9).
[7]Exciton luminescence spectra of CuCl films and their change by photo-irradiation
M.Hasuo, A.Shimamoto and T.Fujimoto, J. Lumin, 112, 181-185.
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2004

[1]Measurement of depolarization of neon excited atoms due to helium atom collisions at low temperature
M.Nimura, M.Hasuo and T.Fujimoto, J. Phys. B: At. Mol. Opt. Phys, 37, 4647-4656 (2004).
[2]Absorption Enhancement of an Electric Quadrupole Transition of Cesium Atoms in an Evanescent Field
S.Tojo, M.Hasuo and T.Fujimoto, Phys. Rev. Lett., 92, 053001(1-4), (2004).
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2003

[1]Dynamics of Metastable Argon Atoms in a Thin Discharge Cell: Single Beam Absorption Spectroscopy and a Monte Carlo Study of the Velocity Distribution
S.Kasai, R.Mizutani, R.Kondo, M.Hasuo and T.Fujimoto, J. Phys. Soc. Jpn., 72, 1936-1942 (2003).
[2]Saturated Absorption Spectra of Metastable Argon Atoms in a Thin Discharge Cell
S.Kasai, R.Mizutani, M.Hasuo and T.Fujimoto, J. Phys. Soc. Jpn., 72, 1932-1935 (2003).
[3]Disalignment of excited atoms by radiation re-absorption: neon 2p2 atoms in a discharge plasma
M.Seo, M.Nishimura, M.Hasuo and T. Fujimoto, J. Phys. B: At. Mol. Opt. Phys., 36, 1869-1884 (2003).
[4]Disalignment rate coefficient of neon excited atoms due to helium atom collisions at low temperatures
M.Seo, T.Shimamura, T.Furutani, M.Hasuo, C.Bahrim and T. Fujimoto, J. Phys. B: At. Mol. Opt. Phys, 36, 1885-1898, (2003).
[5]Attenuated Total Reflection of the Rubidium D2 Line in Optically Dense Vapor
S.Tojo, Y.Murakami, M.Hasuo and T. Fujimoto, J. Phys. Soc. Jpn., 72, 1069-1072 (2003).
[6]Detection of cold metastable atoms at a surface
D.Schneble, M.Hasuo, T.Anker, T.Pfau and J. Mlynek, Rev. Sci. Instrum., 74, 2685-1689 (2003).
[7]Integrated atom-optical circuit with continuous-wave operation
D.Schneble, M.Hasuo, T.Anker, T.Pfau and J. Mlynek, J. Opt. Soc. Am. B, 20, 648-651 (2003).
[8]Two-photon excitation of excitons in CuCl in total reflection geometry
M.Hasuo, A.Shimamoto and T. Fujimoto, J. Microsc., 209, 177-181 (2003).
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2002

[1]Non-Maxwellian anisotropic velocity distribution of metastable argon atoms in a thin discharge cell
Y.Ohta, M.Hasuo and T. Fujimoto, Opt. Commun., 210, 245-250 (2002).
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