H. Tanaka

National Institute for Fusion Science, Tokitsu-chō, Gifu, Japan

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Publications (658)1462.43 Total impact

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    ABSTRACT: Search results for nucleon decays $p \rightarrow e^+X$, $p \rightarrow \mu^+X$, $n \rightarrow \nu\gamma$ (where $X$ is an invisible, massless particle) as well as di-nucleon decays $np \rightarrow e^+\nu$, $np \rightarrow \mu^+\nu$ and $np \rightarrow \tau^+\nu$ in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton $\cdot$ years, a search for these decays yields a result consistent with no signal. Accordingly, lower limits on the partial lifetimes of $\tau_{p \rightarrow e^+X} > 7.9 \times 10^{32}$ years, $\tau_{p \rightarrow \mu^+X} > 4.1 \times 10^{32}$ years, $\tau_{n \rightarrow \nu\gamma} > 5.5 \times 10^{32}$ years, $\tau_{np \rightarrow e^+\nu} > 2.6 \times 10^{32}$ years, $\tau_{np \rightarrow \mu^+\nu} > 2.2 \times 10^{32}$ years and $\tau_{np \rightarrow \tau^+\nu} > 2.9 \times 10^{31}$ years at a $90 \% $ confidence level are obtained. Some of these searches are novel.
  • H. Tanaka · S. Masuzaki · N. Ohno · T. Morisaki · Y. Tsuji
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    ABSTRACT: In order to investigate the blobby plasma transport in the Large Helical Device, we have measured electrostatic fluctuations around the divertor leg by using a newly-designed multi-pin reciprocating Langmuir probe. Near the low-field side edge of the divertor leg, positive spikes of ion saturation current fluctuation were observed. In addition, the electric field which correlates with the ion saturation current fluctuation was firstly evaluated with the neighboring floating potential measurement. Considering the positional relationship with the magnetic geometry, the identified direction of the electric field inside the blobs is consistent with the theoretically predicted E × B motion. By applying the conditional averaging method, a quantitative speed of the blobs was preliminary estimated.
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    ABSTRACT: The Mega Ampère Spherical Tokamak (MAST) programme is strongly focused on addressing key physics issues in preparation for operation of ITER as well as providing solutions for DEMO design choices. In this regard, MAST has provided key results in understanding and optimizing H-mode confinement, operating with smaller edge localized modes (ELMs), predicting and handling plasma exhaust and tailoring auxiliary current drive. In all cases, the high-resolution diagnostic capability on MAST is complemented by sophisticated numerical modelling to facilitate a deeper understanding. Mitigation of ELMs with resonant magnetic perturbations (RMPs) with toroidal mode number n RMP = 2, 3, 4, 6 has been demonstrated: at high and low collisionality; for the first ELM following the transition to high confinement operation; during the current ramp-up; and with rotating n RMP = 3 RMPs. n RMP = 4, 6 fields cause less rotation braking whilst the power to access H-mode is less with n RMP = 4 than n RMP = 3, 6. Refuelling with gas or pellets gives plasmas with mitigated ELMs and reduced peak heat flux at the same time as achieving good confinement. A synergy exists between pellet fuelling and RMPs, since mitigated ELMs remove fewer particles. Inter-ELM instabilities observed with Doppler backscattering are consistent with gyrokinetic simulations of micro-tearing modes in the pedestal. Meanwhile, ELM precursors have been strikingly observed with beam emission spectroscopy (BES) measurements. A scan in beta at the L–H transition shows that pedestal height scales strongly with core pressure. Gyro-Bohm normalized turbulent ion heat flux (as estimated from the BES data) is observed to decrease with increasing tilt of the turbulent eddies. Fast ion redistribution by energetic particle modes depends on density, and access to a quiescent domain with ‘classical’ fast ion transport is found above a critical density. Highly efficient electron Bernstein wave current drive (1 A W −1 ) has been achieved in solenoid-free start-up. A new proton detector has characterized escaping fusion products. Langmuir probes and a high-speed camera suggest filaments play a role in particle transport in the private flux region whilst coherence imaging has measured scrape-off layer (SOL) flows. BOUT++ simulations show that fluxes due to filaments are strongly dependent on resistivity and magnetic geometry of the SOL, with higher radial fluxes at higher resistivity. Finally, MAST Upgrade is due to begin operation in 2016 to support ITER preparation and importantly to operate with a Super-X divertor to test extended leg concepts for particle and power exhaust.
    Nuclear Fusion 07/2015; 55:104008. DOI:10.1088/0029-5515/55/10/104008 · 3.06 Impact Factor
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    ABSTRACT: Three-dimensional trajectories of incandescent dust particles in plasmas were observed with stereoscopic fast framing cameras in a large helical device. It proved that the dust is located in the peripheral plasma and most of the dust moves along the magnetic field lines with acceleration in the direction that corresponds to the plasma flow. ICRF heated long pulse plasma discharges were terminated with the release of large amounts of dust from a closed divertor region. After the experimental campaign, the traces of exfoliation of carbon rich mixed-material deposition layers were found in the divertor region. Transport of carbon dust is investigated using a modified dust transport simulation code, which can explain the observed dust trajectories. It also shows that controlling the radius of the dust particles to less than 1 mm is necessary to prevent the plasma termination by penetration of dust for the long pulse discharges. Dust transport simulation including heavy metal dust particles demonstrates that high heating power operation is effective for shielding the main plasma from dust penetration by an enhanced plasma flow effect and a high heat load onto the dust particles in the peripheral plasma. It shows a more powerful penetration characteristic of tungsten dust particles compared to that of carbon and iron dust particles.
    Nuclear Fusion 05/2015; 55(5):053014. DOI:10.1088/0029-5515/55/5/053014 · 3.06 Impact Factor
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    ABSTRACT: We have studied the electronic structure of bulk single crystals and epitaxial films of magnetite Fe$_3$O$_4$. Fe $2p$ core-level spectra show clear differences between hard x-ray (HAX-) and soft x-ray (SX-) photoemission spectroscopy (PES), indicative of surface effects. The bulk-sensitive spectra exhibit temperature ($T$)-dependent charge excitations across the Verwey transition at $T_V$=122 K, which is missing in the surface-sensitive spectra. An extended impurity Anderson model full-multiplet analysis reveals roles of the three distinct Fe-species (A-Fe$^{3+}$, B-Fe$^{2+}$, B-Fe$^{3+}$) below $T_V$ for the Fe $2p$ spectra, and its $T-$dependent evolution. The Fe $2p$ HAXPES spectra show a clear magnetic circular dichroism (MCD) in the metallic phase of magnetized 100-nm-thick films. The model calculations also reproduce the MCD and identify the magnetically distinct sites associated with the charge excitations. Valence band HAXPES shows finite density of states at $E_F$ for the polaronic metal with remnant order above $T_V$, and a clear gap formation below $T_V$. The results indicate that the Verwey transition is driven by changes in the strongly correlated and magnetically active B-Fe$^{2+}$ and B-Fe$^{3+}$ electronic states, consistent with resistivity and bulk-sensitive optical spectra.
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    ABSTRACT: A search for dinucleon decay into pions with the Super-Kamiokande detector has been performed with an exposure of 282.1 kiloton-years. Dinucleon decay is a process that violates baryon number by two units. We present the first search for dinucleon decay to pions in a large water Cherenkov detector. The modes $^{16}$O$(pp) \rightarrow$ $^{14}$C$\pi^{+}\pi^{+}$, $^{16}$O$(pn) \rightarrow$ $^{14}$N$\pi^{+}\pi^{0}$, and $^{16}$O$(nn) \rightarrow$ $^{14}$O$\pi^{0}\pi^{0}$ are investigated. No significant excess in the Super-Kamiokande data has been found, so a lower limit on the lifetime of the process per oxygen nucleus is determined. These limits are: $\tau_{pp\rightarrow\pi^{+}\pi^{+}} > 7.22 \times 10^{31}$ years, $\tau_{pn\rightarrow\pi^{+}\pi^{0}} > 1.70 \times 10^{32}$ years, and $\tau_{nn\rightarrow\pi^{0}\pi^{0}} > 4.04 \times 10^{32}$ years. The lower limits on each mode are about two orders of magnitude better than previous limits from searches for dinucleon decay in iron.
    Physical Review D 04/2015; 91(7). DOI:10.1103/PhysRevD.91.072009 · 4.64 Impact Factor
  • M Hoshino · H Murai · H Kato · M J Brunger · Y Itikawa · H Tanaka
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    ABSTRACT: There is no abstract available for this article.
    The Journal of Chemical Physics 03/2015; 142(12):129903. DOI:10.1063/1.4916381 · 2.95 Impact Factor
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    ABSTRACT: Hyper-Kamiokande will be a next generation underground water Cherenkov detector with a total (fiducial) mass of 0.99 (0.56) million metric tons, approximately 20 (25) times larger than that of Super-Kamiokande. One of the main goals of Hyper-Kamiokande is the study of $CP$ asymmetry in the lepton sector using accelerator neutrino and anti-neutrino beams. In this document, the physics potential of a long baseline neutrino experiment using the Hyper-Kamiokande detector and a neutrino beam from the J-PARC proton synchrotron is presented. The analysis has been updated from the previous Letter of Intent [K. Abe et al., arXiv:1109.3262 [hep-ex]], based on the experience gained from the ongoing T2K experiment. With a total exposure of 7.5 MW $\times$ 10$^7$ sec integrated proton beam power (corresponding to $1.56\times10^{22}$ protons on target with a 30 GeV proton beam) to a $2.5$-degree off-axis neutrino beam produced by the J-PARC proton synchrotron, it is expected that the $CP$ phase $\delta_{CP}$ can be determined to better than 19 degrees for all possible values of $\delta_{CP}$, and $CP$ violation can be established with a statistical significance of more than $3\,\sigma$ ($5\,\sigma$) for $76%$ ($58%$) of the $\delta_{CP}$ parameter space.
    Progress of Theoretical and Experimental Physics 12/2014; 2015(5). DOI:10.1093/ptep/ptv061 · 2.49 Impact Factor
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    ABSTRACT: A search for neutrino oscillations induced by Lorentz violation has been performed using 4,438 live-days of Super-Kamiokande atmospheric neutrino data. The Lorentz violation is included in addition to standard three-flavor oscillations using the non-perturbative Standard Model Extension (SME), allowing the use of the full range of neutrino path lengths, ranging from 15 to 12,800 km, and energies ranging from 100 MeV to more than 100 TeV in the search. No evidence of Lorentz violation was observed, so limits are set on the renormalizable isotropic SME coefficients in the $e\mu$, $\mu\tau$, and $e\tau$ sectors, improving the existing limits by up to seven orders of magnitude and setting limits for the first time in the neutrino $\mu\tau$ sector of the SME.
    Physical Review D 10/2014; 91(5). DOI:10.1103/PhysRevD.91.052003 · 4.64 Impact Factor
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    ABSTRACT: We present limits on sterile neutrino mixing using 4,438 live-days of atmospheric neutrino data from the Super-Kamiokande experiment. We search for fast oscillations driven by an eV$^2$-scale mass splitting and for oscillations into sterile neutrinos instead of tau neutrinos at the atmospheric mass splitting. When performing both these searches we assume that the sterile mass splitting is large, allowing $\sin^2(\Delta m^2 L/4E)$ to be approximated as $0.5$, and we assume that there is no mixing between electron neutrinos and sterile neutrinos ($|U_{e4}|^2 = 0$). No evidence of sterile oscillations is seen and we limit $|U_{\mu4}|^2$ to less than 0.041 and $|U_{\tau4}|^2$ to less than 0.18 for $\Delta m^2 > 0.8$ eV$^2$ at the 90% C.L. in a 3+1 framework. The approximations that can be made with atmospheric neutrinos allow these limits to be easily applied to 3+N models, and we provide our results in a generic format to allow comparisons with other sterile neutrino models.
    Physical Review D 10/2014; 91(5). DOI:10.1103/PhysRevD.91.052019 · 4.64 Impact Factor
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    ABSTRACT: We report absolute elastic differential cross sections for electron interactions with the C4F6 isomers, hexafluoro-1,3-butadiene (1,3-C4F6), hexafluoro-2-butyne (2-C4F6), and hexafluorocyclobutene (c-C4F6). The incident electron energy range is 1.5-200 eV, and the scattered electron angular range for the differential measurements varies from 15° to 150°. In all cases the absolute scale of the differential cross section was set using the relative flow technique, with helium as the reference species. Atomic-like behaviour in these scattering systems is shown here for the first time, and is further investigated by comparing the elastic cross sections for the C4F6 isomers with other fluorinated molecules, such as SF6 and CnF6 (n = 2, 3, and 6). We note that for all the six-F containing molecules, the scattering process for electron energies above 30 eV is indistinguishable. Finally, we report results for calculations of elastic differential cross sections for electron scattering from each of these isomers, within an optical potential method and assuming a screened corrected independent atom representation. The level of agreement between these calculations and our measurements is found to be quite remarkable in all cases.
    The Journal of Chemical Physics 09/2014; 141(12):124302. DOI:10.1063/1.4895903 · 2.95 Impact Factor
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    ABSTRACT: Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Telescope Array and the Pierre Auger Observatory above $10^{19}$ eV is presented in this work. The resulting multipolar expansion of the flux of cosmic rays allows us to perform a series of anisotropy searches, and in particular to report on the angular power spectrum of cosmic rays above $10^{19}$ eV. No significant deviation from isotropic expectations is found throughout the analyses performed. Upper limits on the amplitudes of the dipole and quadrupole moments are derived as a function of the direction in the sky, varying between 7% and 13% for the dipole and between 7% and 10% for a symmetric quadrupole.
    The Astrophysical Journal 09/2014; 794(2). DOI:10.1088/0004-637X/794/2/172 · 5.99 Impact Factor
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    ABSTRACT: The trilepton nucleon decay modes p→e^{+}νν and p→μ^{+}νν violate |Δ(B-L)| by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of τ_{p→e^{+}νν}>1.7×10^{32} years and τ_{p→μ^{+}νν}>2.2×10^{32} years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.
    Physical Review Letters 09/2014; 113(10):101801. · 7.51 Impact Factor
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    ABSTRACT: The trilepton nucleon decay modes $p \rightarrow e^+ \nu \nu$ and $p \rightarrow \mu^+ \nu \nu$ violate $|\Delta (B - L)|$ by two units. Using data from a 273.4 kiloton year exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of $\tau_{p \rightarrow e^+ \nu \nu} > 1.7 \times 10^{32}$ years and $\tau_{p \rightarrow \mu^+ \nu \nu} > 2.2 \times 10^{32}$ years at a $90 \% $ confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.
    Physical Review Letters 09/2014; 113(10). DOI:10.1103/PhysRevLett.113.101801 · 7.51 Impact Factor
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    ABSTRACT: Previous measurements of the composition of Ultra-High energy Cosmic Rays (UHECRs) made by the High Resolution Fly's Eye (HiRes) and Pierre Auger Observatory (PAO) are seemingly contradictory but utilize different detection methods, as HiRes was a stereo detector and PAO is a hybrid detector. The five year Telescope Array (TA) Middle Drum hybrid composition measurement is similar in methodology to PAO, and good agreement is evident between data and a light, largely protonic composition using simulations from a variety of hadronic models for the comparison of both elongation rate and shower fluctuations. This is in good agreement with the HiRes results. This analysis is presented using two methods: data cuts using simple geometrical variables and a new pattern recognition technique.
    Astroparticle Physics 08/2014; 64. DOI:10.1016/j.astropartphys.2014.11.004 · 3.58 Impact Factor
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    ABSTRACT: Temperature-dependent conductivities at dc and terahertz (THz) frequency region (σTHz(ω,T)) were obtained for a strongly correlated (La0.275Pr0.35Ca0.375)MnO3 (LPCMO) film using THz time domain spectroscopy. A composite model that describes σTHz(ω,T) for LPCMO through the insulator-metal transition (IMT) was established by incorporating Austin-Mott model characterizing the hopping of localized electrons and Drude model explaining the behavior of free electrons. This model enables us to reliably investigate the dc transport dynamics from THz conductivity measurement, i.e., simultaneously evaluate the dc conductivity and the competing composition of metal and insulator phases through the IMT, reflecting the changes in microscopic conductivity of these phases.
    Applied Physics Letters 07/2014; 105(2):023502-023502-4. DOI:10.1063/1.4890109 · 3.30 Impact Factor
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    T Sasaki · Y Kawabata · N Suzuki · H Tanaka · M Sano · S Kato · A Takemura · N Unno · T Kojima · K Sato
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    ABSTRACT: D2-40, a monoclonal antibody against podoplanin, is a selective marker of lymphatic endothelium and is widely used for research on and diagnosis of pathology of lymphatic vessels. We examined the relation between the duration of tissue section storage and changes in immunostaining by D2-40 antibody; we evaluated also the effects of preservation methods on changes in immunostaining during storage. Staining by D2-40 was attenuated by long-term preservation of scalp skin and lymph node sections at room temperature. The attenuation of D2-40 staining in stored sections was improved by preservation at low temperature, i.e., 4° or - 30° C. We investigated also the immunostaining of preserved tissue sections using NZ-1 and Lyve-1, which are antibodies against lymphatic endothelium markers. Staining by NZ-1 or Lyve-1 antibody was detected clearly in sections that had been stored for 16 weeks. Our study suggests that either long-term storage of D2-40 immunostained tissue sections should be avoided or the section should be preserved at low temperature.
    Biotechnic and Histochemistry 06/2014; DOI:10.3109/10520295.2013.821166 · 1.44 Impact Factor
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    ABSTRACT: As a part of our efforts to characterize the electron attachment reactions of the group IV tetrahalides, XY4 (X = C, Si, Ge and Y = F, Cl, Br) we here follow up on our previous study on XF4 and report electron attachment to the tetrabromides: CBr4, SiBr4 and GeBr4 in the incident electron energy range from about 0 to 10 eV. The formation of Br−, XBr3−, XBr2− and Br2− is observed from all these compounds, and additionally the molecular anion is observed from SiBr4. The main DEA contributions from CBr4 and GeBr4 are observed through a low lying resonance, which we assign as a T2 shape resonance associated with a single occupation of the t2 symmetry LUMO + 1 of these molecules. This resonance is also apparent in the ion yield from SiBr4, but there the main contributions are the molecular anion and Br− in a narrow energy range peaking at 0 eV. We attribute these 0 eV contributions to a vibrational Feshbach resonance associated with the a1 symmetry LUMO. Further resonances are observed, for all the compounds investigated here, in the energy range between 3-6 eV. To establish the thermochemical thresholds for the individual channels we have conducted DFT calculations from which we report the threshold values, bond dissociation energies and electron affinities for individual fragments and their neutral precursors. These values are compared to values in the literature where available, and discussed in context of our experimental results.
    International Journal of Mass Spectrometry 05/2014; 365. DOI:10.1016/j.ijms.2014.01.008 · 1.97 Impact Factor
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    ABSTRACT: Introduction and Aims: Vertebral Fractures (VFs) are common in the general population and in Chronic Kidney Disease patients. VFs are associated with vascular calcifications (VCs) and to an increased risk of mortality. The Spine Deformity Index (SDI) is a summary measure of the VFs status, incorporating both the number and severity of VFs in a score. The aim of this study was to evaluate the relationships between the classic SDI, laboratory parameters of bone metabolism, and vascular calcifications within the context of the EVERFRACT study. Methods: In 387 hemodialysis patients, aged 64.2 ± 14.1 years, we determined routine biochemical parameters and: 25(OH)vitamin D, total Bone Gla Protein (BGP), undercarboxylated BGP (ucBGP) and total Matrix Gla Protein (MGP). We performed laterolateral x-Rays of the spine (T5 to L4) to evaluate both VFs (defined as reduction > 20% in vertebral body height) by Quantitative Vertebral Morphometry and VCs, aortic (AoVC) and iliac (IaVC), by Witteman’s method. We divided the SDI score by the number of fractures, in order to obtain a more precise index of fracture severity (corrected-SDI: c-SDI). Results: We found a high prevalence (55.3%, n=214) of VFs. The mean SDI was 1.4 ± 1.74. The mean c-SDI was 0.74 ± 0.75. VFs had a grade of severity that was low through T5-T10 and higher through T11-L3. The severity of fractures was highlighted only by c-SDI (see Table). We found 80.6% of AAoC and 55.6% of IAC. SDI was significantly associated with AAoC (OR=1.15, 95% CI 1.02-1.30, p=0.023). A SDI >1 was significantly associated with: sex (male OR 1.86, 95% CI 1.20-2.91, p=0.007), age (OR 1.03, 95% 1.01-1.05, p=0.0003) and albumin ≥ 3.5 g/dL (OR 0.54, 95% CI 0.31-0.93, p=0.026). c-SDI score was significantly associated with AAoC (OR=1.48, 95% CI 1.11-1.98, p=0.0009) and with IAC (OR=1.54, 95% CI 1.06-2.24, p=0.025). A c-SDI >1 was significantly associated with: age (OR 1.05, 95% CI 1.03-1.07, p<0.0001), LDL Cholesterol ≥ 90 mg/dL (OR 1.74, 95% 1.04-2.92, p=0.0354) and ucBGP ≥ 17.2 mcg/L (OR 0.35, 95% CI 0.18-0.70, p=0.0025). Conclusions: SDI and c-SDI score associated with bone and vascular markers. c-SDI score performed better in the evaluation of the grade of fracture severity and it showed a stronger association with VC and vascular markers. This is the first time that the association of SDI with bone biochemical parameters and VC has been reported. View this table: In this window In a new window
    Nephrology Dialysis Transplantation 05/2014; 29(suppl 3):iii263-iii271. DOI:10.1093/ndt/gfu157 · 3.58 Impact Factor
  • K Shigemura · M Kitajima · T Odagiri · A Suga · H Kato · M Hoshino · H Tanaka · K Ito
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    ABSTRACT: Absolute total cross sections for electron scattering from He and Ne at electron energies ranging from 6 meV to 20 eV were obtained with the experimental technique employing the threshold-photoelectron source. The measured total cross sections were compared with previous experimental and theoretical cross sections.
    Journal of Physics Conference Series 04/2014; 488(4):042015. DOI:10.1088/1742-6596/488/4/042015

Publication Stats

7k Citations
1,462.43 Total Impact Points


  • 2009–2015
    • National Institute for Fusion Science
      • Department of Helical Plasma Research
      Tokitsu-chō, Gifu, Japan
    • National Hospital Organization Sendai Medical Center
      Сендай, Miyagi, Japan
  • 1997–2015
    • Sophia University
      • • Division of Physics
      • • Department of Materials and Life Sciences
      Edo, Tōkyō, Japan
    • French National Centre for Scientific Research
      Lutetia Parisorum, Île-de-France, France
  • 2014
    • Kyoto Institute of Technology
      Kioto, Kyōto, Japan
  • 1999–2014
    • Tokyo Institute of Technology
      • • Department of Physics
      • • Chemistry Department
      • • Research Center for Low Temperature Physics
      Edo, Tōkyō, Japan
  • 1994–2014
    • Osaka University
      • • Institute of Scientific and Industrial Research
      • • Department of Systems Innovation
      • • Graduate School of Engineering Sciences
      Suika, Ōsaka, Japan
  • 1990–2014
    • The University of Tokyo
      • • Institute of Medical Science
      • • Department of Quantum Engineering and Systems Sciences
      • • Institute of Industrial Science
      Tōkyō, Japan
  • 1986–2014
    • Kyoto University
      • • Graduate School of Energy Science
      • • Department of Fundamental Energy Science
      • • Department of Physics II
      Kioto, Kyōto, Japan
    • Saitama Medical University
      • Department of Physiology
      Saitama, Saitama, Japan
  • 2013
    • National Institutes Of Natural Sciences
      Edo, Tōkyō, Japan
  • 2009–2013
    • Aichi Cancer Center
      Ōsaka, Ōsaka, Japan
  • 2001–2013
    • Osaka City University
      • • Department of Radiology
      • • Graduate School of Science
      Ōsaka, Ōsaka, Japan
    • SPring-8
      Saitama, Saitama, Japan
  • 2009–2012
    • Tata Institute of Fundamental Research
      • Department of Astronomy and Astrophysics
      Mumbai, Mahārāshtra, India
  • 2004–2012
    • National Institute of Advanced Industrial Science and Technology
      • Research Institute for Ubiquitous Energy Devices
      Tsukuba, Ibaraki, Japan
    • University of Yamanashi
      • Department of Mechanical System Engineering
      Kōhu, Yamanashi, Japan
  • 1999–2012
    • Nagoya University
      • Graduate School of Engineering
      Nagoya, Aichi, Japan
  • 2011
    • RIKEN
      • Excitation Order Research Team
      Вако, Saitama, Japan
  • 2009–2011
    • Yonago National College of Technology
      Yonago, Tottori, Japan
  • 2008–2011
    • Hamamatsu University School Of Medicine
      Hamamatu, Shizuoka, Japan
    • National Center of Neurology and Psychiatry
      • Department of Child Neurology
      Кодаиры, Tōkyō, Japan
    • Osaka Prefecture University
      • Department of Chemical Engineering
      Sakai, Ōsaka, Japan
    • Shimane University
      • Department of Physics and Material Science
      Matsu, Shimane Prefecture, Japan
    • Mie University
      Tu, Mie, Japan
  • 2010
    • Hamamatsu University School of Medicine
      • Division of Vascular Surgery
      Hamamatu, Shizuoka, Japan
  • 2009–2010
    • Toshiba Corporation
      Edo, Tōkyō, Japan
  • 2008–2009
    • Kagawa University
      • Department of Pharmacy
      Takamatu, Kagawa, Japan
  • 1997–2008
    • Hokkaido University
      • • Department of Urology
      • • Division of Chemistry
      Sapporo, Hokkaidō, Japan
  • 1994–2008
    • University of Tsukuba
      • Institute of Applied Biochemistry
      Tsukuba, Ibaraki, Japan
  • 2006–2007
    • Tokyo Medical and Dental University
      • Department of Bioinformatics
      Tokyo, Tokyo-to, Japan
    • Bielefeld University
      • Faculty of Physics
      Bielefeld, North Rhine-Westphalia, Germany
  • 2005–2007
    • Niigata University
      • Department of Physics
      Niahi-niigata, Niigata, Japan
    • Medical University of Sofia
      • Department of Physics and Biophysics
      Sofia, Oblast Sofiya-Grad, Bulgaria
    • University of Rome Tor Vergata
      Roma, Latium, Italy
    • Nihon University
      • Department of Periodontology
      Edo, Tōkyō, Japan
  • 2004–2007
    • National Institute for Materials Science
      • Advanced Materials Laboratory
      Tsukuba, Ibaraki, Japan
  • 1994–2007
    • Hiroshima University
      • Faculty of Integrated Arts and Sciences
      Hiroshima-shi, Hiroshima-ken, Japan
  • 1966–2007
    • Tottori University
      • • Department of Electrical and Electronic Engineering
      • • Third Department of Internal Medicine
      • • School of Medicine
      TTJ, Tottori, Japan
  • 2001–2006
    • Japan Synchrotron Radiation Research Institute (JASRI)
      Tatsuno, Hyōgo, Japan
  • 2002–2005
    • National Institute of Agrobiological Sciences
      Tsukuba, Ibaraki, Japan
  • 2003–2004
    • Hosei University
      Edo, Tōkyō, Japan
    • Tsukuba Research Institute
      Edo, Tōkyō, Japan
    • Institute for Molecular Science
      Okazaki, Aichi, Japan
    • Yonsei University
      • Department of Chemistry
      Sŏul, Seoul, South Korea
    • Nagaoka University of Technology
      • Department of Chemistry
      Нагаока, Niigata, Japan
  • 2002–2004
    • Hitachi Cable, Ltd.
      Edo, Tōkyō, Japan
  • 1997–2004
    • Osaka Medical Center for Cancer and Cardiovascular Diseases
      Ōsaka, Ōsaka, Japan
  • 1998–2001
    • Aichi University of Education
      Kariya-chō, Aichi, Japan
  • 2000
    • Kawasaki Medical University
      • Department of Urology
      Kurasiki, Okayama, Japan
  • 1999–2000
    • Forestry and Forest Products Research Institute
      • Forest Environment Group
      Tsukuba, Ibaraki, Japan
  • 1995–2000
    • Mohawk Innovative Technology, Inc.
      Albany, New York, United States
  • 1990–1991
    • University of Occupational and Environmental Health
      • Department of Physiology
      Kitakyūshū, Fukuoka, Japan
  • 1988
    • HAMAMATSU Photonics K.K.
      Hamamatu, Shizuoka, Japan