Configuration flexibility and extended regimes in Large Helical Device (2008)
Yamada, H., Komori, A., Ohyabu, N., Kaneko, O., Kawahata, K., Watanabe, K. Y., ...
Recent experimental results in the Large Helical Device have indicated that a large pressure gradient can be formed beyond the stability criterion for the Mercier (high-n) mode. While the stability...
MHD characteristics in the high beta regime of the Large Helical Device (2008)
Sakakibara, S., Yamada, H., Watanabe, K., Narushima, Y., Toi, K., Ohdachi, S., ...
The highest volume averaged beta values beta (t) of 2.2% at B-t = 0.75 T (gas puff) and 2.4% at D-t = 1.3 T (pellet) in helical devices have been achieved in LHD. The beta (t) dependence of MHD...
Impact of heat deposition profile on global confinement of NBI heated plasmas in the LHD (2008)
Yamada, H., Murakami, S., Yamazaki, K., Kaneko, O., Miyazawa, J., Sakamoto, R., ...
Energy confinement and heat transport of net-current-free NBI heated plasmas in the large helical device (LHD) are discussed with emphasis on density and power deposition profile dependences....
Recent advances in the LHD experiment (2008)
Motojima, O., Ohyabu, N., Komori, A., Kaneko, O., Yamada, H., Kawahata, K., ...
In the first four years of the LHD experiment, several encouraging results have emerged, the most significant of which is that MHD stability and good transport are compatible in the inward shifted...
Review on the progress of the LHD experiment (2008)
Motojima, O., Yamada, H., Komori, A., Watanabe, K. Y., Mutoh, T., Takeiri, Y., ...
Recent progress in the Large Helical Device (LHD) experiment during the last 2 yr is reviewed. The LHD has been extending its operational regime toward fusion-relevant conditions while taking...
Effects of global MHD instability on operational high beta-regime in LHD (2008)
Watanabe, K. Y., Sakakibara, S., Narushima, Y., Funaba, H., Narihara, K., Tanaka, K., ...
In the Large Helical Device (LHD), the highest operational averaged beta value has been expanded from 3.2% to 4% in the last 2 years by increasing the heating capability and exploring a new magnetic...
Data Structure for LHD Plasmas in the International Stellarator/Heliotron Profile Database (2008)
Funaba, H., Dinklage, A., Yamada, H., Yokoyama, M., Watanabe, K., Narihara, K., ...
Fluid features of the stochastic layer transport in LHD (2008)
Feng, Y., Kobayashi, M., Morisaki, T., Masuzaki, S., Miyazawa, J., Peterson, B. J., ...
Comparative Divertor-Transport Study for W7-AS and LHD (2008)
Feng, Y., Kobayashi, M., Ashikawa, N., Giannone, L., König, R., LHD Experimental Group, ...
Hanaguri, T., Kohsaka, Y., Davis, J. C., Lupien, C., Yamada, I., Azuma, M., ...
High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes but each cuprate has its own character. The study of the material dependence of the d-wave...
A muon-spin relaxation study of BiMnO3 (2007)
Lancaster, T., Blundell, S. J., Baker, P. J., Pratt, F. L., Hayes, W., Yamada, I., ...
We present the results of muon-spin relaxation measurements on ferromagnetic BiMnO3. Below T_C=98.0(1) K oscillations in the time-dependence of the muon polarization are observed, characteristic of a...
Experimental study of particle transport and density fluctuations in LHD (2006)
Tanaka, K, Michael, C, Sanin, AL, Vyacheslavov, LN, Kawahata, K, Murakami, S, ...
Self-sustained detachment in the Large Helical Device (2006)
Miyazawa, J, Masuzaki, S, Sakamoto, R, Arimoto, H, Kondo, K, Tamura, N, ...
Overview of progress in LHD experiments (2006)
Komori, A, Morisaki, T, Mutoh, T, Sakakibara, S, Takeiri, Y, Kumazawa, R, ...
Recent progress in large helical device experiments (2006)
Komori, A, Morisaki, T, Mutoh, T, Sakakibara, S, Takeiri, Y, Kumazawa, R, ...
Single-layer oxychloride superconductor Ca2-xCuO2Cl2 with A-site cation deficiency (2005)
Yamada, I, Belik, AA, Azuma, M, Harjo, S, Kamiyama, T, Shimakawa, Y, ...
Ohishi, K., Yamada, I., Koda, A., Higemoto, W., Saha, S. R., Kadono, R., ...
We report on the magnetic phase diagram of a hole-doped cuprate Ca$_{2-x}$Na$_{x}$CuO$_{2}$Cl$_{2}$, which is free from buckling of CuO$_2$ planes, determined by muon spin rotation and relaxation. It...
Extension and its characteristics of ECRH plasma in the LHD (2004)
Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Idei, H., Inagaki, S., ...
One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....
Extension and its characteristics of ECRH plasma in the LHD (2004)
Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Idei, H., Inagaki, S., ...
One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....
Extension and its characteristics of ECRH plasma in the LHD (2004)
Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Inagaki, S., Yokoyama, M., ...
One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....
Extension and its characteristics of ECRH plasma in the LHD (2004)
Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Inagaki, S., Yokoyama, M., ...
One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....
MHD instabilities and their effects on plasma confinement in Large Helical Device plasmas (2004)
Toi, K., Ohdachi, S., Yamamoto, S., Nakajima, N., Sakakibara, S., Watanabe, K. Y., ...
Iriyama, Y, Yokoyama, M, Yada, C, Jeong, SK, Yamada, I, Abe, T, ...
A demonstration of magnetic field optimization in LHD (2003)
Murakami, S., Yamada, H., Wakasa, A., Sasao, M., Isobe, M., Ozaki, T., ...
The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...
MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)
Toi, K., Ohdachi, S., Yamamoto, S., Nakajima, N., Sakakibara, S., Watanabe, K. Y., ...
MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...
Titanium-dioxide film formation using gas cluster ion beam assisted deposition technique (2003)
Nakatsu, O, Matsuo, J, Omoto, K, Seki, T, Takaoka, G, Yamada, I
Modeling of surface smoothing process by cluster ion beam irradiation (2003)
Nakai, A, Aoki, T, Seki, T, Matsuo, J, Takaoka, GH, Yamada, I
Hard DLC film formation by gas cluster ion beam assisted deposition (2003)
Kitagawa, T, Yamada, I, Toyoda, N, Tsubakino, H, Matsuo, J, Takaoka, GH, ...
Diagnostics for helical systems (2002)
Sudo, S., Mizuuchi, T., Ozaki, T., Nagayama, Y., Akiyama, T., ...
7th International Conference on Ion-implantation Technology (1990)
Takagi, T, Tokuyama, T, Namba, S, Matsuda, K, Tsou Sheung Tsun, Itoh, T, ...
ANTISYMMETRIC EXCHANGE INTERACTION IN KCuF3 : ITS DOMINANT EFFECT ON THE EPR LINE (1988)
We point out theoretically that the one-dimensional Heisenberg antiferromagnet KCuF3 should have the interaction of ∑dijSixSj with dij⊥c-axis. From the measurements of EPR linewidth, we...
Jamet, J., Ferré, J., Yamada, I., Itoh, M.
We measured the a-c temperature variation of the optical linear birefringence of mixed K2CuxMn1-xF4 single crystals for several values of x (0 < x < 1). It may be expressed as a combination of static...
Watanabe, M., Yokotani, A., Matsuura, M., Yamada, I.
Magnetic Domain observation on randomly mixed series K2Cu1-xCoxF4 is made by applying Faraday effect at low temperatures. A stripe shaped domain pattern is observed for the compounds with x ≲...
Yamada, I., Anbe, T., Yamaguchi, Y., Itoh, M.
We report ferromagnetic resonance of the two-dimensional randomly mixed systems, K2CuxCo(1-x)F4 and K2CuxMn(1-x)F4 with very low concentration of Co and Mn. In the ferromagnetically ordered state,...
ANTISYMMETRIC EXCHANGE INTERACTION IN KCuF3 : ITS DOMINANT EFFECT ON THE EPR LINE (1988)
We point out theoretically that the one-dimensional Heisenberg antiferromagnet KCuF3 should have the interaction of ∑dijSixSj with dij⊥c-axis. From the measurements of EPR linewidth, we...
Jamet, J., Ferré, J., Yamada, I., Itoh, M.
We measured the a-c temperature variation of the optical linear birefringence of mixed K2CuxMn1-xF4 single crystals for several values of x (0 < x < 1). It may be expressed as a combination of static...
Watanabe, M., Yokotani, A., Matsuura, M., Yamada, I.
Magnetic Domain observation on randomly mixed series K2Cu1-xCoxF4 is made by applying Faraday effect at low temperatures. A stripe shaped domain pattern is observed for the compounds with x ≲...
Yamada, I., Anbe, T., Yamaguchi, Y., Itoh, M.
We report ferromagnetic resonance of the two-dimensional randomly mixed systems, K2CuxCo(1-x)F4 and K2CuxMn(1-x)F4 with very low concentration of Co and Mn. In the ferromagnetically ordered state,...
ANTISYMMETRIC EXCHANGE INTERACTION IN KCuF3 : ITS DOMINANT EFFECT ON THE EPR LINE (1988)
We point out theoretically that the one-dimensional Heisenberg antiferromagnet KCuF3 should have the interaction of ∑dijSixSj with dij⊥c-axis. From the measurements of EPR linewidth, we...
Jamet, J., Ferré, J., Yamada, I., Itoh, M.
We measured the a-c temperature variation of the optical linear birefringence of mixed K2CuxMn1-xF4 single crystals for several values of x (0 < x < 1). It may be expressed as a combination of static...
Watanabe, M., Yokotani, A., Matsuura, M., Yamada, I.
Magnetic Domain observation on randomly mixed series K2Cu1-xCoxF4 is made by applying Faraday effect at low temperatures. A stripe shaped domain pattern is observed for the compounds with x ≲...
Yamada, I., Anbe, T., Yamaguchi, Y., Itoh, M.
We report ferromagnetic resonance of the two-dimensional randomly mixed systems, K2CuxCo(1-x)F4 and K2CuxMn(1-x)F4 with very low concentration of Co and Mn. In the ferromagnetically ordered state,...
Configuration Dependence of Energetic Ion Driven Alfven Eigenmodes in the Large Helical Device
Yamamoto, S., Toi, K., Nakajima, N., Ohdachi, S., Sakakibara, S., Nührenberg, C., ...
Data structure for LHD plasmas in the international profile database
Funaba, H., Dinklage, A., Yamada, H., Yokoyama, M., Watanabe, K., Narihara, K., ...