Development of net-current free heliotron plasmas in the Large Helical Device (2009)
Komori, A., Yamada, H., Sakakibara, S., Kaneko, O., Kawahata, K., Mutoh, T., ...
Optical measurement of Cs distribution in the large negative ion source (2008)
Ikeda, K., Nagaoka, K., Takeiri, Y., Fantz, U., Kaneko, O., Osakabe, M., ...
Nationwide measurements of cosmic-ray dose rates throughout Japan (2008)
Nagaoka, K., Hiraide, I., Sato, K., Nakamura, T.
Cosmic-ray dose rates on the ground were measured throughout Japan. Neutron dose rates were measured as ambient dose equivalent rates (H*(10)) at 240 points using high-sensitivity neutron REM...
Two-dimensional plasma structure in the edge region of the compact helical system (2007)
Nakamura, K., Iguchi, H., Schweinzer, J., Shimizu, A., Isobe, M., Takahashi, D., ...
High-power negative ion sources for neutral beam injectors in large helical device (2007)
Takeiri, Y., Kaneko, O., Tsumori, K., Fantz, U., Ikeda, K., Nagaoka, K., ...
Measurements of neutron dose rates with a balloon in Japan (2007)
Nagaoka, K., Hiraide, I., Sato, K., Yamagami, T., Nakamura, T., Yabutani, T.
Measurements of cosmic-ray neutron dose rates with a balloon in Sanriku, Japan (geographic location: 39° N, 142° E; corresponding geomagnetic latitude: 30° N) were conducted at an altitude from...
Isobe, M, Toi, K, Matsushita, H, Goto, K, Suzuki, C, Nagaoka, K, ...
Isobe, M, Spong, DA, Shimizu, A, Toi, K, Matsushita, H, Nagaoka, K, ...
Local island divertor experiments on LHD (2005)
Morisaki,T., Masuzaki,S., Komori,A., Ohyabu,N., Kobayashi,M., Feng,Y., ...
Local island divertor experiments on LHD (2005)
Morisaki, T., Masuzaki, S., Komori, A., Ohyabu, N., Kobayashi, M., Feng, Y., ...
Tripolar vortex in a plasma (2005)
Nagaoka, K, Yoshimura, S, Kado, S, Kono, M, ...
A tripolar vortex is spontaneously generated in a magnetized plasma. The How velocity field of ions has been measured with a directional Langmuir probe, exhibiting the tripolar structure in vorticity...
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....
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....
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., ...
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., 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....
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., ...
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....
Review on the progress of the LHD experiment (2004)
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...
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,...
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,...
Recent advances in the LHD experiment (2003)
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...
Experimental observation of a tripolar vortex in a plasma (2003)
Hara, K, Nagaoka, K, Yoshimura, S, Kono, M, ...
A tripolar vortex, three aligned vortices with alternate signs of polarity of rotation, has been observed in a plasma for the first time. The tripolar vortex always appears with a deep density...
Local Island Divertor Experiments on LHD
Morisaki,T., Masuzaki,S., Komori,A., Ohyabu,N., Kobayashi,M., Feng,Y., ...
Carboxyphosphonoenolpyruvate phosphonomutase, a novel enzyme catalyzing C-P bond formation.
Hidaka, T, Imai, S, Hara, O, Anzai, H, Murakami, T, Nagaoka, K, ...
An enzyme catalyzing the formation of an unusual C-P bond that is involved in the biosynthesis of the antibiotic bialaphos (BA) was isolated from the cell extract of a mutant (NP71) of Streptomyces...
Molecular cloning and characterization of the Streptomyces hygroscopicus alpha-amylase gene.
Hoshiko, S, Makabe, O, Nojiri, C, Katsumata, K, Satoh, E, Nagaoka, K
We have isolated and sequenced a gene (amy) coding for alpha-amylase (EC 3.2.1.1.) from the Streptomyces hygroscopicus genome (H. Hidaka, Y. Koaze, K. Yoshida, T. Niwa, T. Shomura, and T. Niida, Die...
Transcriptional regulation of bialaphos biosynthesis in Streptomyces hygroscopicus.
Anzai, H, Murakami, T, Imai, S, Satoh, A, Nagaoka, K, Thompson, C J
A DNA sequence (brpA) which regulates the expression of the genes of the bialaphos biosynthesis pathway (bap) in Streptomyces hygroscopicus was identified and characterized. A newly isolated...
Streptomyces hygroscopicus has two glutamine synthetase genes.
Kumada, Y, Takano, E, Nagaoka, K, Thompson, C J
Streptomyces hygroscopicus, which produces the glutamine synthetase inhibitor phosphinothricin, possesses at least two genes (glnA and glnB) encoding distinct glutamine synthetase isoforms (GSI and...
Carboxyphosphonoenolpyruvate phosphonomutase, a novel enzyme catalyzing C-P bond formation.
Hidaka, T, Imai, S, Hara, O, Anzai, H, Murakami, T, Nagaoka, K, ...
An enzyme catalyzing the formation of an unusual C-P bond that is involved in the biosynthesis of the antibiotic bialaphos (BA) was isolated from the cell extract of a mutant (NP71) of Streptomyces...
Molecular cloning and characterization of the Streptomyces hygroscopicus alpha-amylase gene.
Hoshiko, S, Makabe, O, Nojiri, C, Katsumata, K, Satoh, E, Nagaoka, K
We have isolated and sequenced a gene (amy) coding for alpha-amylase (EC 3.2.1.1.) from the Streptomyces hygroscopicus genome (H. Hidaka, Y. Koaze, K. Yoshida, T. Niwa, T. Shomura, and T. Niida, Die...
Transcriptional regulation of bialaphos biosynthesis in Streptomyces hygroscopicus.
Anzai, H, Murakami, T, Imai, S, Satoh, A, Nagaoka, K, Thompson, C J
A DNA sequence (brpA) which regulates the expression of the genes of the bialaphos biosynthesis pathway (bap) in Streptomyces hygroscopicus was identified and characterized. A newly isolated...
Streptomyces hygroscopicus has two glutamine synthetase genes.
Kumada, Y, Takano, E, Nagaoka, K, Thompson, C J
Streptomyces hygroscopicus, which produces the glutamine synthetase inhibitor phosphinothricin, possesses at least two genes (glnA and glnB) encoding distinct glutamine synthetase isoforms (GSI and...