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Journal Articles

Spontaneous magnetic field and disorder effects in BaPtAs$$_{1-x}$$Sb$$_x$$ with a honeycomb network

Adachi, Tadashi*; Ogawa, Taiki*; Komiyama, Yota*; Sumura, Takuya*; Saito-Tsuboi, Yuki*; Takeuchi, Takaaki*; Mano, Kohei*; Manabe, Kaoru*; Kawabata, Koki*; Imazu, Tsuyoshi*; et al.

Physical Review B, 111(10), p.L100508_1 - L100508_6, 2025/03

 Times Cited Count:1 Percentile:24.47(Materials Science, Multidisciplinary)

Journal Articles

Effect of surface freezing of a cationic surfactant and $$n$$-alkane mixed adsorbed film on counterion distribution and surface dilational viscoelasticity studied by total reflection XAFS and surface quasi-elastic light scattering

Matsubara, Satoshi*; Funatsu, Teruko*; Tanida, Hajime; Aratono, Makoto*; Imai, Yosuke*; Matsubara, Hiroki*

Langmuir, 39(22), p.7759 - 7765, 2023/06

 Times Cited Count:4 Percentile:23.24(Chemistry, Multidisciplinary)

Journal Articles

High temperature gas-cooled reactors

Takeda, Tetsuaki*; Inagaki, Yoshiyuki; Aihara, Jun; Aoki, Takeshi; Fujiwara, Yusuke; Fukaya, Yuji; Goto, Minoru; Ho, H. Q.; Iigaki, Kazuhiko; Imai, Yoshiyuki; et al.

High Temperature Gas-Cooled Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.5, 464 Pages, 2021/02

As a general overview of the research and development of a High Temperature Gas-cooled Reactor (HTGR) in JAEA, this book describes the achievements by the High Temperature Engineering Test Reactor (HTTR) on the designs, key component technologies such as fuel, reactor internals, high temperature components, etc., and operational experience such as rise-to-power tests, high temperature operation at 950$$^{circ}$$C, safety demonstration tests, etc. In addition, based on the knowledge of the HTTR, the development of designs and component technologies such as high performance fuel, helium gas turbine and hydrogen production by IS process for commercial HTGRs are described. These results are very useful for the future development of HTGRs. This book is published as one of a series of technical books on fossil fuel and nuclear energy systems by the Power Energy Systems Division of the Japan Society of Mechanical Engineers.

Journal Articles

Effect of the headgroup structure on counterion binding in adsorbed surfactant films investigated by total reflection X-ray absorption fine structure spectroscopy

Imai, Yosuke*; Tokiwa, Yuhei*; Ueno, Shusaku*; Tanida, Hajime; Watanabe, Iwao*; Matsubara, Hiroki*; Takiue, Takanori*; Aratono, Makoto*

Bulletin of the Chemical Society of Japan, 91(10), p.1487 - 1494, 2018/10

 Times Cited Count:2 Percentile:6.39(Chemistry, Multidisciplinary)

Competitive binding of binary mixed counterions to the headgroups of adsorbed surfactant films has been investigated at solution surfaces by total reflection X-ray absorption fine structure (XAFS) spectroscopy. The obtained extended XAFS $$chi$$ spectra for bromide counterions are linear combinations of the spectra of fully hydrated bromide ions (free Br) and partially dehydrated bromide ions bound to the headgroups of the surfactant ions (bound Br). From the fraction of bound Br in counterion mixed systems, two series of the relative strengths of counterion binding are proposed for the trimethylammonium (TA$$^{+}$$) and 3-methylimidazolium (MIM$$^{+}$$) headgroups: (a) TA-SO$$_{4}$$ $$<$$ TA-Cl $$<$$ TA-Br $$<$$ TA-BF$$_{4}$$ and (b) MIM-Br $$<$$ TA-Br $$<$$ TA-BF$$_{4}$$ $$<$$ MIM-BF$$_{4}$$. For the TA headgroup, matching the hydration of the headgroups and counterions gives series (a) according to Collins' law, which states that the tendency of contact ion pair formation becomes larger when the absolute values of the hydration enthalpies of the ions match. For the MIM headgroup, the number of binding sites of hydrogen bonds between the MIM headgroup and counterion is essential, which leads to series (b) because of competition between the counterion and water for interaction with the MIM headgroup.

Journal Articles

Progress of divertor simulation research toward the realization of detached plasma using a large tandem mirror device

Nakashima, Yosuke*; Takeda, Hisahito*; Ichimura, Kazuya*; Hosoi, Katsuhiro*; Oki, Kensuke*; Sakamoto, Mizuki*; Hirata, Mafumi*; Ichimura, Makoto*; Ikezoe, Ryuya*; Imai, Tsuyoshi*; et al.

Journal of Nuclear Materials, 463, p.537 - 540, 2015/08

 Times Cited Count:22 Percentile:82.13(Materials Science, Multidisciplinary)

Journal Articles

Development of divertor simulation research in the GAMMA 10/PDX tandem mirror

Nakashima, Yosuke*; Sakamoto, Mizuki*; Yoshikawa, Masayuki*; Oki, Kensuke*; Takeda, Hisahito*; Ichimura, Kazuya*; Hosoi, Katsuhiro*; Hirata, Mafumi*; Ichimura, Makoto*; Ikezoe, Ryuya*; et al.

Proceedings of 25th IAEA Fusion Energy Conference (FEC 2014) (CD-ROM), 8 Pages, 2014/10

Journal Articles

Calibration of gafchromic dosimetry films for large-area ion-beam distribution measurement

Ishizaka, Tomohisa; Imai, Koji*; Yuri, Yosuke; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 9th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.594 - 596, 2013/08

no abstracts in English

Journal Articles

Use of gafchromic dosimetry films to measure a large-area ion-beam distribution

Ishizaka, Tomohisa; Imai, Koji*; Yuri, Yosuke; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 157, 2013/01

Journal Articles

Possible magnetic chirality in optically chiral magnet [Cr(CN)$$_6$$][Mn($$S$$)-pnH(H$$_2$$O)](H$$_2$$O) probed by muon spin rotation and relaxation

Oishi, Kazuki; Higemoto, Wataru; Koda, Akihiro*; Saha, S. R.*; Kadono, Ryosuke*; Inoue, Katsuya*; Imai, Hiroyuki*; Higashikawa, Hiroyuki*

Journal of the Physical Society of Japan, 75(6), p.063705_1 - 063705_5, 2006/06

 Times Cited Count:13 Percentile:58.84(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Photo-realistic visualization of bubbly flow by grid computing

Ogawa, Satoi*; Aoki, Takayuki*; Imai, Yosuke*; Takase, Kazuyuki

Nihon Kikai Gakkai Dai-18-Kai Keisan Rikigaku Koenkai Koen Rombunshu, p.795 - 796, 2005/11

no abstracts in English

Journal Articles

The Design of a tapered dimple-type mode converter/launcher for high-power gyrotrons

Hirata, Yosuke*; Mitsunaka, Yoshika*; Hayashi, Kenichi*; Ito, Yasuyuki*; Sakamoto, Keishi; Imai, Tsuyoshi

IEEE Transactions on Plasma Science, 31(1), p.142 - 145, 2003/02

 Times Cited Count:11 Percentile:32.57(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Development of 170GHz high power gyrotron and transmission line for ECH in JAERI

Sakamoto, Keishi; Kasugai, Atsushi; Tsuneoka, Masaki; ; Imai, Tsuyoshi; ; Hayashi, Kenichi*; Mitsunaka, Yoshika*; Hirata, Yosuke*; ; et al.

Proceedings of 17th IEEE/NPSS Symposium Fusion Engineering (SOFE'97), 1, p.441 - 444, 1998/00

no abstracts in English

Journal Articles

Development of high power 170GHz gyrotron for ITER

Sakamoto, Keishi; Kasugai, Atsushi; Tsuneoka, Masaki; Takahashi, Koji; ; Imai, Tsuyoshi; ; Hayashi, Kenichi*; Mitsunaka, Yoshika*; Hirata, Yosuke*; et al.

22nd International Conference on Infrared and Millimeter Waves Conference Digest, p.106 - 107, 1997/00

no abstracts in English

Journal Articles

Cold test of gyrotron output ware-beam splitter and combiner

Mitsunaka, Yoshika*; Hirata, Yosuke*; Hayashi, Kenichi*; Ito, Yasuyuki*; Sakamoto, Keishi; Kasugai, Atsushi; Takahashi, Koji; Imai, Tsuyoshi

22nd International Conference on Infrared and Millimeter Waves Conference Digest, p.19 - 20, 1997/00

no abstracts in English

Journal Articles

Development of 170GHz long pulse gyrotron with depressed collector

Kasugai, Atsushi; Sakamoto, Keishi; Tsuneoka, Masaki; Takahashi, Koji; Maebara, Sunao; Imai, Tsuyoshi; Kariya, Tsuyoshi*; Hayashi, Kenichi*; Mitsunaka, Yoshika*; Hirata, Yosuke*

Fusion Technology 1996, 1, p.549 - 552, 1996/00

no abstracts in English

Journal Articles

Development of high efficiency gyrotron with depressed collector for ECH system

Sakamoto, Keishi; Tsuneoka, Masaki; Kasugai, Atsushi; Takahashi, Koji; Imai, Tsuyoshi; Kariya, Tsuyoshi*; Hayashi, Kenichi*; Mitsunaka, Yoshika*; Hirata, Yosuke*

Purazuma, Kaku Yugo Gakkai-Shi, 71(10), p.1029 - 1037, 1995/10

no abstracts in English

Journal Articles

Development of high power gyrotron with energy recovery system

Sakamoto, Keishi; Tsuneoka, Masaki; Kasugai, Atsushi; Takahashi, Koji; Maebara, Sunao; Imai, Tsuyoshi; Kariya, Tsuyoshi*; ; Hayashi, Kenichi*; Mitsunaka, Yoshika*; et al.

Fusion Technology 1994, 0, p.501 - 504, 1995/00

no abstracts in English

Journal Articles

Developmet of a high power and long pulse gyrotron with collector potential depression

Kasugai, Atsushi; Sakamoto, Keishi; Tsuneoka, Masaki; Takahashi, Koji; Maebara, Sunao; Imai, Tsuyoshi; Kariya, Tsuyoshi*; ; Hayashi, Kenichi*; Mitsunaka, Yoshika*; et al.

Int. Electron Devices Meeting 1994, 0, p.9.1.1 - 9.1.4, 1994/00

no abstracts in English

Oral presentation

Study of sub-terahertz high power gyrotron for ECH&CD system of DEMO

Sakamoto, Keishi; Kariya, Tsuyoshi*; Oda, Yasuhisa; Minami, Ryutaro*; Ikeda, Ryosuke; Kajiwara, Ken; Kobayashi, Takayuki; Takahashi, Koji; Moriyama, Shinichi; Imai, Tsuyoshi*

no journal, , 

Oral presentation

Development of the measurement technique for the 2D intensity distribution of a large-area ion beam using Gafchromic dosimetry films

Ishizaka, Tomohisa; Imai, Koji; Yuri, Yosuke; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu; Yoshida, Kenichi; Kurashima, Satoshi; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; et al.

no journal, , 

no abstracts in English

24 (Records 1-20 displayed on this page)