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Oue, Daigo*; Matsuo, Mamoru
Physical Review A, 106(4), p.L041501_1 - L041501_7, 2022/10
Times Cited Count：2 Percentile：42.78(Optics)Ida, Masato
Nihon Ryutai Rikigakkai Nenkai 2005 Koen Rombunshu (CD-ROM), 6 Pages, 2005/09
The resonance frequencies and oscillation phases of three acoustically coupled bubbles in a fluid are examined to show that avoided crossings can appear in a few-bubble system. Using a simple coupled oscillator model, we show that if at least three bubbles exist, it is possible for their resonance frequencies as functions of the separation distances between the bubbles to experience an avoided crossing. Furthermore, by focusing our attention on the oscillation phases and the transition frequencies [Ida, Phys. Lett. A 297, 210 (2002); J. Phys. Soc. Jpn. 71, 1214 (2002)] of the coupled bubbles, we show that a distinct state exchange takes place between the bubbles at a point in the avoided crossing region, where a resonance frequency of the triple-bubble system crosses with a transition frequency not corresponding to the resonance frequencies.
Ida, Masato
Physical Review E, 72(3), p.036306_1 - 036306_7, 2005/09
Times Cited Count：14 Percentile：54.05(Physics, Fluids & Plasmas)The resonance frequencies and oscillation phases of three acoustically coupled bubbles are examined to show that avoided crossings can appear in a multibubble system. Via a simple coupled oscillator model, we show that if at least three bubbles exist, it is possible for their resonance frequencies to experience an avoided crossing. Furthermore, by focusing our attention on the oscillation phases and based on analysis of the transition frequencies [Ida, Phys. Lett. A 297, 210 (2002); Ida, J. Phys. Soc. Jpn. 71, 1214 (2002)] of the coupled bubbles, we show that a distinct state exchange takes place between the bubbles at a point in the avoided crossing region, where a resonance frequency of the triple-bubble system crosses with a transition frequency.
Ida, Masato
Physics of Fluids, 17(9), p.097107_1 - 097107_13, 2005/09
Times Cited Count：16 Percentile：52.83(Mechanics)The transition frequencies of multibubble systems in a sound field are reexamined theoretically to confirm their existence and further clarify their physical properties. Via a forced coupled oscillator model, the following results are obtained: (1) further details of the characteristics of the transition frequencies, (2) the theoretical determination of the threshold distances for the appearance of the sub-transition frequencies, (3) a simple understanding of the sign reversal of the interaction force, and (4) the clarification of several similarities and differences among the natural, resonance, and transition frequencies in double-bubble cases. The present effort enforces our claim that transition frequencies causing no resonance response exist in multibubble systems and thoroughly clarifies the physical effects of the transition frequencies and their roles in the sign reversal of the interaction force.
Nagai, Ryoji; Hajima, Ryoichi; Sawamura, Masaru; Kikuzawa, Nobuhiro; Nishimori, Nobuyuki; Nishitani, Tomohiro; Minehara, Eisuke
Proceedings of 1st Annual Meeting of Particle Accelerator Society of Japan and 29th Linear Accelerator Meeting in Japan, p.656 - 658, 2004/08
no abstracts in English
Matsukawa, Makoto; Miura, Yushi; Shimada, Katsuhiro; Terakado, Tsunehisa; Okano, Jun; Isono, Takaaki; Nunoya, Yoshihiko
IEEE Transactions on Applied Superconductivity, 14(2), p.1414 - 1417, 2004/06
Times Cited Count：5 Percentile：32.92(Engineering, Electrical & Electronic)no abstracts in English
Maebara, Sunao; Morishita, Takatoshi; Moriyama, Shinichi; Sugimoto, Masayoshi; Imai, Tsuyoshi; Takeuchi, Hiroshi
Proceedings of 28th Linear Accelerator Meeting in Japan, P. 378, 2003/08
no abstracts in English
Nagai, Ryoji; Hajima, Ryoichi; Sawamura, Masaru; Nishimori, Nobuyuki; Kikuzawa, Nobuhiro; Minehara, Eisuke
Proceedings of 28th Linear Accelerator Meeting in Japan, p.381 - 383, 2003/08
no abstracts in English
Hori, Toshihiko*; Ito, Takashi; Yamazaki, Masayoshi*; Chishiro, Etsuji; Hasegawa, Kazuo
Proceedings of 28th Linear Accelerator Meeting in Japan, p.285 - 287, 2003/07
no abstracts in English
Kurashima, Satoshi; Fukuda, Mitsuhiro; Miyawaki, Nobumasa; Okumura, Susumu; Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Yoshida, Kenichi; Nakamura, Yoshiteru; Arakawa, Kazuo
Dai-14-Kai Kasokuki Kagaku Kenkyu Happyokai Hokokushu, p.359 - 361, 2003/00
no abstracts in English
Ishida, Toshihisa; Yoritsune, Tsutomu
Nuclear Engineering and Design, 215(1-2), p.51 - 67, 2002/06
Times Cited Count：112 Percentile：98.41(Nuclear Science & Technology)no abstracts in English
Okada, Kenichi*; Tsuneoka, Masaki; Murano, Yoshihiro*; Okawa, Yoshinao
Denki Setsubi Gakkai-Shi, 22(2), p.151 - 158, 2002/02
no abstracts in English
Koseki, Shoichiro*; Watanabe, Yasuhiro; Zhang, F.; Tani, Norio
Heisei-14-Nen Denki Gakkai Zenkoku Taikai Koen Rombunshu, p.6 - 7, 2002/00
High Intensity Proton Accelerator Facility is under design. 3 GeV proton synchrotron is one of its facility. It has about ten families of magnets. Resonant type power supplies are adopted to excite their magnet families at 25 Hz. Magnetic field of each magnet family has to track each other at high precision of 1E-4. In this paper current control of power supply is studied. Phase angle of current is affected by variations of capacitance of resonant capacitors caused by temperature. A correction of current reference is necessary realize the performance.
Nagai, Ryoji; Hajima, Ryoichi; Nishimori, Nobuyuki; Sawamura, Masaru; Kikuzawa, Nobuhiro; Shizuma, Toshiyuki; Minehara, Eisuke
Nuclear Instruments and Methods in Physics Research A, 475(1-3), p.519 - 523, 2001/12
Times Cited Count：5 Percentile：38.97(Instruments & Instrumentation)no abstracts in English
Kurashima, Satoshi; Miyawaki, Nobumasa; Fukuda, Mitsuhiro; Nakamura, Yoshiteru; Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Yokota, Wataru; Okumura, Susumu; Arakawa, Kazuo
Proceedings of 13th Symposium on Accelerator Science and Technology, p.232 - 234, 2001/10
no abstracts in English
Koseki, Shoichiro*; Zhang, F.; Watanabe, Yasuhiro; Tani, Norio; Adachi, Toshikazu*; Someya, Hirohiko*
Heisei-13-Nen Denki Gakkai Sangyo Oyo Bumon Zenkoku Taikai Koen Rombunshu, 1, p.253 - 256, 2001/08
no abstracts in English
Watanabe, Yasuhiro; Zhang, F.; Koseki, Shoichiro*; Tani, Norio; Adachi, Toshikazu*; Someya, Hirohiko*
Heisei-13-Nen Denki Gakkai Sangyo Oyo Bumon Zenkoku Taikai Koen Rombunshu, 2, p.761 - 762, 2001/08
no abstracts in English
Chishiro, Etsuji; Tsukishima, Chihiro*; Ouchi, Nobuo; Mukugi, Ken*; Hasegawa, Kazuo; Mizumoto, Motoharu
KEK Proceedings 2000-23, p.34 - 38, 2001/02
no abstracts in English
Nagai, Ryoji; Hajima, Ryoichi; Nishimori, Nobuyuki; Sawamura, Masaru; Kikuzawa, Nobuhiro; Shizuma, Toshiyuki; Minehara, Eisuke
Journal of Nuclear Science and Technology, 38(1), p.15 - 18, 2001/01
no abstracts in English
Kurashima, Satoshi; Fukuda, Mitsuhiro; Nakamura, Yoshiteru; Nara, Takayuki; Agematsu, Takashi; Ishibori, Ikuo; Tamura, Hiroyuki; Yokota, Wataru; Okumura, Susumu; Arakawa, Kazuo; et al.
AIP Conference Proceedings 600, p.303 - 305, 2001/00
A flat-top acceleration system for the JAERI AVF cyclotron has been designed. The fifth harmonic of the fundamental frequency is used to obtain uniform energy gain. To determine optimum parameters of the flat-top system, a cold model test was carried out and flat-top waveforms of the voltages were observed successfully in the whole range of the fundamental frequency. An rf power required for generating a flat-top dee voltage of 30 kV was estimated to be about 1 kW. The design of the flat-top cavity is being modified using the MAFIA code.
