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  2. 綱脇 惠章

綱脇 惠章

ツナワキ ヨシアキ  (Yoshiaki Tsunawaki)

基本情報

所属
大阪産業大学 工学部 電子情報通信工学科 名誉教授
関西大学 先端科学技術推進機構 非常勤研究員
学位
工学博士(大阪大学)
J-GLOBAL ID
200901048491348799
researchmap会員ID
1000107904

研究キーワード

 6

経歴

 4

学歴

 4

委員歴

 9
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論文

 57
  • 浅川 誠, 山口聡一朗, 草場光博, 綱脇惠章
    電気学会論文誌 A134(1) 22-25 2014年1月  査読有り
  • K.Sakamoto, T.Nomoto, S.Yamaguchi, I.Fujihara, K.Satoh, J.Ichihara, T.Kimura, Y.Tsunawaki
    J.Ceramic Soc.Jpn. 121(8) 714-722 2013年  査読有り
  • D.Li, M.Hangyo, Z.Yang, Y.Tsunawaki, Y.Wei, Y.Wang, S.Miyamoto, M.R.Asakawa, K.Imasaki
    Terahertz Sci. Tech. 6(3) 189-205 2013年  査読有り
  • D.Li, M.Hangyo, Y.Tsunawaki, Z.Yang, Y.Wei, S.Miyamoto, M.R.Asakawa, K.Imasaki
    Nucl.Instr.Meth A674 20-23 2012年  査読有り
  • Y.Tsunawaki, N.Ohigashi, M.R.Asakawa
    Jpn.J.Appl.Phys. 51 028002-1-~2 2012年  査読有り
  • D.Li, M.Hangyo, Y.Tsunawaki, Z.Yang, Y.Wei, S.Miyamoto, M.R.Asakawa, K.Imasaki
    Appl.Phys.Lett. 100 191101-1-~2 2012年  査読有り
  • 綱脇惠章, 堀内敏行, 廣本宣久
    電気学会論文誌 A132(1) 17-20 2012年1月  
  • D. Li, M. Hangyo, Z. Yang, M. R. Asakawa, S. Miyamoto, Y. Tsunawaki, K. Takano, K. Imasaki
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 637(1) 135-137 2011年5月  査読有り
    Smith-Purcell radiation from an electric line charge that moves, at constant speed, parallel to a grating made of metamaterial with negative index is analyzed. Through theoretical analysis and computations, we show that the Smith-Purcell radiation is stronger from a grating of negative-index material, than that from a positive-index material and perfect conductor. Also, we found that the radiation strongly depends on the values of permeability and permittivity. Calculations on grating with saw-like profile and rectangular profile are also carried out and demonstrated. (C) 2011 Elsevier B.V. All rights reserved.
  • D. Li, Z. Yang, Y. Tsunawaki, M. R. Asakawa, M. Hangyo, S. Miyamoto, K. Imasaki
    APPLIED PHYSICS LETTERS 98(21) 211503-1-~3 2011年5月  査読有り
    Grating with Bragg reflectors for the Smith-Purcell free-electron laser is proposed to improve the reflection coefficient, resulting in enhancing the interaction of the surface wave with the electron beam and, consequently, relax the requirements to the electron beam. With the help of particle-in-cell simulations, it has been shown that the usage of Bragg reflectors may improve the growth rate, shorten the time for the device to reach saturation, and lower the start current for the operation of a Smith-Purcell free-electron laser. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3594243]
  • K.Sakamoto, S.Yamaguchi, I.Fujihara, K.Satoh, Y.Tsunawaki
    Phosphorous Res.Bull. 25 64-67 2011年  査読有り
    Hardening of β-tricalcium phosphate (β-TCP) mixed with a 2.5wt% Na2HPO4 aqueous solution was investigated by a compressive strength test, XRD, SEM, and calorimetry. The β-TCP starting material was ground using a mortar grinder for 7, 24, and 72 h in an air atmosphere. Compressive strength for β-TCP cement ground for 24 h was stronger than that ground for 7 h and 72 h, and was 42.8±4.1 MPa after soaking in saline for 7 days. It was found that β-TCP requires rapid hydrolysis to harden β-TCP cement. The Na2HPO4 aqueous solution facilitates this hydrolysis reaction. The compressive strength of β-TCP cement depends on the length and the number of acicular apatite crystals deposited from β-TCP.
  • 坂本清子, 綱脇惠章
    日本赤外線学会誌 20(2) 25-34 2011年  査読有り
  • D. Li, Z. Shi, Z. Yang, M. R. Asakawa, G. Huo, Y. Tsunawaki, K. Imasaki
    JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES 31(11) 1271-1277 2010年11月  査読有り
    A two-section grating system for Smith-Purcell free-electron lasers is investigated. The system is composed of two open gratings with different geometrical parameters. It is expected that the originally continuous electron beam is bunched in the first section by interaction with the evanescent wave near the grating surface, and enhanced radiation can be extracted at the second section in the form of super-radiant Smith-Purcell radiation at a designed angle. With the help of particle-in-cell simulation, the electron beam bunching and directed output of the fundamental radiation and higher order harmonics are demonstrated.
  • 綱脇惠章, 浅川 誠
    日本赤外線学会誌 17(2) 13-24 2008年  査読有り
  • 綱脇惠章, 草場光博, 浅川 誠
    日本赤外線学会誌 16(2) 76-85 2007年  査読有り
  • 草場光博, 綱脇惠章
    レーザー学会誌 33(1) 47-51 2005年1月  査読有り
  • 大東延久, 綱脇惠章
    電気学会論文誌 A123(10) 968-975 2003年10月  査読有り
  • 浅川 誠, 綱脇惠章
    日本赤外線学会誌 12(1) 8-11 2002年  査読有り
  • 綱脇惠章, 奥田喜彦, 大東延久, 草場光博, 今崎一夫, 藤田雅之, 三間圀興, 中井貞雄
    レーザー研究 28(9) 609-612 2000年9月  査読有り
    A test hybrid helical microwiggler with 4 poles per period has been designed and developed with parameters such as period of 10 mm, gap diameter of 5 mm and periodical number of 10. One period of its wiggler is constructed with four segments. Each of them has a thickness of 2.5 mm and consists of pentagonal permanent magnets and permendurs as ferromagnets. Each segment is stacked along wiggler axis rotating byangle of 90°C It is so small that the outer width is 72 mm. The measured peak field is 0.35 to 0.4 T depending on the gap space of 5.2 to 4.8 mm.
  • 今崎一夫, 中尾直也, 後藤道夫, 文雅司, 大東延久, 綱脇惠章, 三間圀興, 中井貞雄, 山中千代衛
    レーザー研究 28(6) 370-373 2000年6月  査読有り
  • 文 雅司, 藤田雅之, 中尾直也, 今崎一夫, 大東延久, 綱脇惠章, 中井貞雄, 山中千代衛
    レーザー研究 26(9) 696-699 1998年9月  査読有り
    We have investigated the Compton scattering of an intense laser beam confined to the supercavity for a highenergy and high-bright photon source. To generate the scattered photons in high efficiency, it is necessary to collide high-density electrons with high-density photons. Therefore, the laser light and the electron beam should be focused as small as possible to get intense radiation. But the focused laser beam and electron beam cannot overlap with each other completely. Here we describe a method for an electron beam and laser beam to interact under optimal conditions in a realistic case. Using this method, we can estimate the flux of γ-ray 1012 photons/sec for a conventional laser with a supercavity and typical electron storage ring.
  • 登倉香子, 綱脇惠章, 草場光博, 大東延久, 藤田雅之, 今崎一夫, 三間圀興
    レーザー研究 26(5) 390-394 1998年5月  査読有り
    We have started to develop a tungsten (W) field emission cathode for Cherenkov free electron laser (FEL) or Smith-Percell FEL. In this work, elementary properties of electron beam current from W tip have been investigated by numerical simulation and experiment using a system consisting of W tip, 1 st- and 2nd- gate, and anode. When there was no 2nd gate, the current increased up to-20μA with the absolute voltage of cathode according to the Fowler-Nordheim equation. The addition of 2nd gate decreased the current half to 5th lower than expected value from the simulation. However, it focused and enlarged the current of the electron beam in a certain voltage range of 2nd gate. These phenomena agreed qualitatively with those of the simulation. In further study, improved experiment will be made to get higher current and parallel smaller size of an electron beam.
  • 綱脇惠章, 野口美枝, 大東延久, 藤田雅之, 今崎一夫, 三間圀興
    レーザー研究 26(5) 386-389 1998年5月  査読有り
    In order to get a short wavelength free electron laser (FEL), higher harmonic gain has been analyzed for an FEL using a hybrid planar wiggler with a period of 20 mm. This type wiggler consisting of ferromagnetics and permanent magnets is most convenient and gives the strong field including some higher harmonic components by selecting proper sizes of these magnetic materials. A certain modification of magnetic field distribution is accomplished by small gap length of the wiggler and small width of permendur as a ferromagnet. Gain analysis of FEL shows that higher harmonic gains exceed that of the fundamental for a very high magnetic field and suggests that for high wiggler field of K>1-1.6, higher harmonic gains are improved primarily dUe to its strong field and for low wiggler field of K<1-1.6, gain improvements are mainly due to the modification of the wiggler field distribution.
  • 大東延久, 綱脇惠章, 藤田雅之, 今崎一夫, 三間圀興
    レーザー研究 26(5) 379-385 1998年5月  査読有り
    Magnetic field of a core type wiggler becomes obviously weaker with the decrease of its period due to increasing leakage field. Comparison of a core type helical wiggler with a planar wiggler suggests that the former has leakage field much smaller than the latter wiggler . It urged for us to develop two kinds of helical microwiggler aimed at following two points: (A) the period as short as possible, and (B) the structure ascompact as possible. The former was realized by three poles per period type electromagnetic structure . A peak field of 3.0 kG on axis was achieved with a period of 7.9 mm and gap length of 4.6 mm. The latter was studied by numerical simulation and a helical microwiggler with four poles per period was designed . It will give a wiggler field of 3.7 kG for the period of 10 mm and the gap length of 5 mm. If it is assumed that the K parameter of a wiggler needs 0.2 for FEL oscillation, its period becomes 8 mm for gap length of 5 mm or gap length is enlarged to 7 mm for the period of 10 mm.
  • 文 雅司, 藤田雅之, 中尾直也, 今崎一夫, 大東延久, 綱脇惠章, 三間圀興, 中井貞雄, 山中千代衛
    日本赤外線学会誌 8(2) 114-120 1998年  査読有り
  • 草場光博, 上東直也, 綱脇惠章, 山中正宣, 和田一洋
    日本赤外線学会誌 8(1) 45-52 1998年  査読有り
  • 綱脇惠章
    日本赤外線学会誌 7(1) 34-44 1997年  査読有り
  • 綱脇惠章, 氏家貴生, 草場光博, 山中正宣, 和田一洋
    レーザー研究 23(8) 684-689 1995年8月  査読有り
  • 浅川 誠, 酒本直樹, 井上尚樹, 江崎伸也, 山本達也, 陳 基忠, 藤田雅之, 今崎一夫, 大東延久, 綱脇惠章, 中井貞雄, 山中千代衛
    レーザー研究 21(7) 746-753 1993年7月  査読有り
    The free-electron-laser experiment in the milli-meter-range by the coherent radiation emitted from an electron bunch is reported. With a 7MeV rf-linac, the spontaneous emission of 20W has been observed. The oscillation experiment has been performed by superimposing this radiation in the resonator. Power of 16W was observed at wavelength of 2.73mm.
  • 綱脇惠章, 大東延久
    日本赤外線学会誌 2(1) 34-55 1992年  査読有り
  • 大東延久, 三間圀興, 大井克洋, 車信一郎, 綱脇惠章, 田口俊弘, 秋葉龍郎, 今崎一夫, 山中千代衛, 中井貞雄
    レーザー研究 18(10) 823-833 1990年10月  査読有り
  • 坂本 清子, 綱脇 恵章, 津波古 充朝, 田中 和男, 小林 正光
    日本化学会誌 (4) 363-369 1990年  査読有り
  • 市川 洋, 綱脇惠章, 岡島茂樹, 高井正弘, 岩崎敏勝, 山中正宣, 三石明善, 山中龍彦, 山中千代衛
    レーザー研究 14(2) 117-128 1986年  査読有り
  • 市川 洋, 綱脇惠章, 山中正宣, 山中龍彦
    レーザー研究 13(10) 823-827 1985年10月  査読有り
  • Y ICHIKAWA, Y TSUNAWAKI, M YAMANAKA, T YAMANAKA, A MITSUISHI, C YAMANAKA
    INFRARED PHYSICS 25(4) 633-640 1985年  査読有り
  • 綱脇惠章, 市川 洋, 山中正宣
    レーザー研究 12(10) 557-567 1984年10月  査読有り
  • 三石明善, 水野皓司, 綱脇惠章, 山中正宣, 阪井清美
    赤外線技術 (9) 2-14 1984年  
  • Tsunawaki Yoshiaki, 山中 正宣
    レーザー研究 11(7) 509-513 1983年7月  査読有り
    A portable optically pumped far-infrared (FIR) waveguide laser having a modified Chang-type output coupling is constructed and its characteristics are studied by using a CH2F2lasant. The new output coupling is designed so that lasing wavelength from 10 μ m to a few millimeters can be observed. Reproducible and stable FIR laser output is observed, although the tuning curve is very complex due to the low-loss multimode oscillation.
  • 綱脇惠章, 大野英雄, 勝田博司, 古川和男
    日本化学会誌 (6) 956-860 1982年  査読有り
  • Y TSUNAWAKI, M YAMANAKA, M KOBAYASHI, S FUJITA
    INFRARED PHYSICS 22(4) 229-236 1982年  査読有り
  • 綱脇惠章, 長坂啓吾, 山中正宣
    赤外線技術 No.7 19-31 (1982). (7) 19-31 1982年  査読有り招待有り
  • 綱脇惠章, 山中正宣
    高温学会誌 8(2) 59-66 (1982). 8(2) 59-66 1982年  査読有り
  • 綱脇恵章, 山中正宣, 近 璋三
    レーザー研究 10(1) 78-125 1982年1月  
  • Y TSUNAWAKI, N IWAMOTO, T HATTORI, A MITSUISHI
    JOURNAL OF NON-CRYSTALLINE SOLIDS 44(2-3) 369-378 1981年  査読有り
  • 西沢章光, 野田信彦, 藤田順治, 山中正宣, 武田佳宏, 岡島茂樹, 牧野真吾, 長坂啓吾, 小泉俊郎
    核融合研究 45(5) 476-498 1981年  査読有り
    A beat-modulated 118.8-μ m CH3OH laser interferometer system has been constructed and successfully operated for the electron density measurement of JIPP T-II plasma. A Michelson-type far-infrared (FIR) laser interferometer system with a corner-cube reflector has been adopted in order to compensate the mechanical vibration component of the system by means of a 632.8-nm He-Ne laser interferometer. The corner-cube reflector is directly attached to the JIPP T-II vacuum vessel because of simplicity of the interferometer system. It has been observed that the vibration component of the FIR laser interferometer is compensated completely and the electron density by the system agrees closely with the one by a 2-mm microwave interferometer system. The signal-to-noise ratios of the probe- and reference signals are 50 and 250, respectively. The minimum detectable line-averaged density of present system is 8 × 1011 cm-3 (that is, 1/40 fringes).
  • N UMESAKI, N IWAMOTO, Y TSUNAWAKI, H OHNO, K FURUKAWA
    JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I 77 169-175 1981年  査読有り
  • M YAMANAKA, Y TAKEDA, S TANIGAWA, A NISHIZAWA, N NODA, J FUJITA, M TAKAI, M SHIMOBAYASHI, Y HAYASHI, T KOIZUMI, K NAGASAKA, S OKAJIMA, Y TSUNAWAKI, A NAGASHIMA
    INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES 1(1) 57-76 1980年  査読有り
  • 岩本信也, 綱脇惠章, 宮後 誠, 日本金属学会誌
    日本金属学会誌 43(12) 1138-1144 1979年12月  査読有り
  • N.Iwamoto, Y.Tsunawaki, N.Umesaki, H.Ohno, K.Furukawa
    J.Chem.Soc.FaradayTrans.II 75 1277-1283 1979年  査読有り
  • N.Iwamoto, Y.Tsunawaki, T.Hattori, A.Mitsuishi
    Phys.Chem.Glasses 19(6) 141-143 1978年  査読有り
  • N.Iwamoto, Y.Tsunawaki, H.Nakagawa, T.Yoshimura, N.Wakabayashi
    J.Non-Cryst.Solids 29(3) 347-356 1978年  査読有り

MISC

 254
  • Proc. of 3rd Int Work. on Far Infrared Technologies 5 2010年  
  • 綱脇恵章e, al
    電気学会研究会 LAV-10-024 2010年  
  • 電気学会研究会 LAV-10-003 2010年  
  • Proc. of 3rd Int Work. on Far Infrared Technologies 5 2010年  
  • Nobuhisa Ohigashi, Yoshiaki Tsunawaki, Makoto R. Asakawa
    JAPANESE JOURNAL OF APPLIED PHYSICS 48(11) 114504-1～8 2009年11月  
    An adiabatic transition field in a solenoid-induced helical wiggler has been successfully generated using staggered Ni plates with different thicknesses of 6 to 0.1 mm. However, trials using Fe plates instead of Ni plates failed to generate a suitable adiabatic transition field To elucidate these phenomena, the magnetic behavior of Ni and Fe plates with regard to the thickness dependence was studied by a fundamental electromagnetic calculation with the aid of a field calculation based on the finite element method The magnetic flux density of a Ni plate increases and then decreases with the reduction in thickness from 6 to 0.8 mm and from 0 8 to 0 1 mm, respectively On the other hand. the magnetic flux density of an Fe plate does not have a maximum but monotonically increases until the smallest thickness of 0.1 mm. The dependence of magnetic flux density on thickness differs between Ni and Fe plates This difference explains the necessity of using a Ni plate for the adiabatic transition part of the wiggler. Furthermore, we estimated three types of demagnetizing factor depending on the thickness of the plate. (C) 2009 The Japan Society of Applied Physics
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 2

Works(作品等)

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