Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Toshiaki Tatsukawa"'
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 34:71-87
In this paper we present the main ideas and discuss both the feasibility and the conceptual design of a novel hybrid technique and equipment for an experimental cancer therapy based on the simultaneous and/or sequential application of two beams, name
Autor:
Tomohiro Kanemaki, M. Teranaka, T. Namba, Hitoshi Takashima, Fuminori Goda, Seishiro Watanabe, A. Doi, Toshiaki Tatsukawa, Toshitaka Idehara
Publikováno v:
International Journal of Infrared and Millimeter Waves. 26:591-606
Microwave invasion into living bodies through a millimeter wave catheter irradiation is described. As radiation sources for millimeter wave irradiation tests both Impatt oscillator (IO) and a Gunn oscillator were used. Irradiated samples are cow live
Autor:
Seiji Nishizawa, M. Teranaka, Toshitaka Idehara, Hitoshi Takashima, Toshiaki Tatsukawa, Fuminori Goda, T. Namba, A. Doi, Tomohiro Kanemaki
Publikováno v:
Japanese Journal of Applied Physics. 42:7147-7150
The development of a millimeter- and submillimeter-wave catheter for irradiation on living bodies using a Teflon rod dielectric antenna is described. The power sources of electromagnetic wave are an Impatt oscillator (90 GHz, 0.3 W) and a gyrotron (3
Autor:
Tomohiro Kanemaki, Seiji Nishizawa, Toshitaka Idehara, A. Doi, M. Teranaka, Hitoshi Takashima, Isamu Ogawa, Fuminori Goda, Toshiaki Tatsukawa
Publikováno v:
Japanese Journal of Applied Physics. 41:5486-5489
The development of a submillimeter wave catheter for irradiating on living bodies using a gyrotron as the radiation power source is described. The gyrotron FU-IV is optimized for development. The gyrotron is operated in the CW mode at a frequency of
Publikováno v:
Physics of Plasmas. 6:2613-2617
The rapid frequency step-switching between two nearby cyclotron fundamental modes achieved by switching beam energy is analyzed by a computer simulation and demonstrated experimentally. More dramatic frequency switching between a fundamental mode and
Autor:
Aripin, Toshitaka Idehara, K. Matsuda, Seitaro Mitsudo, Toshiaki Tatsukawa, T. Shirai, Tomohiro Kanemaki
Publikováno v:
International Journal of Infrared and Millimeter Waves. 20:1875-1888
Fine structure constant of ruby has been measured using an ESR spectrometer with a pulse magnetic for high fields and a gyrotron as a radiation source in a millimeter to submillimeter wave range. The measurement was carried out at room temperature. T
Publikováno v:
International Journal of Infrared and Millimeter Waves. 19:1607-1625
Amplitude modulation in submillimeter wave gyrotrons resulting from the modulation of the anode voltage of electron gun is studied in detail. Computer simulations for the nonlinear regime, where the modulation rate of the anode voltage is not proport
Autor:
Toshitaka Idehara, Isamu Ogawa, Toshiaki Tatsukawa, D. Wagner, N. Nishida, Kohki Yoshida, W. Kasparek, G. Gantenbein, Manfred Thumm
Publikováno v:
International Journal of Infrared and Millimeter Waves. 19:919-930
The cavity of the newest gyrotron, Gyrotron FU IVA in the high frequency series of Fukui University gyrotrons (the Gyrotron FU series) is designed to minimize the mode conversion from the main cavity mode to the higher modes. In this paper, the exper
Autor:
M. Pereyaslavets, K. Shibutani, Kohki Yoshida, H. Nojima, Toshitaka Idehara, Isamu Ogawa, Toshiaki Tatsukawa
Publikováno v:
International Journal of Infrared and Millimeter Waves. 19:1303-1316
Electron beam misalignment in a submillimeter-wave gyrotron strongly affects its total efficiency as well as excitation of rotating and counterrotating modes. Some of misalignment phenomena were studied theoretically and experimentally.
Publikováno v:
International Journal of Infrared and Millimeter Waves. 19:803-816
Higher harmonic operation of gyrotrons is necessary to obtain high frequencies. Some gyrotrons included in the Gyrotron FU series developed at Fukui University have achieved operation at the third and even fourth harmonics of the electron cyclotron f