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18 results on '"Kodama, Ryousuke"'

3. Core size effects of laser fusion subcritical research reactor for fusion engineering research

Author

Iwamoto, Akifumi, Kodama, Ryousuke, Iwamoto, Akifumi, and Kodama, Ryousuke

Abstract

A multi-purpose high repetition laser facility, the so-called Japan establishment for power-laser community harvest (J-EPoCH) is proposed as a next generation laser facility. J-EPoCH will operate at the maximum rate of 100 Hz. The omnidirectional 12 laser beams with 8 kJ would yield ∼1013 neutrons with a large high aspect ratio target. As one of the applications of J-EPoCH, a laser fusion subcritical research reactor has been conceptually designed based on existing technologies. Moreover, a variety of fusion engineering studies: energy conversion, tritium breeding, neutron irradiation effects, etc, can be conducted. The feasibility of the subcritical research reactor is considered in terms of neutron-thermal (n-t) conversion and tritium breeding. Lead–lithium alloy (Li17Pb83) and boron carbide (B4C) have the potential to be studied for preliminary fusion power generation. The subcritical reactor will generate 21.4 W and 20.0 W of the thermal fusion power with the Li17Pb83 and the B4C layers of the thickness of 80 cm, respectively at 1 Hz operation. The Li17Pb83 layer of a 5 mm thickness will achieve the temperature rise of 0.203 mK per shot. The thermal fusion energy is detectable with conventional measurement techniques. The core with the Li17Pb83 layer thickness of 100 cm will yield more than one tritium from a deuterium–tritium fusion neutron. However, laser windows reduce the efficiency of n-t conversion and tritium yield., ** After this version, the author still has made a few minor corrections., source:Citation A. Iwamoto and R. Kodama 2021 Nucl. Fusion 61 116075, source:https://doi.org/10.1088/1741-4326/ac2992

Published
2021

4. レーザープラズマ加速器の進展とその可能性

Author

Kodama, Ryousuke, Hosokai, Tomonao, Nishiuchi, Mamiko, and Hayakawa, Takehito

Abstract

レーザープラズマによる粒子加速は、パワーレーザーの短パルス超高強度化技術や 繰り返し動作技術などの急速な進展に伴い、世界中で「可能性の技術」から「使える技術」にパラダイムがシフトしようとしています。光源の短パルス性や小さな光源の特性とともに超小型で自由度のあるシステムという特徴があり、学術研究から産業応用にわたる幅広い展開が期待されています。

Published
2020

5. Alignment of solid targets under extreme tight focus conditions generated by an ellipsoidal plasma mirror

Author

Kumar, Deepak, primary, Šmíd, Michal, additional, Singh, Sushil, additional, Soloviev, Alexander, additional, Bohlin, Hannes, additional, Burdonov, Konstantin, additional, Fente, Gashaw, additional, Kotov, Alexander, additional, Lancia, Livia, additional, Lédl, Vit, additional, Makarov, Sergey, additional, Morrissey, Michael, additional, Perevalov, Sergey, additional, Romanovsky, Denis, additional, Pikuz, Sergey, additional, Kodama, Ryousuke, additional, Neely, David, additional, McKenna, Paul, additional, Laštovička, Tomáš, additional, Starodubtsev, Mikhail, additional, Weber, Stefan, additional, Nakatsutsumi, Motoaki, additional, and Fuchs, Julien, additional

Published
2019
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9. Relativistic plasma shutter for ultraintense laser pulses

Author

Reed, Stephen A., primary, Matsuoka, Takeshi, additional, Bulanov, Stepan, additional, Tampo, Motonobu, additional, Chvykov, Vladimir, additional, Kalintchenko, Galina, additional, Rousseau, Pascal, additional, Yanovsky, Victor, additional, Kodama, Ryousuke, additional, Litzenberg, Dale W., additional, Krushelnick, Karl, additional, and Maksimchuk, Anatoly, additional

Published
2009
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16. Use of imaging plates at near saturation for high energy density particles

Author

Tanimoto, Tsuyoshi, Ohta, Kazuhide, Habara, Hideaki, Yabuuchi, Toshinori, Kodama, Ryousuke, Tampo, Motonobu, Zheng, Jian, Tanaka, Kazuo A., Tanimoto, Tsuyoshi, Ohta, Kazuhide, Habara, Hideaki, Yabuuchi, Toshinori, Kodama, Ryousuke, Tampo, Motonobu, Zheng, Jian, and Tanaka, Kazuo A.

Abstract

Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Review of Scientific Instruments, 79(10), 10E910, 2008 and may be found at http://dx.doi.org/10.1063/1.2987679

17. Use of imaging plates at near saturation for high energy density particles

Author

Tanimoto, Tsuyoshi, Ohta, Kazuhide, Habara, Hideaki, Yabuuchi, Toshinori, Kodama, Ryousuke, Tampo, Motonobu, Zheng, Jian, Tanaka, Kazuo A., Tanimoto, Tsuyoshi, Ohta, Kazuhide, Habara, Hideaki, Yabuuchi, Toshinori, Kodama, Ryousuke, Tampo, Motonobu, Zheng, Jian, and Tanaka, Kazuo A.

Abstract

Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Review of Scientific Instruments, 79(10), 10E910, 2008 and may be found at http://dx.doi.org/10.1063/1.2987679

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