Zobrazeno 1 - 10
of 3 098
pro vyhledávání: '"Sakagami H"'
Publikováno v:
EPJ Web of Conferences, Vol 59, p 03008 (2013)
In a fast ignition scheme using a cone-guided target, the fusion target is imploded with the inserted cone. Due to the existence of the cone, asymmetric implosion is not avoidable, which has the possibility to degrade fuel compression efficiency. Thi
Externí odkaz:
https://doaj.org/article/9f9a62161f864ba693064a9e362aee47
Publikováno v:
EPJ Web of Conferences, Vol 59, p 03010 (2013)
In cone-guiding fast ignition, the guiding of fast electron beam with significantly large beam divergence is one of the most important issues for achieving efficient core heating. We proposed two guiding schemes; one is the “Tongari” tip guiding
Externí odkaz:
https://doaj.org/article/e7edb6618ab34664ba3a1f2291a4c28e
Publikováno v:
EPJ Web of Conferences, Vol 59, p 03007 (2013)
In the implosion phase of the fast ignition scheme, most critical issues are breakup of the cone tip and the formation of high ρ-R core plasma to improve its heating efficiency. For the integrated fast ignition experiment at ILE Osaka University, ro
Externí odkaz:
https://doaj.org/article/86c26437668a4791b8a373e27590384e
Publikováno v:
EPJ Web of Conferences, Vol 59, p 17016 (2013)
Quasi-static magnetic fields, which are induced by the Weibel instability and grow to more than hundred Megagauss, lead to large divergence angle of fast electrons, hence lower energy coupling. To suppress the divergence, two different structures, na
Externí odkaz:
https://doaj.org/article/088c3affe40f4fcda852eaa74f243a45
Autor:
Shiraga H., Fujioka S., Nakai M., Watari T., Nakamura H., Arikawa Y., Hosoda H., Nagai T., Koga M., Kikuchi H., Ishii Y., Sogo T., Shigemori K., Nishimura H., Zhang Z., Tanabe M., Ohira S., Fujii Y., Namimoto T., Sakawa Y., Maegawa O., Ozaki T., Tanaka K.A., Habara H., Iwawaki T., Shimada K., Key M., Norreys P., Pasley J., Nagatomo H., Johzaki T., Sunahara A., Murakami M., Sakagami H., Taguchi T., Norimatsu T., Homma H., Fujimoto Y., Iwamoto A., Miyanaga N., Kawanaka J., Kanabe T., Jitsuno T., Nakata Y., Tsubakimoto K., Sueda K., Kodama R., Kondo K., Morio N., Matsuo S., Kawasaki T., Sawai K., Tsuji K., Murakami H., Sarukura N., Shimizu T., Mima K., Azechi H.
Publikováno v:
EPJ Web of Conferences, Vol 59, p 01008 (2013)
The FIREX-1 project, the goal of which is to demonstrate fuel heating up to 5 keV by fast ignition scheme, has been carried out since 2003 including construction and tuning of LFEX laser and integrated experiments. Implosion and heating experiment of
Externí odkaz:
https://doaj.org/article/b9a0941657f543f481eeb4740ed73eff
Autor:
Iwamoto A., Fujimura T., Nakai M., Norimatsu T., Shiraga H., Azechi H., Fujimoto Y., Machi S., Sakagami H.
Publikováno v:
EPJ Web of Conferences, Vol 59, p 12002 (2013)
The collaboration research of ILE and NIFS has made progress on the FIREX target developments. We have two fuel layering strategies: a foam shell method and a conical laser guide heating technique. To date, preliminary and principle demonstration sta
Externí odkaz:
https://doaj.org/article/97146be45da046599661bf0e07a93802
Publikováno v:
EPJ Web of Conferences, Vol 59, p 17004 (2013)
2D PIC simulations for fast ignition with a planar target and an ultrahigh intensity laser have been performed to investigate effects of laser temporal profile on fast electron characteristics. Six different laser profiles, which are combination of t
Externí odkaz:
https://doaj.org/article/8e9a8f1f18764a2fa104f6719a5c8b10
Autor:
Yogo, A., Mima, K., Iwata, N., Tosaki, S., Morace, A., Arikawa, Y., Fujioka, S., Nishimura, H., Sagisaka, A., Johzaki, T., Matsuo, K., Kamitsukasa, N., Kojima, S., Nagatomo, H., Nakai, M., Shiraga, H., Murakami, M., Tokita, S., Kawanaka, J., Miyanaga, N., Yamanoi, K., Norimatsu, T., Sakagami, H., Bulanov, S. V., Kondo, K., Azechi, H.
Using a kilojoule class laser, we demonstrate for the first time that high-contrast picosecond pulses are advantageous for ion acceleration. We show that a laser pulse with optimum duration and a large focal spot accelerates electrons beyond the pond
Externí odkaz:
http://arxiv.org/abs/1608.00341
Autor:
Johzaki, T., Taguchi, T., Sentoku, Y., Sunahara, A., Nagatomo, H., Sakagami, H., Mima, K., Fujioka, S., Shiraga, H.
For enhancing the core heating efficiency in electron-driven fast ignition, we proposed the fast electron beam guiding using externally applied longitudinal magnetic fields. Based on the PIC simulations for the FIREX-class experiments, we demonstrate
Externí odkaz:
http://arxiv.org/abs/1412.6222
Publikováno v:
Journal of Anatomy; Jun2024, Vol. 244 Issue 6, p1030-1039, 10p