Zobrazeno 1 - 10
of 1 451
pro vyhledávání: '"Sakawa Y"'
Autor:
Sakawa, Y., Ishihara, H., Ryazantsev, S. N., Alkhimova, M. A., Kumar, R., Kuramoto, O., Matsumoto, Y., Ota, M., Egashira, S., Nakagawa, Y., Minami, T., Sakai, K., Taguchi, T., Habara, H., Kuramitsu, Y., Morace, A., Abe, Y., Arikawa, Y., Fujioka, S., Kanasaki, M., Asai, T., Morita, T., Fukuda, Y., Pikuz, S., Pikuz, T., Ohira, Y., Doehl, L. N. K., Woolsey, N., Sano, T.
An experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and a high-intensity picosecond duration laser pulse. Protons are the only accelerated ions when a near-critical-density plasma is driven
Externí odkaz:
http://arxiv.org/abs/2408.13088
Autor:
Sakai, K., Huang, T. Y., Khasanah, N., Bolouki, N., Chu, H. H., Moritaka, T., Sakawa, Y., Sano, T., Tomita, K., Matsukiyo, S., Morita, T., Takabe, H., Yamazaki, R., Yasuhara, R., Habara, H., Kuramitsu, Y.
Publikováno v:
High Energy Density Phys. 52, 101132 (2024)
We investigate the competition of magnetic reconnections in self-generated and external magnetic fields in laser-produced plasmas. The temporal evolution of plasma structures measured with self-emission imaging shows the vertical expansions and horiz
Externí odkaz:
http://arxiv.org/abs/2407.07075
Autor:
Sakai, K., Isayama, S., Bolouki, N., Habibi, M. S., Liu, Y. L., Hsieh, Y. H., Chu, H. H., Wang, J., Chen, S. H., Morita, T., Tomita, K., Yamazaki, R., Sakawa, Y., Matsukiyo, S., Kuramitsu, Y.
Publikováno v:
Phys. Plasmas 27, 103104 (2020)
We investigate collective Thomson scattering (CTS) in two-stream non-equilibrium plasmas analytically, numerically and experimentally. In laboratory astrophysics, CTS is a unique tool to obtain local plasma diagnostics. While the standard CTS theory
Externí odkaz:
http://arxiv.org/abs/2210.11382
Autor:
Morita, T., Matsukiyo, S., Isayama, S., Kojima, T., Matsuo, S., Pan, Y., Yamazaki, R., Tanaka, S. J., Aihara, K., Sato, Y., Shiota, J., Tomita, K., Takezaki, T., Kuramitsu, Y., Sakai, K., Egashira, S., Ishihara, H., Kuramoto, O., Matsumoto, Y., Maeda, K., Sakawa, Y.
Magnetic reconnection in laser-produced magnetized plasma is investigated by using optical diagnostics. The magnetic field is generated via Biermann battery effect, and the inversely directed magnetic field lines interact with each other. It is shown
Externí odkaz:
http://arxiv.org/abs/2209.11975
Autor:
Matsukiyo, S., Yamazaki, R., Morita, T., Tomita, K., Kuramitsu, Y., Tanaka, S. J., Takezaki, T., Isayama, S., Higuchi, T., Murakami, H., Horie, Y., Katsuki, N., Hatsuyama, R., Edamoto, M., Nishioka, H., Takagi, M., Kojima, T., Tomita, S., Ishizaka, N., Kakuchi, S., Sei, S., Sugiyama, K., Aihara, K., Kambayashi, S., Ota, M., Egashira, S., Izumi, T., Minami, T., Nakagawa, Y., Sakai, K., Iwamoto, M., Ozaki, N., Sakawa, Y.
A developing supercritical collisionless shock propagating in a homogeneously magnetized plasma of ambient gas origin having higher uniformity than the previous experiments is formed by using high-power laser experiment. The ambient plasma is not con
Externí odkaz:
http://arxiv.org/abs/2207.12586
Autor:
Yamazaki, Ryo, Matsukiyo, S., Morita, T., Tanaka, S. J., Umeda, T., Aihara, K., Edamoto, M., Egashira, S., Hatsuyama, R., Higuchi, T., Hihara, T., Horie, Y., Hoshino, M., Ishii, A., Ishizaka, N., Itadani, Y., Izumi, T., Kambayashi, S., Kakuchi, S., Katsuki, N., Kawamura, R., Kawamura, Y., Kisaka, S., Kojima, T., Konuma, A., Kumar, R., Minami, T., Miyata, I., Moritaka, T., Murakami, Y., Nagashima, K., Nakagawa, Y., Nishimoto, T., Nishioka, Y., Ohira, Y., Ohnishi, N., Ota, M., Ozaki, N., Sano, T., Sakai, K., Sei, S., Shiota, J., Shoji, Y., Sugiyama, K., Suzuki, D., Takagi, M., Toda, H., Tomita, S., Tomiya, S., Yoneda, H., Takezaki, T., Tomita, K., Kuramitsu, Y., Sakawa, Y.
Publikováno v:
Phys. Rev. E, 105, 025203 (2022)
We present a new experimental method to generate quasi-perpendicular supercritical magnetized collisionless shocks. In our experiment, ambient nitrogen (N) plasma is at rest and well-magnetized, and it has uniform mass density. The plasma is pushed b
Externí odkaz:
http://arxiv.org/abs/2201.07976
Autor:
Morita, T., Nagashima, K., Edamoto, M., Tomita, K., Sano, T., Itadani, Y., Kumar, R., Ota, M., Egashira, S., Yamazaki, R., Tanaka, S. J., Tomita, S., Tomiya, S., Toda, H., Miyata, I., Kakuchi, S., Sei, S., Ishizaka, N., Matsukiyo, S., Kuramitsu, Y., Ohira, Y., Hoshino, M., Sakawa, Y.
Publikováno v:
Physics of Plasmas 26, 090702 (2019)
We developed an experimental platform for studying magnetic reconnection in an external magnetic field with simultaneous measurements of plasma imaging, flow velocity, and magnetic-field variation. Here, we investigate the stagnation and acceleration
Externí odkaz:
http://arxiv.org/abs/1909.02880
Autor:
Umeda, T., Yamazaki, R., Ohira, Y., Ishizaka, N., Kakuchi, S., Kuramitsu, Y., Matsukiyo, S., Miyata, I., Morita, T., Sakawa, Y., Sano, T., Sei, S., Tanaka, S. J., Toda, H., Tomita, S.
A preliminary numerical experiment is conducted for laboratory experiments on the generation of magnetized collisionless shocks with high-power lasers by using one-dimensional particle-in-cell simulation. The present study deals with the interaction
Externí odkaz:
http://arxiv.org/abs/1902.03345
Autor:
Som, L. Van Box, Falize, E., Koenig, M., Sakawa, Y., Albertazzi, B., Barroso, P., Bonnet-Bidaud, J. -M., Busschaert, C., Ciardi, A., Hara, Y., Katsuki, N., Kumar, R., Lefevre, F., Michaut, C., Michel, Th., Miura, T., Morita, T., Mouchet, M., Rigon, G., Sano, T., Shiiba, S., Shimogawara, H., Tomiya, S.
A new target design is presented to model high-energy radiative accretion shocks in polars. In this paper, we present the experimental results obtained on the GEKKO XII laser facility for the POLAR project. The experimental results are compared with
Externí odkaz:
http://arxiv.org/abs/1804.02714
Autor:
Bolis, R. M., Morard, G., Vinci, T., Ravasio, A., Bambrink, E., Guarguaglini, M., Koenig, M., Musella, R., Remus, F., Bouchet, J., Ozaki, N., Miyanishi, K., Sekine, T., Sakawa, Y., Sano, T., Kodama, R., Guyot, F., Benuzzi-Mounaix, A.
We report an experimental study of the phase diagrams of periclase (MgO), enstatite (MgSiO3) and forsterite (Mg2SiO4) at high pressures. We investigated with laser driven decaying shocks the pressure/temperature curves of MgO, MgSiO3 and Mg2SiO4 betw
Externí odkaz:
http://arxiv.org/abs/1604.01554