Zobrazeno 1 - 10
of 231
pro vyhledávání: '"Kawata, Shigeo"'
Autor:
Kawata, Shigeo
We proposed a dynamic mitigation method for plasma instabilities based on a phase control to mitigate plasma instabilities and to smooth plasma non-uniformities [e.g. Phys. Plasmas, 19(2012)024503]. In plasmas, perturbation phase would be unknown in
Externí odkaz:
http://arxiv.org/abs/2406.14899
Autor:
Kawata, Shigeo
The two-dimensional (2D) conformal field theory (CFT) suggests that the 2D plasma turbulence, governed by the Hasegawa-Mima (H-M) equation, may have multiple exponents of energy spectrum in momentum space. Electrostatic potential driven by drift wave
Externí odkaz:
http://arxiv.org/abs/2306.00348
Dynamic mitigation is presented for filamentation instability and magnetic reconnection in a plasm driven by a wobbling electron sheet current. The wobbling current introduces an oscillating perturbation and smooths the perturbation. The sheet curren
Externí odkaz:
http://arxiv.org/abs/2101.07939
The document describes a numerical algorithm to simulate plasmas and fluids in the 3 dimensional space by the Euler method, in which the spatial meshes are fixed to the space. The plasmas and fluids move through the spacial Euler mesh boundary. The E
Externí odkaz:
http://arxiv.org/abs/2004.03810
Autor:
Kawata, Shigeo
The document describes a numerical algorithm for plasms and fluids by the Lagrange method, in which the spatial meshes follow the plasma and fluid behavior. Through the mesh wall the plasma and the fluid do not escape. The 3D Lagrange code is origina
Externí odkaz:
http://arxiv.org/abs/2003.01284
Autor:
Li, Xiao Feng, Kawata, Shigeo, Kong, Qing, Wang, Ping Xiao, Yu, Qin, Gu, Yan Jan, Qu, Jun Fan
A nanostructured target is proposed to enhance an intense-laser contrast: when a laser prepulse irradiates a nanostructured solid target surface, the prepulse is absorbed effectively by the nanostructured surface. The nanostructure size should be les
Externí odkaz:
http://arxiv.org/abs/1606.05935
Autor:
Kawata, Shigeo
The numerical results for the fuel target implosion are presented in order to clarify the target physics in ion beam inertial fusion. The numerical analyses are performed for a direct-driven ion beam target. In the paper the following issues are stud
Externí odkaz:
http://arxiv.org/abs/1504.01831
Autor:
Kawata, Shigeo
Parallel computation is widely employed in scientific researches, engineering activities and product development. Parallel program writing itself is not always a simple task depending on problems solved. Large-scale scientific computing, huge data an
Externí odkaz:
http://arxiv.org/abs/1503.04501
Autor:
Kawata, Shigeo, Izumiyama, Takeshi, Nagashima, Toshihiro, Takano, Masahiro, Barada, Daisuke, Kong, Qing, Gu, Yan Jun, Wang, Ping Xiao, Ma, Yan Yun, Wang, Wei Ming
Publikováno v:
Published in LASER THERAPY, vol. 22, No. 2 (2013) pp. 103-114
Ion beam has been used in cancer treatment, and has a unique preferable feature to deposit its main energy inside a human body so that cancer cell could be killed by the ion beam. However, conventional ion accelerator tends to be huge in its size and
Externí odkaz:
http://arxiv.org/abs/1307.0281
Autor:
Kawata, Shigeo
A coupling onset of the cyclone upward and rotation flows is experimentally demonstrated in a little bottle. The rotating flow provides a pressure increase in the outer part of the rotating flow by its centrifugal force. When a gradient of the fluid
Externí odkaz:
http://arxiv.org/abs/1210.7872