Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Asher Davidson"'
Autor:
George Petrov, Asher Davidson
Publikováno v:
AIP Advances. 13:035223
The existing “quotidian equation of state (QEOS)” model [More et al., Phys. Fluids 31, 3059 (1988)] has been revised, and an alternative set of formulas is provided for the Helmholtz free energy, internal energy, heat capacity, and pressure. A no
Autor:
J. C. Zier, Bahman Hafizi, Domenico Doria, K. M. Spohr, Asher Davidson, Abdurrahman Younis, Daniel Gordon
Publikováno v:
2021 IEEE International Conference on Plasma Science (ICOPS).
Multi-petawatt laser systems can produce conditions where quantum electrodynamics (QED) effects are important. The effects can lead to efficient generation of gamma rays and electron-positron pairs, suggesting the possibility of generating intense be
Autor:
Frank Tsung, Viktor Decyk, Ricardo Fonseca, Michael Meyers, Fei Li, Xinlu Xu, Asher Davidson, Frederico Fiuza, Luis O. Silva, Peicheng Yu, Adam Tableman, Wei Lu, Weiming An, Jorge Vieira, Thamine Dalichaouch, Warren Mori
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
When modeling laser wakefield acceleration (LWFA) using the particle-in-cell (PIC) algorithm in a Lorentz boosted frame, the plasma is drifting relativistically at beta(b)c towards the laser, which can lead to a computational speedup of similar to ga
Autor:
Warren Mori, Luis O. Silva, Ricardo Fonseca, Weiming An, Wei Lu, Frank Tsung, Asher Davidson, Jorge Vieira, Adam Tableman
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
For many plasma physics problems, three-dimensional and kinetic effects are very important. However, such simulations are very computationally intensive. Fortunately, there is a class of problems for which there is nearly azimuthal symmetry and the d
Autor:
Adam Tableman, Peicheng Yu, Weiming An, Frank Tsung, Warren Mori, Asher Davidson, Wei Lu, Ricardo Fonseca
Publikováno v:
AIP Conference Proceedings.
A detailed study of the scaling laws for LWFA in the self-guided, nonlinear blowout regime is presented. The study is enabled through the recent implementation of the quasi-3D algorithm into OSIRIS, which permits particle-in-cell simulations of LWFA
Autor:
Viktor Decyk, Fei Li, Peicheng Yu, Frank Tsung, Xinlu Xu, Weiming An, Frederico Fiuza, Asher Davidson, Thamine Dalichaouch, Warren Mori, Adam Tableman, Ricardo Fonseca, Wei Lu
Publikováno v:
ISCTE-Instituto Universitário de Lisboa
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
In this paper we present a customized finite-difference-time-domain (FDTD) Maxwell solver for the particle-in-cell (PIC) algorithm. The solver is customized to effectively eliminate the numerical Cerenkov instability (NCI) which arises when a plasma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fd552ff921683c29a36471015635504
http://arxiv.org/abs/1605.01496
http://arxiv.org/abs/1605.01496
Autor:
W. B. Mori, X. Xu, Jorge Vieira, P. Yu, Adam Tableman, Wei Lu, Asher Davidson, Frank Tsung, Ricardo Fonseca, L. O. Silva, V. K. Decyk
Publikováno v:
AIP Conference Proceedings.
Recently it was proposed in [A. F. Lifschitz, et. al., J. Comp. Phys. 228, 1803 (2009)] that laser wakefield acceleration could be modeled efficiently using a particle-in-cell code in cylindrical coordinates if the fields and currents were expanded i
Autor:
Felicie Albert, Joseph Ralph, B. B. Pollock, Frank Tsung, Warren Mori, Chan Joshi, Jessica Shaw, Asher Davidson, Arthur Pak, C. E. Clayton, Nuno Lemos, K. A. Marsh
Publikováno v:
Physical review letters. 115(5)
Ultrarelativistic-energy electron ring structures have been observed from laser-wakefield acceleration experiments in the blowout regime. These electron rings had 170-280 MeV energies with 5%-25% energy spread and ∼10 pC of charge and were observed
Autor:
Jorge Vieira, Warren Mori, Frank Tsung, Frederico Fiuza, Luis O. Silva, Asher Davidson, Ricardo Fonseca
Publikováno v:
Plasma Physics and Controlled Fusion
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
A new generation of laser wakefield accelerators, supported by the extreme accelerating fields generated in the interaction of PW-Class lasers and underdense targets, promises the production of high quality electron beams in short distances for multi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f483932d48070d23981e17aceac95f53
https://hdl.handle.net/10071/7305
https://hdl.handle.net/10071/7305
Autor:
Asher Davidson, Wei Lu, Luis O. Silva, Ricardo Fonseca, Joana Luis Martins, Xinlu Xu, Ming Zheng, Warren Mori, C. Joshi
Publikováno v:
AIP Conference Proceedings.
In plasma based accelerators (LWFA and PWFA), the methods of injecting high quality electron bunches into the accelerating wakefield is of utmost importance for various applications. To fully understand the numerical effect of simulating the trapping