Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Kevin, Koga James"'
Autor:
Kevin Koga, James, Takehito, Hayakawa
Publikováno v:
プラズマ・核融合学会誌. 97(12):671-675
Currently throughout the world there has been a rapid increase in the number of ultra-high power petawatt-class laser facilities. These lasers have been shown via the interaction of plasmas to produce high energy electrons, protons and gamma rays. As
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::b2c307285c74af5d21ac402c92e3f527
https://repo.qst.go.jp/records/84419
https://repo.qst.go.jp/records/84419
Autor:
Shatokhin, A., Kotov, A., M. Jeong, T., M. Grittani, G., Dzelzainis, T., Hull, G., Dann, S., Akito, Sagisaka, Vishnyakov, E., Kolesnikov, A., Masato, Koike, Timur, Esirkepov, Masaki, Kando, Koichi, Ogura, A. Pikuz, T., Kevin Koga, James, Hiromitsu, Kiriyama, Soloviev, A., Ragozin, E., Bulanov, Sergey, Kiminori, Kondo, Tetsuya, Kawachi, Symes, D., Neely, D., Pirozhkov, Alexander
1. Introduction Burst Intensification by Singularity Emitting Radiation (BISER) [1] is the emission of coherent traveling waves by multi-stream flow singularities. Such singularities can be produced in relativistic plasma by high-power lasers, result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::989a393b1fae62b05fd9a731e4317ede
https://repo.qst.go.jp/records/86567
https://repo.qst.go.jp/records/86567
Autor:
Kevin Koga, James, Takehito, Hayakawa
Quantum electrodynamics (QED), which describes the interaction of photons with electrons, has been tested experimentally and found to agree with experiments to high precision to lowest order. However, higher order measurements are required to test QE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::08518f34be0a6e5f42b255fac0029b95
https://repo.qst.go.jp/records/85865
https://repo.qst.go.jp/records/85865
Autor:
Moon Jeong, Tae, Bulanov, Sergey, Sasorov, Pavel, S. Bulanov, Stepan, Kevin Koga, James, Korn, Georg
Publikováno v:
Optics Express. 28(9):13991-14006
The focused field and its intensity distribution achieved by the 4pi-spherical focusing scheme are investigated within the framework of diffraction optics. Generalized mathematical formulas describing the spatial distributions of the focused electric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::33d71d0321d2a9b811d259494ac0d60c
https://repo.qst.go.jp/records/79956
https://repo.qst.go.jp/records/79956
Autor:
Shatokhin, A., Kotov, A., M. Jeong, T., M. Grittani, G., Dzelzainis, T., Hull, G., Dann, S., Akito, Sagisaka, Vishnyakov, E., Kolesnikov, A., Masato, Koike, Timur, Esirkepov, Masaki, Kando, Koichi, Ogura, A. Pikuz, T., Kevin Koga, James, Hiromitsu, Kiriyama, Soloviev, A., Ragozin, E., Bulanov, Sergey, Kiminori, Kondo, Tetsuya, Kawachi, Symes, D., Neely, D., Pirozhkov, Alexander
Burst Intensification by Singularity Emitting Radiation (BISER) [1] is the phenomenon of extremely bright coherent wave emission (constructive interference, N^2 effect) by singularities of multi-stream flows. High-power femtosecond lasers can produce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::980c7199ce702169597fa763ba680987
https://repo.qst.go.jp/records/85966
https://repo.qst.go.jp/records/85966
Autor:
HUANG, KAI, Hideyuki, Kotaki, Michiaki, Mori, Timur, Esirkepov, Kevin Koga, James, Yukio, Hayashi, Nobuhiko, Nakanii, Masaki, Kando, Jin, Zhan, Tomonao, Hosokai
1.Why temporal diagnostics are necessary in LWFA 2.Electro-optic (EO) spatial decoding technique 3.EO spatial decoding on the Coulomb field of electron bunches from LWFA (Emission timing) 4.EO spatial decoding on the coherent transition radiation (CT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::8cefe9cec7ddfea2af3f2856bb534218
https://repo.qst.go.jp/records/84842
https://repo.qst.go.jp/records/84842
Autor:
HUANG, KAI, Hideyuki, Kotaki, Michiaki, Mori, Timur, Esirkepov, Kevin Koga, James, Yukio, Hayashi, Nobuhiko, Nakanii, Bulanov, Sergey, Masaki, Kando
Laser wakefield acceleration (LWFA)1 has been studied intensively due to the inherent ultrashort bunch duration (fs) and large acceleration gradient (GV/cm) over conventional accelerators. For application such as pump-probe experiment, knowledge of n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::7da2f1d9b80a033127ea85380bb3d3c3
https://repo.qst.go.jp/records/84473
https://repo.qst.go.jp/records/84473
Autor:
HUANG, KAI, Hideyuki, Kotaki, Michiaki, Mori, Timur, Esirkepov, Kevin Koga, James, Yukio, Hayashi, Nobuhiko, Nakanii, Jin, Zhan, Tomonao, Hosokai, Masaki, Kando
High power laser-driven electron sources [1,2], with their inherent ultrafast character, are considered to have potentials for applications in fast ignition [3], pump-probe study [4], and the construction of a table-top x-ray free-electron laser (XFE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::42b0110e7b0b572c7c4038788e671324
https://repo.qst.go.jp/records/83834
https://repo.qst.go.jp/records/83834
Autor:
Kevin Koga, James, Masaki, Kando
The International Linear Collider (ILC) will have electron and positron beam energies above 125 GeV. High intensity lasers have achieved unprecedented intensities of $10^{23}$ W/cm$^2$. Although typically such lasers have photons with energies in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::ce00b7b0ca4257bf2850e9856412a7dd
https://repo.qst.go.jp/records/83672
https://repo.qst.go.jp/records/83672
By back-scattering laser photons off partially-stripped ion beams at the LHC the Gamma Factory (GF) will produce photons of ∼ 10 MeV to 1 GeV with fluxes of $10^{16~18}$. $\sim 10^{23~25} photons per year is many orders of magnitude greater than ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::935a503ad80472013f3bc2d6c40e389c
https://repo.qst.go.jp/records/83347
https://repo.qst.go.jp/records/83347