Zobrazeno 1 - 10
of 131
pro vyhledávání: '"James K Koga"'
Autor:
Alexander S Pirozhkov, Masaki Kando, Timur Zh Esirkepov, Pablo Gallegos, Hamad Ahmed, Eugene N Ragozin, Anatoly Ya Faenov, Tatiana A Pikuz, Tetsuya Kawachi, Akito Sagisaka, James K Koga, Mireille Coury, James Green, Peta Foster, Ceri Brenner, Brendan Dromey, Dan R Symes, Michiaki Mori, Keigo Kawase, Takashi Kameshima, Yuji Fukuda, Liming Chen, Izuru Daito, Koichi Ogura, Yukio Hayashi, Hideyuki Kotaki, Hiromitsu Kiriyama, Hajime Okada, Nobuyuki Nishimori, Takashi Imazono, Kiminori Kondo, Toyoaki Kimura, Toshiki Tajima, Hiroyuki Daido, Pattathil Rajeev, Paul McKenna, Marco Borghesi, David Neely, Yoshiaki Kato, Sergei V Bulanov
Publikováno v:
New Journal of Physics, Vol 16, Iss 9, p 093003 (2014)
A new regime of relativistic high-order harmonic generation has been discovered (Pirozhkov 2012 Phys . Rev . Lett . http://dx.doi.org/10.1103/PhysRevLett.108.135004 108 http://dx.doi.org/10.1103/PhysRevLett.108.135004 ). Multi-terawatt relativistic-i
Externí odkaz:
https://doaj.org/article/a86afc9aad834d5088b90aeaab148ef7
Autor:
Lisa Randolph, Mohammadreza Banjafar, Thomas R. Preston, Toshinori Yabuuchi, Mikako Makita, Nicholas P. Dover, Christian Rödel, Sebastian Göde, Yuichi Inubushi, Gerhard Jakob, Johannes Kaa, Akira Kon, James K. Koga, Dmitriy Ksenzov, Takeshi Matsuoka, Mamiko Nishiuchi, Michael Paulus, Frederic Schon, Keiichi Sueda, Yasuhiko Sentoku, Tadashi Togashi, Michael Bussmann, Thomas E. Cowan, Mathias Kläui, Carsten Fortmann-Grote, Lingen Huang, Adrian P. Mancuso, Thomas Kluge, Christian Gutt, Motoaki Nakatsutsumi
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033038 (2022)
Observing ultrafast laser-induced structural changes in nanoscale systems is essential for understanding the dynamics of intense light-matter interactions. For laser intensities on the order of 10^{14}W/cm^{2}, highly collisional plasmas are generate
Externí odkaz:
https://doaj.org/article/7608e9a8c2a54acfa105aa6da5865677
Publikováno v:
Matter and Radiation at Extremes, Vol 4, Iss 3, Pp 034401-034401-7 (2019)
The interaction of micro-bubbles with ultra-intense laser pulses has been shown to generate ultra-high proton densities and correspondingly high electric fields. We investigate the possibility of using such a combination to study the fundamental ph
Externí odkaz:
https://doaj.org/article/af5e073b71c2485b88f3a5201ecd3b35
Autor:
Nicholas P. Dover, Tim Ziegler, Stefan Assenbaum, Constantin Bernert, Stefan Bock, Florian-Emanuel Brack, Thomas E. Cowan, Emma J. Ditter, Marco Garten, Lennart Gaus, Ilja Goethel, George S. Hicks, Hiromitsu Kiriyama, Thomas Kluge, James K. Koga, Akira Kon, Kotaro Kondo, Stephan Kraft, Florian Kroll, Hazel F. Lowe, Josefine Metzkes-Ng, Tatsuhiko Miyatake, Zulfikar Najmudin, Thomas Püschel, Martin Rehwald, Marvin Reimold, Hironao Sakaki, Hans-Peter Schlenvoigt, Keiichiro Shiokawa, Marvin E. P. Umlandt, Ulrich Schramm, Karl Zeil, Mamiko Nishiuchi
Publikováno v:
Light, science & applications, vol 12, iss 1
Laser-driven ion sources are a rapidly developing technology producing high energy, high peak current beams. Their suitability for applications, such as compact medical accelerators, motivates development of robust acceleration schemes using widely a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb7abf13dbf5185e15a0585b56a59397
https://escholarship.org/uc/item/1sv970wc
https://escholarship.org/uc/item/1sv970wc
Autor:
Hiromitsu Kiriyama, Alexander S. Pirozhkov, Mamiko Nishiuchi, Yuji Fukuda, Akito Sagisaka, Akira Kon, Yasuhiro Miyasaka, Koichi Ogura, Nicholas P. Dover, Kotaro Kondo, Hironao Sakaki, James K. Koga, Timur Zh. Esirkepov, Kai Huang, Nobuhiko Nakanii, Masaki Kando, Kiminori Kondo, Stefan Bock, Tim Ziegler, Thomas Püschel, Karl Zeil, Ulrich Schramm
Publikováno v:
Crystals, Vol 10, Iss 9, p 783 (2020)
Ultra-high intensity femtosecond lasers have now become excellent scientific tools for the study of extreme material states in small-scale laboratory settings. The invention of chirped-pulse amplification (CPA) combined with titanium-doped sapphire (
Externí odkaz:
https://doaj.org/article/f290c12aa4ad41118d05d6dbfca0dcfc
Publikováno v:
Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f789d90690f0375aae82a587ff49f83
https://doi.org/10.22323/1.380.0121
https://doi.org/10.22323/1.380.0121
Publikováno v:
Quantum Beam Science, Vol 2, Iss 2, p 9 (2018)
Coherent, Short X-ray pulses are demanded in material science and biology for the study of micro-structures. Currently, large-sized free-electron lasers are used; however, the available beam lines are limited because of the large construction cost. H
Externí odkaz:
https://doaj.org/article/62be2eed26e74e659bae221dc6acfefc
Autor:
Alexander S. Pirozhkov, Timur Zh. Esirkepov, Tatiana A. Pikuz, Anatoly Ya. Faenov, Akito Sagisaka, Koichi Ogura, Yukio Hayashi, Hideyuki Kotaki, Eugene N. Ragozin, David Neely, James K. Koga, Yuji Fukuda, Masaharu Nishikino, Takashi Imazono, Noboru Hasegawa, Tetsuya Kawachi, Hiroyuki Daido, Yoshiaki Kato, Sergei V. Bulanov, Kiminori Kondo, Hiromitsu Kiriyama, Masaki Kando
Publikováno v:
Quantum Beam Science, Vol 2, Iss 1, p 7 (2018)
We discuss requirements on relativistic-irradiance (I0 > 1018 W/cm2) high-power (multi-terawatt) ultrashort (femtosecond) lasers for efficient generation of high-order harmonics in gas jet targets in a new regime discovered recently (Pirozhkov et al.
Externí odkaz:
https://doaj.org/article/0767684262ea428a96515cbae42ac57f
Publikováno v:
Physical Review
The Gamma Factory is a proposal to back-scatter laser photons off a beam of partially-stripped ions at the LHC, producing a beam of $\sim 10$ MeV to $1$ GeV photons with intensities of $10^{16}$ to $10^{18}~\text{s}^{-1}$. This implies $\sim 10^{23}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73c1fbcb202d5e7553012330bd4ede09
https://doi.org/10.1103/physrevd.104.055023
https://doi.org/10.1103/physrevd.104.055023
Publikováno v:
Photonics. 9:862
Recent progress of high-peak-power lasers makes researchers envisage ultra-high-field science; however, the current or near future facilities will not be strong enough to reach the vacuum breakdown intensity, i.e., the Schwinger field. To address thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68ed90081d5895f51aad963d99a8b097
https://doi.org/10.3390/photonics9110862
https://doi.org/10.3390/photonics9110862