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Soft X-ray harmonic comb from relativistic electron spikes

Authors :: E. N. Ragozin
Tetsuya Kawachi
Brendan Dromey
Michiyasu Mori
David Neely
Kotaro Kondo
P. P. Rajeev
Toshiki Tajima
Paul McKenna
P. Gallegos
Nobuyuki Nishimori
Izuru Daito
Hajime Okada
Akito Sagisaka
D. R. Symes
Peta Foster
M. Coury
Liming Chen
Alexander S. Pirozhkov
Hideyuki Kotaki
Ceri Brenner
Sergei V. Bulanov
Takashi Imazono
Yukio Hayashi
Yoshiaki Kato
Hamad Ahmed
Takashi Kameshima
Toyoaki Kimura
Koichi Ogura
K. Kawase
James Green
Yuji Fukuda
T. Zh. Esirkepov
Hiromitsu Kiriyama
A. Ya. Faenov
James Koga
Marco Borghesi
Masaki Kando
T. A. Pikuz
Hiroyuki Daido
Source :: Pirozkhov, A S, Kando, M, Zh, E T, Gallegos, P, Ahmed, H, Ragozin, E N, Ya, F A, Pikuz, T A, Kawachi, T, Sagisaka, A, Koga, J K, Coury, M, Green, J, Foster, P F, Brenner, C, Dromey, B, Symes, D R, Mori, M, Kawase, K, Kameshima, T, Fukuda, Y, Chen, L, Daito, I, Ogura, K, Hayashi, Y, Kotaki, H, Kiriyama, H, Okada, H, Nishimori, N, Imazono, T, Kondo, K, Kimura, T, Tajima, T, Daido, H, Rajeev, P, McKenna, P, Borghesi, M, Neely, D, Kato, Y & Bulanov, S V 2012, ' Soft X-ray harmonic comb from relativistic electron spikes ', Physical Review Letters, vol. 108, no. 13, 135004 . https://doi.org/10.1103/PhysRevLett.108.135004
Publication Year :: 2012
Publisher :: arXiv, 2012.
Abstract: We demonstrate a new high-order harmonic generation mechanism reaching the "water window" spectral region in experiments with multiterawatt femtosecond lasers irradiating gas jets. A few hundred harmonic orders are resolved, giving mu J/sr pulses. Harmonics are collectively emitted by an oscillating electron spike formed at the joint of the boundaries of a cavity and bow wave created by a relativistically self-focusing laser in underdense plasma. The spike sharpness and stability are explained by catastrophe theory. The mechanism is corroborated by particle-in-cell simulations.

Details

Database :: OpenAIRE
Journal :: Pirozkhov, A S, Kando, M, Zh, E T, Gallegos, P, Ahmed, H, Ragozin, E N, Ya, F A, Pikuz, T A, Kawachi, T, Sagisaka, A, Koga, J K, Coury, M, Green, J, Foster, P F, Brenner, C, Dromey, B, Symes, D R, Mori, M, Kawase, K, Kameshima, T, Fukuda, Y, Chen, L, Daito, I, Ogura, K, Hayashi, Y, Kotaki, H, Kiriyama, H, Okada, H, Nishimori, N, Imazono, T, Kondo, K, Kimura, T, Tajima, T, Daido, H, Rajeev, P, McKenna, P, Borghesi, M, Neely, D, Kato, Y & Bulanov, S V 2012, ' Soft X-ray harmonic comb from relativistic electron spikes ', Physical Review Letters, vol. 108, no. 13, 135004 . https://doi.org/10.1103/PhysRevLett.108.135004
Accession number :: edsair.doi.dedup.....0f72e6fb07c7c08db80cade7c2dcdf1b
Full Text :: https://doi.org/10.48550/arxiv.1201.0333