Soft X-ray harmonic comb from relativistic electron spikes

Autoria(s): Pirozkhov, A.S.; Kando, M.; Zh, Esirkepov T.; Gallegos, P.; Ahmed, Hamad; Ragozin, E.N.; Ya, Faenov A.; Pikuz, T.A.; Kawachi, T.; Sagisaka, A.; Koga, J.K.; Coury, M.; Green, J.; Foster, P.F.; Brenner, C.; Dromey, Brendan; 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, Marco; Neely, D.; Kato, Y.; Bulanov, S.V.
Data(s)

30/03/2012
Resumo

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.
Formato

application/pdf
Identificador

http://pure.qub.ac.uk/portal/en/publications/soft-xray-harmonic-comb-from-relativistic-electron-spikes(18cbfebb-2f74-4323-8e33-7f1e0395f995).html

http://dx.doi.org/10.1103/PhysRevLett.108.135004

http://pure.qub.ac.uk/ws/files/1718215/Paper_1.pdf
Idioma(s)

eng
Direitos

info:eu-repo/semantics/openAccess
Fonte

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 . DOI: 10.1103/PhysRevLett.108.135004
Palavras-Chave #/dk/atira/pure/subjectarea/asjc/3100 #Physics and Astronomy(all)
Tipo

article
Acesso ao item digital