On the investigation of fast electron beam filamentation in laser-irradiated solid targets using multi-MeV proton emission
| Autor: | R. G. Evans, P. Gallegos, Marco Borghesi, K. Quinn, Gianluca Sarri, L. Lancia, Alexander Robinson, C. Spindloe, David Carroll, P. A. Wilson, Mark N. Quinn, Xiaohui Yuan, Paul McKenna, Lorenzo Romagnani, David Neely, R.J. Clarke, Julien Fuchs |
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| Přispěvatelé: | Quinn, MN, Carroll, DC, Yuan, XH, Borghesi, M, Clarke, RJ, Evans, RG, Fuchs, J, Gallegos, P, Lancia, L, Quinn, K, Robinson, APL, Romagnani, L, Sarri, G, Spindloe, C, Wilson, PA, Neely, D, McKenna, P |
| Rok vydání: | 2011 |
| Předmět: |
lateral expansion
Proton solid targets Electron law.invention Filamentation Physics::Plasma Physics law ignition nonuniformity fast electron beam fast electrons Proton emission Physics Plasma Condensed Matter Physics Laser filamentation proton acceleration Nuclear Energy and Engineering transport Cathode ray Physics::Accelerator Physics multi-mev protons Atomic physics insulating targets Beam (structure) picosecond laser pulse |
| Zdroj: | Plasma Physics and Controlled Fusion. 53:124012 |
| ISSN: | 1361-6587 0741-3335 |
| Popis: | The transverse filamentation of beams of fast electrons transported in solid targets irradiated by ultraintense (5 × 1020 W cm−2), picosecond laser pulses is investigated experimentally. Filamentation is diagnosed by measuring the uniformity of a beam of multi-MeV protons accelerated by the sheath field formed by the arrival of the fast electrons at the rear of the target, and is investigated for metallic and insulator targets ranging in thickness from 50 to 1200 µm. By developing an analytical model, the effects of lateral expansion of electron beam filaments in the sheath during the proton acceleration process is shown to account for measured increases in proton beam nonuniformity with target thickness for the insulating targets. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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