Electron bunch length measurements from laser-accelerated electrons using single-shot THz time-domain interferometry
| Autor: | Zsuzsanna Major, Steven Jamison, Ulrich Schramm, Klaus Witte, Jörg Schreiber, Sergey Kiselev, R. Sauerbrey, Peta Foster, Bernhard Hidding, Stefan Karsch, C. J. Hooker, Peter Norreys, Karl Schmid, Klaus Ertel, Malte C. Kaluza, David Neely, E. J. Divall, R. Heathcote, Alexander Debus, John Collier, A. J. Langley, Michael Bussmann, C. D. Murphy, Dino A. Jaroszynski, J. G. Gallacher, Laszlo Veisz, Rainer Hörlein, Jessica Smith |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Physics
business.industry General Physics and Astronomy Pulse duration Electron Laser Plasma acceleration law.invention Pulse (physics) Interferometry Length measurement Optics Transition radiation law electron bunch length measurement coherent transition radiation laser plasma wakefield acceleration Atomic physics business |
| Zdroj: | Physical Review Letters 104(2010), 084802 TR18-Treffen Bad Breisig, 04.03.-05.05.2010, Bad Breisig, Deutschland DPG Tagung 2010, 08.-12.03.2010, Hannover, Deutschland |
| Popis: | Laser-plasma wakefield-based electron accelerators are expected to deliver ultrashort electron bunches with unprecedented peak currents. However, their actual pulse duration has never been directly measured in a single-shot experiment. We present measurements of the ultrashort duration of such electron bunches by means of THz time-domain interferometry. With data obtained using a 0.5 J, 45 fs, 800 nm laser and a ZnTe-based electro-optical setup, we demonstrate the duration of laser-accelerated, quasimonoenergetic electron bunches [best fit of 32 fs (FWHM) with a 90% upper confidence level of 38 fs] to be shorter than the drive laser pulse, but similar to the plasma period. © 2010 The American Physical Society. |
| Databáze: | OpenAIRE |
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