Long-range persistence of femtosecond modulations on laser-plasma-accelerated electron beams

Laser plasma accelerators have produced femtosecond electron bunches with a relative energy spread ranging from 100% to a few percent. Simulations indicate that the measured energy spread can be dominated by a correlated spread, with the slice spread significantly lower. Measurements of coherent opt...

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Bibliographic Details
Published in:Physical review letters 2012-03, Vol.108 (9), p.094801-094801, Article 094801
Main Authors: Lin, C, van Tilborg, J, Nakamura, K, Gonsalves, A J, Matlis, N H, Sokollik, T, Shiraishi, S, Osterhoff, J, Benedetti, C, Schroeder, C B, Tóth, Cs, Esarey, E, Leemans, W P
Format: Article
Language:English
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Summary:Laser plasma accelerators have produced femtosecond electron bunches with a relative energy spread ranging from 100% to a few percent. Simulations indicate that the measured energy spread can be dominated by a correlated spread, with the slice spread significantly lower. Measurements of coherent optical transition radiation are presented for broad-energy-spread beams with laser-induced density and momentum modulations. The long-range (meter-scale) observation of coherent optical transition radiation indicates that the slice energy spread is below the percent level to preserve the modulations.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.108.094801