Open AccessAn ultrashort pulse ultra-violet radiation undulator source driven by a laser plasma wakefield accelerator
Author(s) -
M. P. Anania,
E. Brunetti,
S. M. Wiggins,
D. W. Grant,
G. H. Welsh,
R. C. Issac,
Silvia Cipiccia,
Richard Shanks,
G. G. Manahan,
Constantin Aniculaesei,
S.B. van der Geer,
M. J. de Loos,
M.W. Poole,
B. J. A. Shepherd,
J.A. Clarke,
W. A. Gillespie,
A. M. MacLeod,
D. A. Jaroszynski
Publication year - 2014
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.4886997
Subject(s) - undulator , laser , optics , pulse duration , physics , radiation , femtosecond , photon , plasma , plasma acceleration , electron , cathode ray , photon energy , atomic physics , nuclear physics
Narrow band undulator radiation tuneable over the wavelength range of 150–260 nm has been produced by short electron bunches from a 2 mm long laser plasma wakefield accelerator based on a 20 TW femtosecond laser system. The number of photons measured is up to 9 × 106 per shot for a 100 period undulator, with a mean peak brilliance of 1 × 1018 photons/s/mrad2/mm2/0.1% bandwidth. Simulations estimate that the driving electron bunch r.m.s. duration is as short as 3 fs when the electron beam has energy of 120–130 MeV with the radiation pulse duration in the range of 50–100 fs
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