Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Synchrotron x-ray radiation from laser wakefield accelerated electron beams in a plasma channel
AU - Matsuoka, Takeshi
AU - Kneip, Stefan
AU - McGuffey, Christopher
AU - Palmer, Charlotte Alexandra Jocelyn
AU - Schreiber, Joerg
AU - Huntington, C.
AU - Horovitz, Y.
AU - Dollar, Franklin
AU - Chvykov, Vladimir
AU - Kalintchenko, Galina
AU - Thomas, Alexander George Roy
AU - Yanovsky, Victor
AU - Phuoc, K. Ta
AU - Mangles, Stuart P. D.
AU - Najmudin, Zulfikar
AU - Maksimchuk, Anatoly
AU - Krushelnick, Karl
PY - 2010
Y1 - 2010
N2 - Synchrotron x-ray radiation from laser wakefield accelerated electron beams was characterized at the HERCULES facility of the University of Michigan. A mono-energetic electron beam with energy up to 400 MeV was observed in the interaction of an ultra-short laser pulse with a super-sonic gas jet target. The experiments were performed at a peak intensity of 5×1019 W/cm2 by using an adaptive optic. The accelerated electron beam undergoes a so called "betatron" oscillation in an ion channel, where plasma electrons have been expelled by the laser ponderomotive force, and, therefore, emits synchrotron radiation. We observe broad synchrotron x-ray radiation extending up to 30 keV. We find that this radiation is emitted in a beam with a divergence angle as small as 12×4 mrad2 and can have a source size smaller than 3 microns and a peak brightness of 1022 photons/mm2/mrad2/second/0.1% bandwidth, which is comparable to currently existing 3rd generation conventional light sources. This opens up the possibility of using laser-produced "betatron" sources for many applications that currently require conventional synchrotron sources.
AB - Synchrotron x-ray radiation from laser wakefield accelerated electron beams was characterized at the HERCULES facility of the University of Michigan. A mono-energetic electron beam with energy up to 400 MeV was observed in the interaction of an ultra-short laser pulse with a super-sonic gas jet target. The experiments were performed at a peak intensity of 5×1019 W/cm2 by using an adaptive optic. The accelerated electron beam undergoes a so called "betatron" oscillation in an ion channel, where plasma electrons have been expelled by the laser ponderomotive force, and, therefore, emits synchrotron radiation. We observe broad synchrotron x-ray radiation extending up to 30 keV. We find that this radiation is emitted in a beam with a divergence angle as small as 12×4 mrad2 and can have a source size smaller than 3 microns and a peak brightness of 1022 photons/mm2/mrad2/second/0.1% bandwidth, which is comparable to currently existing 3rd generation conventional light sources. This opens up the possibility of using laser-produced "betatron" sources for many applications that currently require conventional synchrotron sources.
U2 - 10.1088/1742-6596/244/4/042026
DO - 10.1088/1742-6596/244/4/042026
M3 - Journal article
VL - 244
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 4
M1 - 042026
ER -