Abstract
By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam's betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of the synchrotronlike x-ray spectrum can be significantly increased. The coma does not substantially change the energy of the electron beam, but does increase its divergence and produces an energy-dependent exit angle, indicating that changes in the x-ray spectrum are due to an increase in the electron beam's oscillation amplitude within the wakefield.
Original language | English |
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Article number | 181106 |
Journal | Applied Physics Letters |
Volume | 95 |
Issue number | 18 |
DOIs | |
Publication status | Published - 1 Jan 2009 |
MoE publication type | Not Eligible |