X-Ray Based Subpicosecond Electron Bunch Characterization Using 90° Thomson Scattering

MeV-Energy X Rays from Inverse Compton Scattering with Laser-Wakefield Accelerated Electrons

“…Methods based on diffraction, which are usually used to measure the source size of keV x rays [8,17,18], cannot be applied to the -ray source due to the high photon energy ($ MeV). Instead, we exploit the spatial cross-correlation technique to measure the radiation source size [19][20][21][22], in which the scattering beam focal spot was scanned vertically across the e beam over a spatial range of 90 m. The shots with similar electron beam pointing and spectra were first selected from each scanning position. The recorded -ray beam profiles were then analyzed, and the resulting photon yield, as a function of radius, is shown in Fig.…”

Reconstructing longitudinal strain pulses using time-resolved x-ray diffraction

“…For example, laser based sources have been shown to have a minimum x-ray pulse widths on order of 150 fs 3 , limited by the laser induced electron dynamics, while the temporal resolution of synchrotron sources are typically dictated by either ultrafast x-ray streak cameras 42,43 or the accelerated electron bunches [44][45][46][47][48] (∼100 fs). (Although x-ray free electron lasers have trains of attosecond x-ray pulses 49 , a simple method of isolating a single attosecond pulse will be technically challenging).…”

Angular spectrum characteristics of relativistic inverse compton harmonic X-rays

“…The emerging use of short, intense lasers has led to the productions of sub-ps pulses [4] of up-to 10 7-8 [5] X-rays or γ-rays [6]. In addition, several promising applications have been demonstrated utilizing these photon sources, such as phase contrast imaging [7], and single shot diffraction [8].…”