Thomson scattering of intense lasers from electron beams at arbitrary interaction angles

Ride, S. K.; Esarey, E.; Baine, M.

doi:10.1103/physreve.52.5425

Cited by 141 publications

(120 citation statements)

References 36 publications

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“…While the theory of Thomson backscattered radiation is well known and has been well documented [18][19][20][21][22][23][24], there remains a need to have a complete three-dimensional time resolved computational capability for the full determination of the temporally and spatially resolved spectra and intensity distributions produced from a Thomson interaction of arbitrary geometry. This capability is crucial for both the design of Thomson scattered x-ray sources, as well as future experiments and applications utilizing such sources.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional time and frequency-domain theory of femtosecond x-ray pulse generation through Thomson scattering

Brown

Hartemann

2004

Phys. Rev. ST Accel. Beams

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The generation of high intensity, ultrashort x-ray pulses enables exciting new experimental capabilities, such as femtosecond pump-probe experiments used to temporally resolve material structural dynamics on atomic time scales. Thomson backscattering of a high intensity laser pulse with a bright relativistic electron bunch is a promising method for producing such high-brightness x-ray pulses in the 10 -100 keV range within a compact facility. While a variety of methods for producing subpicosecond x-ray bursts by Thomson scattering exist, including compression of the electron bunch to subpicosecond bunch lengths and/or colliding a subpicosecond laser pulse in a side-on geometry to minimize the interaction time, a promising alternative approach to achieving this goal while maintaining ultrahigh brightness is the production of a time-correlated (or chirped) x-ray pulse in conjunction with pulse slicing or compression. We present the results of a complete analysis of this process using a recently developed 3D time and frequency-domain code for analyzing the spatial, temporal, and spectral properties an x-ray beam produced by relativistic Thomson scattering. Based on the relativistic differential cross section, this code has the capability to calculate time and space dependent spectra of the x-ray photons produced from linear Thomson scattering for both bandwidth-limited and chirped incident laser pulses. Spectral broadening of the scattered x-ray pulse resulting from the incident laser bandwidth, laser focus, and the transverse and longitudinal phase space of the electron beam were examined. Simulations of chirped x-ray pulse production using both a chirped electron beam and a chirped laser pulse are presented. Required electron beam and laser parameters are summarized by investigating the effects of beam emittance, energy spread, and laser bandwidth on the scattered x-ray spectrum. It is shown that sufficient temporal correlation in the scattered x-ray spectrum to produce sub-100 fs temporal slice resolution can be produced from state-of-the-art, high-brightness electron beams without the need to perform longitudinal compression on the electron bunch.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional time and frequency-domain theory of femtosecond x-ray pulse generation through Thomson scattering

Brown

Hartemann

2004

Phys. Rev. ST Accel. Beams

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“…Neglecting higher harmonics, the energy of the emitted photons for the case of a near head-on collision of the laser pulse and a bunch of relativistic electrons is given by [27,28] …”

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confidence: 99%

“…For head-on collision and relativistic intensities of the colliding pulse the number of generated x-ray photons N X per shot is given by [27,28] …”

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confidence: 99%

Tunable All-Optical Quasimonochromatic Thomson X-Ray Source in the Nonlinear Regime

et al. 2015

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We present an all-laser-driven, energy-tunable, and quasimonochromatic x-ray source based on Thomson scattering from laser-wakefield-accelerated electrons. One part of the laser beam was used to drive a few-fs bunch of quasimonoenergetic electrons, while the remainder was backscattered off the bunch at weakly relativistic intensity. When the electron energy was tuned from 17-50 MeV, narrow x-ray spectra peaking at 5-42 keV were recorded with high resolution, revealing nonlinear features. We present a large set of measurements showing the stability and practicality of our source.

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“…This feature is physically understandable, if we take into account that the ultrarelativistic electron moves practically in phase with the copropagating component of the standing wave and experiences quickly oscillating force from the counterpropagating component. Thus, we can expect that the overall angular and spectral spread of the radiated photons shall generally obey distributions obtained in [14,15,19,20] for Compton (or Thomson) backscattering of a single laser beam on the relativistic electron beam. However, more detailed analysis may be necessary, especially for angular and frequency distributions of the radiation intensity that depend on the initial phase.…”

Section: Discussionmentioning

confidence: 99%

Nonlinear Compton scattering and electron acceleration in interfering laser beams

Amatuni

Pogorelsky

1998

Phys. Rev. ST Accel. Beams

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The exact solution of the classical nonlinear equation of motion for a relativistic electron in the field of two electromagnetic (EM) waves is obtained. For the particular case of the linearly polarized standing EM wave in the planar optical cavity, intensity of the nonlinear Compton scattering, the time of flight, and the momentum variation after the relativistic electron passes along the cavity axis are calculated in weak and strong field limits. These effects depend on the initial phase of the EM wave at the electron entrance into the cavity and can be used for producing, diagnostics, and acceleration of relativistic electron (positron) microbunches. [S1098-4402(98)00007-X]

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Thomson scattering of intense lasers from electron beams at arbitrary interaction angles

Cited by 141 publications

References 36 publications

Three-dimensional time and frequency-domain theory of femtosecond x-ray pulse generation through Thomson scattering

Three-dimensional time and frequency-domain theory of femtosecond x-ray pulse generation through Thomson scattering

Tunable All-Optical Quasimonochromatic Thomson X-Ray Source in the Nonlinear Regime

Nonlinear Compton scattering and electron acceleration in interfering laser beams

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