Observation of Nonlinear Effects in Compton Scattering

Bula, C.; McDonald, Kirk T.; Prebys, E.; Bamber, C.; Boege, S.; Kotseroglou, T.; Melissinos, A. C.; Meyerhofer, D. D.; Ragg, W.; Burke, D. L.; Field, R. C.; Horton-Smith, G. A.; Odian, A.; Spencer, J.E.; Walz, D.; Berridge, S.; Bugg, W.; Shmakov, K.; Weidemann, A. W.

doi:10.1103/physrevlett.76.3116

Cited by 605 publications

(487 citation statements)

References 7 publications

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“…One important reason is that in physical experiments one endeavors to define as exactly as possible the initial and/or final states of the systems being considered. Moreover experiments on laser-induced process in strong laser fields well be- * Electronic address: bouzid.manaut@laposte.net † Electronic address: attaourti@ucam.ac.ma yond the atomic field strength intensity of about 3.5 10 16 W/cm 2 have clearly given evidence of relativistic effects [5]. However, the search for spin-specific effects has been rare [6]- [7].…”

Section: Introductionmentioning

confidence: 99%

Mott scattering of polarized electrons in a strong laser field

2005

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We present analytical and numerical results of the relativistic calculation of the transition matrix element S f i and differential cross section for Mott scattering of initially polarized Dirac particles (electrons) in the presence of strong laser field with linear polarization. We use exact Dirac-Volkov wave functions to describe the dressed electrons and the collision process is treated in the first Born approximation. The influence of the laser field on the degree of polarization of the scattered electron is reported.

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Section: Introductionmentioning

confidence: 99%

Mott scattering of polarized electrons in a strong laser field

2005

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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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“…Though pair production has been demonstrated at SLAC (E144-experiment) [32] by the interaction of y-ray with an intense laser at intensities in the range of 10 18 W/cm 2 , the direct production of pairs by a high-intensity laser from vacuum remains elusive. The rule of thumb for threshold of pair production derives from the simple argument that it is the field necessary for a virtual electron to gain an energy 2raoc 2 during its lifetime §t , imposed by the Heisenberg uncertainty principle 8f =/?/raoc 2 , the energy gain length, c5t is the Compton length K c .…”

Section: Nonlinear Qed and Horizon Physicsmentioning

confidence: 99%

Superstrong field science

Tajima¹,

Mourou²

2002

AIP Conference Proceedings

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Abstract. Over the past fifteen years we have seen a surge in our ability to produce high intensities, five to six orders of magnitude higher than was possible before. At these intensities, particles, electrons and protons, acquire kinetic energy in the mega-electron-volt range through interaction with intense laser fields. This opens a new age for the laser, the age of nonlinear relativistic optics coupling even with nuclear physics. We suggest a path to reach an extremely high-intensity level 10 26~28 W/cm 2 in the coming decade, much beyond the current and near future intensity regime 10 23 W/cm 2 , taking advantage of the megajoule laser facilities. Such a laser at extreme high intensity could accelerate particles to frontiers of high energy, tera-electron-volt and peta-electronvolt, and would become a tool of fundamental physics encompassing particle physics, gravitational physics, nonlinear field theory, ultrahigh-pressure physics, astrophysics, and cosmology. Such a laser intensity may also be very beneficial to an alternative, more direct approach of fast ignition in laser fusion. We suggest a new possibility to explore this.

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Observation of Nonlinear Effects in Compton Scattering

Cited by 605 publications

References 7 publications

Mott scattering of polarized electrons in a strong laser field

Mott scattering of polarized electrons in a strong laser field

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

Superstrong field science

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