Breit-Wheeler process in intense short laser pulses

Krajewska, K.; Kamiński, J. Z.

doi:10.1103/physreva.86.052104

Cited by 109 publications

(79 citation statements)

References 42 publications

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“…The carrier envelope phaseφ is particularly important if it is comparable with the pulse duration . In IPA it is anyhow irrelevant; in FPA withφ the production probability would be determined by an involved interplay of the carrier phase, the pulse duration and pulse shape as well as the parameters ξ and ζ as emphasized, e.g., in [25,29,30]. In present work, we drop the carrier phase, thus assuminĝ φ , and concentrate on the dependence of the production probability on the parameters ξ and ζ together with pulse shape and pulse duration.…”

Section: A General Formalismmentioning

confidence: 97%

“…High laser intensities are presently achieved by the chirped pulse amplification resulting in short pulses. As shown for the Compton effect in [17][18][19][20][21][22] and for the Breit-Wheeler effect in [23][24][25][26] the pulse shape and the pulse duration become important. That means the treatment of the intense laser field as an infinitely long wave train is no longer adequate.…”

Section: Introductionmentioning

confidence: 97%

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Breit-Wheeler process in very short electromagnetic pulses

et al. 2013

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The generalized Breit-Wheeler process, i.e. the emission of $e^+e^-$ pairs off a probe photon propagating through a polarized short-pulsed electromagnetic (e.g.\ laser) wave field, is analyzed. We show that the production probability is determined by the interplay of two dynamical effects. The first one is related to the shape and duration of the pulse and the second one is the non-linear dynamics of the interaction of $e^\pm$ with the strong electromagnetic field. The first effect manifests itself most clearly in the weak-field regime, where the small field intensity is compensated by the rapid variation of the electromagnetic field in a limited space-time region, which intensifies the few-photon events and can enhance the production probability by orders of magnitude compared to an infinitely long pulse. Therefore, short pulses may be considered as a powerful amplifier. The non-linear dynamics in the multi-photon Breit-Wheeler regime plays a decisive role at large field intensities, where effects of the pulse shape and duration are less important. In the transition regime, both effects must be taken into account simultaneously. We provide suitable expressions for the $e^+e^-$ production probability for kinematic regions which can be used in transport codes.Comment: 32 pages, 15 figure

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Section: A General Formalismmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Breit-Wheeler process in very short electromagnetic pulses

et al. 2013

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“…Note that both quantities N eff and E tr are gauge invariant [59]. Moreover, N eff is Lorentz invariant for relativistically covariant processes.…”

Section: -4mentioning

confidence: 99%

Supercontinuum in ionization by relativistically intense and short laser pulses: Ionization without interference and its time analysis

Krajewska

Kamiński

2016

Phys. Rev. A

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Ionization by relativistically intense laser pulses of finite duration is considered in the framework of strongfield quantum electrodynamics. We show that the resulting ionization spectra change their behavior from the interference-dominated oscillatory pattern to the interference-free smooth supercontinuum, the latter being the main focus of this paper. More specifically, when studying the energy distributions of photoelectrons ionized by circularly polarized and short pulses, we observe the appearance of broad structures lacking the interference patterns. These supercontinua extend over hundreds of driving photon energies, thus corresponding to high-order nonlinear processes. Their positions on the electron energy scale can be controlled by changing the pulse duration. The corresponding polar-angle distributions show asymmetries which are attributed to the radiation pressure experienced by photoelectrons. Moreover, our time analysis shows that the electrons comprising the supercontinuum can form pulses of short duration. While we present the fully numerical results, their interpretation is based on the saddle-point approximation for the ionization probability amplitude.

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“…see Bulanov et al (2015) and literature cited therein). These effects manifest themselves through multi-photon Compton and Breit-Wheeler effects (Nikishov & Ritus 1964a,b;Ritus 1985) (see Narozhnyi & Fofanov (1996), Boca & Florescu (2009), Ehlotzky, Krajewska & Kamiśki (2009), Heinzl, Ilderton & Marklund (2010a), Heinzl, Seipt & Kämpfer (2010b, Mackenroth & Di Piazza (2011), Krajewska & Kamiński (2012), Titov et al (2012), Harvey, Heinzl & Ilderton (2009) for recent studies), i.e. through either photon emission by an electron or positron, or electron-positron pair production by a high energy photon, respectively.…”

Section: S V Bulanov and Othersmentioning

confidence: 99%

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

et al. 2017

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The multiple colliding laser pulse concept formulated by Bulanov et al. (Phys. Rev. Lett., vol. 104, 2010b, 220404) is beneficial for achieving an extremely high amplitude of coherent electromagnetic field. Since the topology of electric and magnetic fields of multiple colliding laser pulses oscillating in time is far from trivial and the radiation friction effects are significant in the high field limit, the dynamics of charged particles interacting with the multiple colliding laser pulses demonstrates remarkable features corresponding to random walk trajectories, limit circles, attractors, regular patterns and Lévy flights. Under extremely high intensity conditions the nonlinear dissipation mechanism stabilizes the particle motion resulting in the charged particle trajectory being located within narrow regions and in the occurrence of a new class of regular patterns made by the particle ensembles.

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Breit-Wheeler process in intense short laser pulses

Cited by 109 publications

References 42 publications

Breit-Wheeler process in very short electromagnetic pulses

Breit-Wheeler process in very short electromagnetic pulses

Supercontinuum in ionization by relativistically intense and short laser pulses: Ionization without interference and its time analysis

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

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