Pair production by Schwinger and Breit–Wheeler processes in bi-frequent fields

Otto, A.; Nousch, T.; Seipt, D.; Kämpfer, B.; Blaschke, D.; Panferov, A. D.; Smolyansky, S. A.; Титов, А. И.

doi:10.1017/s0022377816000428

Cited by 20 publications

(14 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast to the works on the bifrequent mechanism of vacuum EPP excitation [2,3] the present investigation has shown that the transition in the few photon area ensures in itself a high intensity of the EPP creation process without participation of the tunneling mechanism. This is the main result of this work.…”

Section: Resultscontrasting

confidence: 99%

Field induced phase transition in the few photon regime

et al. 2017

Self Cite

View full text Add to dashboard Cite

Abstract. Some features of the field induced phase transition accompanied by the vacuum creation of an electron-positron plasma (EPP) in strong time-dependent electric fields have been discussed in the work [1] in the domain of the tunneling mechanism (ω m, where ω is the characteristic frequency of the external field and m is the electron mass). In the present contribution the features of this process will be considered in the few photon domain where ω ∼ m. We observe a narrowing of the transient domain of the quickly oscillations and, mainly, a considerable growth of the effectiveness of the EPP production. Under these circumstances, we see an increase of the effectiveness of the EPP creation in the particular case of a bifrequent excitation, where both mechanisms (tunneling and few photon) act simultaneously [2,3].

show abstract

Section: Resultscontrasting

confidence: 99%

Field induced phase transition in the few photon regime

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Various aspects, such as the impact of the pulse envelope, pulse duration, and pulse polarization of e þ e − pair creation in single pulses were analyzed, e.g., in Refs. [20][21][22][23][24] with special emphasis on CEP effects [13,14], spin effects [25], bi-frequent pulses [26][27][28], spectral caustics [27], and focusing effects [29,30].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Breit-Wheeler process in short laser double pulses

Титов¹,

Takabe

Kämpfer

2018

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

The nonlinear (strong-field) Breit-Wheeler e þ e − pair production by a probe photon traversing two consecutive short and ultrashort (subcycle) laser pulses is considered within a QED framework. The temporal shape of the pulses and the distance between them are essential for the differential cross section as a function of the azimuthal angle distribution of the outgoing electron (positron). The found effect of a pronounced azimuthal anisotropy is important for subcycle pulses and decreases rapidly with increasing width of the individual pulses.

show abstract

“…Our paper is organized as follows. Section 2 deals with the laser assisted Breit-Wheeler process, where spectral caustics have been identified already in [17,18]. Specifically, we deliver here as new result the phase space distribution of positrons, in particular the double-differential cross section as a function of longitudinal and transverse momenta.…”

Section: Introductionmentioning

confidence: 97%

Laser Assisted Breit-Wheeler and Schwinger Processes

Nousch

Otto

Seipt

et al. 2016

New Horizons in Fundamental Physics

Self Cite

View full text Add to dashboard Cite

The assistance of an intense optical laser pulse on electron-positron pair production by the Breit-Wheeler and Schwinger processes in XFEL fields is analyzed. The impact of a laser beam on high-energy photon collisions with XFEL photons consists in a phase space redistribution of the pairs emerging in the Breit-Wheeler sub-process. We provide numerical examples of the differential cross section for parameters related to the European XFEL. Analogously, the Schwinger type pair production in pulsed fields with oscillating components referring to a superposition of optical laser and XFEL frequencies is evaluated. The residual phase space distribution of created pairs is sensitive to the pulse shape and may differ significantly from transiently achieved mode occupations.

show abstract

Pair production by Schwinger and Breit–Wheeler processes in bi-frequent fields

Cited by 20 publications

References 49 publications

Field induced phase transition in the few photon regime

Field induced phase transition in the few photon regime

Nonlinear Breit-Wheeler process in short laser double pulses

Laser Assisted Breit-Wheeler and Schwinger Processes

Contact Info

Product

Resources

About