Enhanced Subthreshold ${e}^{\mathbf{+}}{e}^{\mathbf{\ensuremath{-}}}$ Production in Short Laser Pulses

Enhanced Subthreshold $e^{+} e^{-}$ Production in Short Laser Pulses

A. I. Titov, H. Takabe, B. Kämpfer, and A. Hosaka

Phys. Rev. Lett. 108, 240406 – Published 15 June 2012

Abstract

The emission of $e^{+} e^{-}$ pairs off a probe photon propagating through a polarized short-pulsed electromagnetic (e.g., laser) wave field is analyzed. A significant increase of the total cross section of pair production in the subthreshold region is found for decreasing laser pulse duration even in the case of moderate laser pulse intensities.

Received 30 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.240406

Authors & Affiliations

A. I. Titov^1,2,3, H. Takabe¹, B. Kämpfer^3,4, and A. Hosaka⁵

¹Institute of Laser Engineering, Yamada-oka, Suita, Osaka 565-0871, Japan
²Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna 141980, Russia
³Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
⁴Institut für Theoretische Physik, TU Dresden, 01062 Dresden, Germany
⁵Research Center of Nuclear Physics, 10-1 Mihogaoka Ibaraki, 567-0047 Osaka, Japan

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Vol. 108, Iss. 24 — 15 June 2012

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Physical Review Letters

Enhanced Subthreshold e+e− Production in Short Laser Pulses

A. I. Titov, H. Takabe, B. Kämpfer, and A. Hosaka

Phys. Rev. Lett. 108, 240406 – Published 15 June 2012

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Enhanced Subthreshold $e^{+} e^{-}$ Production in Short Laser Pulses