Erratum: Limitations on the Attainable Intensity of High Power Lasers [Phys. Rev. Lett.105, 080402 (2010)]

Optimized multibeam configuration for observation of QED cascades

“…[11] and [15]. Hence, in order to optimize field configuration for cascade production we must increase the coefficient at t 2 in the formula (5) as much as possible.…”

“…Another important example of ultra-strong field physics phenomena are quantum electrodynamical (QED) cascades [10][11][12][13][14][15]. In the present paper we consider cascades seeded by electrons, that are initially at rest at the focus of intense laser field 1 .…”

“…transverse with respect to the particle velocity v. In the framework of a locally constant field approximation [7,9,11] the parameter (1) evolves in between the hard photon emission and pair creation events according to the classical equations of motion and its instant value defines the probabilities of these processes [18] …”

Qed Processes in Intense Laser Fields

“…There remains some disagreement, though, on the conditions needed and the final particle yield. 18,19,20 …”

Streaking at high energies with electrons and positrons

“…(10) αξ i χ 1, while only in the opposite limit αξ i χ 1, the radiation dominated regime of multiphoton Compton scattering is entered [36,37]. Similarly, a cascade of pair production [38,39] can only be initiated for χ 1 if the interaction time τ i = 2πN i /ω i is much larger than the pair creation time τ e + e − ∼ ω t /αm 2 χ 2/3 [32], which yields αξ i N i /χ 1/3 1. But the opposite condition is fulfilled in the streaking regime and thus the pair production cascade is suppressed [40].…”