Lifting shell structures in the dynamically assisted Schwinger effect in periodic fields
arXiv:1412.0890 · doi:10.1016/j.physletb.2014.12.010
Abstract
The dynamically assisted pair creation (Schwinger effect) is considered for the superposition of two periodic electric fields acting a finite time interval. We find a strong enhancement by orders of magnitude caused by a weak field with a frequency being a multitude of the strong-field frequency. The strong low-frequency field leads to shell structures which are lifted by the weaker high-frequency field. The resonance type amplification refers to a new, monotonously increasing mode, often hidden in some strong oscillatory transient background which disappears during the smoothly switching off the background fields, thus leaving a pronounced residual shell structure in phase space.
References in corpus (10)
- The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
- Prolific pair production with high-power lasers
- Dynamically assisted Schwinger mechanism
- QED cascades induced by circularly polarized laser fields
- Momentum signatures for Schwinger pair production in short laser pulses with a sub-cycle structure
- Pair production in laser fields oscillating in space and time
- Optimization of Schwinger pair production in colliding laser pulses
- Electron-Positron Pair Production in Space- or Time-Dependent Electric Fields
- Schwinger effect in inhomogeneous electric fields
- Influence of Laser Pulse Parameters on the Properties of e-e+ Plasmas Created from Vacuum