QED information

Description

iSLIPs supports nonlinear Compton scattering, nonlinear Breit-Wheeler pair production, and vacuum birefringence in the local-constant-field-approximation (LCFA).

Options

qedInfo block is used to the define the QED simulations with definitions:

• use_qed: enable or not the QED (nlcs && nbw && vb)
• producePair: if use_qed = True, whether turn on/off the pair production
• laser_lambda: a reference wavelength in SI to normalize the field intensity, length, time, etc.
• photonDynamics: whether export photons
• usePolarization: whether considering the photon polarization in radiation and pair conversion
• useAvgPolarization: whether use the average polarization for each photon calculated by formula (will not use the Monte Carlo method)
• useRadiationReaction: whether considering the radiation reaction force or not
• photonCutOff: in the units of electron rest mass, used to exclude low energy photons, therefore to accelerate simulations.
• useVacuumBirefringence: whether turn on/off the VB effect for high energy photons via the evolution of Stokes parameters.

Template

[qedInfo] 
use_qed = false
producePair = false
laser_lambda = 1.0e-6
photonDynamics = true
usePolarization = true
useAvgPolarization = false
useRadiationReaction = true
photonCutOff = 0.01
useVacuumBirefringence = false