product: ICEPIC
Improved Concurrent Electromagnetic Particle In Cell Simulations
generation of RF radiation by femtosecond atmospheric filaments
- Atmospheric filaments are famous as sources of THz radiation, which was hard to produce and detect until recent decades.
- Recent experimental work at the AFRL has detected and characterized the GHz RF radiation that is also produced by filaments.
- The existing theories that explain the production of THz radiation do not explain the distinct RF radiation: a new physical mechanism must be responsible.
- In our model, the expansion of a hot outer shell of electrons from the plasma column drives longitudinal currents that generate the RF
