Prediction of lightning inception by large ice particles and extensive air showers
Physical Review Letters , Volume 115 - Issue 1
We derive that lightning can start if the electric field is 15% of the breakdown field, and if elongated ice particles of 6 cm length and 100 free electrons per cm3 are present. This is one particular example set from a parameter range that we discuss as well. Our simulations include the permittivity ε(ω) of ice. 100 free electrons per cm3 exist at 5.5 km altitude in air showers created by cosmic particles of at least 5×1015 eV. If the electric field zone is 3 m high and 0.2 km2 in the horizontal direction, at least one discharge per minute can be triggered. The size distribution of the ice particles is crucial for our argument; more detailed measurements would be desirable.
|Energy (theme 4)|
|American Physical Society|
|Physical Review Letters|
|This work was funded by the The Netherlands Organisation for Scientific Research (NWO); grant id nwo/12PR3041-2 - Cosmic Lightning|
A. Dubinova, A, Rutjes, C, Ebert, U, Buitink, S, Scholten, O, & Trinh, T.N.G. (2015). Prediction of lightning inception by large ice particles and extensive air showers. Physical Review Letters, 115(1). doi:10.1103/PhysRevLett.115.015002