When a high-energy high-intensity laser pulses are focused on targets, very high electromagnetic pulses (EMP) may be generated, with the electric fields that may reach hundreds of kV/m in vicinity of the target. Such pulses pose very serious problems for a reliable operation – or even survival – of diagnostic devices relying on electronics. Unfortunately, our knowledge about EMP generation is still incomplete. This problem is becoming timely and urgent since in near future several such laser systems in Europe would go online: PETAL and Apollon in France, ELI lasers in Czech Republic, Romania and Hungary, the VEGA system in Spain, and others.
To tackle the issue of EMP we need to collect and compare experimental data on EMP from several laser facilities; develop theoretical models and numerical codes allowing to reproduce the existing data and extrapolate them to pulse energies and intensities beyond what is currently available; and develop approaches to mitigate the EMP emission and reduce any impact it might have on data collection. For these reasons a one-day informal workshop was held at CELIA, Bordeaux, in March 2016, devoted to strong electromagnetic pulses generated through laser-matter interactions at high laser energy and high intensity, attended by scientists from various European laboratories: CELIA, CESTA, Rutherford Appleton Laboratory, PALS, ENEA Frascati, CLPU Salamanca, and others. A one-day meeting in Warsaw is intended as a follow-up to the Bordeaux meeting and would have similar scope, extended somewhat to encompass phenomena closely related to EMP, namely the extreme laser-induced currents and ultra-strong quasi-static fields.
Organizers: CELIA - D. Batani, V. Tikhonchuk; IPPLM - P. Raczka, M. Rosinski