Electrodeless 1 Electromagnetic pulse 1 Experimental evidence 1 Femtosecond lasers 1 Femtosecond pulse laser 1 Gas chromatographs 1 Gas emissions 1 H 2 production Harmful gas 1 Hydrogen production 1 Ionization of gases 1 Ionization potential 1 Laser pulses 1 MPI (multi-photon ionization) 1 Photoionization 1 Production rates 1 Seawater 1 Ultra-pure water 1 Water splitting 1