Atoms 77 Atoms and Molecules in Strong Fields, Laser Matter Interaction 77 Physics 77 Plasma (Ionized gases) 46 Plasma Physics 46 Lasers 23 Optics, Lasers, Photonics, Optical Devices 23 more ... Photonics 23 Astrophysics 17 Astrophysics and Astroparticles 14 Classical Electrodynamics 14 Electrodynamics 14 Optics 14 Atomic, Molecular, Optical and Plasma Physics 12 Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) 9 Space sciences 9 Nuclear Energy 8 Nuclear energy 8 Nuclear physics 8 Fluid- and Aerodynamics 7 Fluids 7 Heavy ions 6 Nuclear Fusion 6 Nuclear Physics, Heavy Ions, Hadrons 6 Nuclear fusion 6 Physical Chemistry 6 Physical chemistry 6 Astronomy 5 Astronomy, Astrophysics and Cosmology 5 Materials—Surfaces 5 less ...