Related by context. Frequent words. (Click for all words.) 63 laser pulses 60 scanning electron microscope 60 laser pulse 59 gamma rays 57 magnetic fields 57 ion beam 56 gamma ray 54 synchrotron 54 infrared wavelengths 54 gravitational lensing 54 laser beams 54 interferometer 54 femtosecond laser 54 ultraviolet light 53 electron beam 53 transmission electron microscope 53 X ray diffraction 53 photons 53 wavelengths 53 infrared laser 52 optical telescopes 52 spectroscopic 52 X ray crystallography 51 lasers 51 proton beam 51 laser beam 51 interferometry 51 fluorescence 51 diffraction 51 electron microscopy 51 spectroscopy 51 Raman spectroscopy 51 infrared 50 optical microscope 50 fluorescent dyes 50 neutrons 50 spectrometers 50 spatial resolution 50 imager 50 electromagnetic waves 50 proton beams 50 tomography 50 hydrogen atoms 50 particle accelerator 50 waveguides 50 femtosecond 49 infrared radiation 49 adaptive optics 49 atomic nuclei 49 microstructures 49 nanodiamonds 49 electron microscope 49 luminosity 49 cosmic rays 49 spectra 49 gravitational waves 49 particle accelerators 49 Fluorescence 49 photon 49 distant galaxies 49 optical telescope 49 protons 49 quasar 49 electron microscopes 49 nanocrystals 48 X ray 48 magnetic nanoparticles 48 XMM Newton 48 UV light 48 comet nucleus 48 Very Large Telescope 48 astronomers 48 electrons 48 infrared detectors 48 spectrophotometer 48 reflectance 48 laser 48 nuclei 48 particle 47 photodiodes 47 particles 47 fluorescent dye 47 excimer laser 47 spectrograph 47 imaging 47 magnification 47 quantum dots 47 positrons 47 microscopy 47 luminescence 47 CMEs 47 mass spectrometer 47 quantum dot 47 filaments 47 atoms 47 galaxy cluster 47 X ray imaging 47 phosphors 47 rays 47 galaxy clusters 47 nanometer sized