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(Click for frequent words.) 80 isotopes 68 radioisotopes 62 technetium #m 61 radioactive isotope 60 radioisotope 60 medical isotopes 58 radioactive isotopes 57 element osmium 56 isotopic 55 technetium 54 fissionable uranium 54 radionuclide 54 technetium #m Tc #m 54 superheavy element 53 isotope molybdenum 53 californium 52 Technetium 52 Tc #m 51 uranium 51 isotope technetium 51 radioactive 50 rubidium 50 isotope shortage 50 osmium 50 Petten reactor 50 Nordion 50 ion beam 50 nuclide 50 neutron 50 neutrons 50 spontaneous fission 50 radioactive substance 50 radioactive decay 49 isotope reactor 49 iridium 49 Technetium #m 49 neighboring prefectures Chiba 49 uranium ores 49 emits gamma rays 49 antineutrino 49 nonradioactive 49 fissionable 49 cobalt 48 Cesium 48 uranium dioxide 48 radioiodine 48 neutron beams 48 sulfur isotope 48 neutrino experiments 48 actinides 48 radionuclides 48 neutron beam 48 chemically indistinguishable 47 isotope ratios 47 tellurium 47 uranium oxide 47 nuclides 47 NRU reactor 47 Lantheus 47 radioactive tracers 47 noble gases 47 accelerator mass spectrometry 47 fissile isotope 47 U Th 47 absorb neutrons 47 calcium fluoride 47 Isotope 47 MDS Nordion 47 catalytically active 47 Tc 47 Molybdenum 47 tritium 46 cesium 46 MAPLEs 46 Plutonium 46 americium 46 uranium thorium 46 actinide 46 medical radioisotopes 46 keV 46 UF6 46 gallium 46 cited krypton strontium 46 curies 46 molybdenum 46 martian meteorites 46 CANDU reactors 46 apatite 46 hafnium 46 reactor 46 ultrashort pulses 46 positron emitting 46 Chalk River 46 astatine 46 HEU 46 NanoSIMS 46 alpha emitter 46 AECL Chalk River 46 stable isotope 46 lanthanides 45 isotopic compositions 45 magnetic resonance spectroscopy 45 Higgs bosons 45 deuterium 45 B mesons 45 rhenium Re 45 magnetic resonance NMR spectroscopy 45 NSCL 45 samarium 45 olivine 45 bismuth 45 radioactivity 45 cosmogenic 45 AECL 45 radioactive material 45 photon energies 45 alpha particles 45 zircons 45 selenomethionine 45 cosmic ray 45 electron neutrinos 45 cyclotron 45 dysprosium 45 isotope fractionation 45 rhenium 45 promethium 45 laser irradiation 45 synchrotron 45 iodine 45 technitium 45 polonium 45 fluorescence spectroscopy 45 radiolabeling 45 KamLAND 45 radium 45 Henri Becquerel 45 X ray spectrometer 45 carbon isotopes 45 hydrogen isotopes 45 cerium 44 enriched uranium 44 primitive meteorites 44 fission reactor 44 solar neutrinos 44 perovskite 44 LENR 44 quantum oscillations 44 isotope technetium #m 44 dopant 44 gamma rays emitted 44 germanium 44 moly 44 muon 44 Becquerel 44 semiconducting materials 44 QCLs 44 oxygen isotope 44 alkali metal 44 radiotracer 44 chondrites 44 positron 44 sulfur isotopes 44 biomineralization 44 X ray beam 44 Iodine 44 nuclei 44 reprocessed uranium 44 antihelium 4 44 Bismuth 44 Mitochondrial DNA testing 44 hyperpolarization 44 polaritons 44 tungsten 44 transuranic 44 CANDU 44 Neutron Source 44 neutron radiation 44 x ray beams 44 plutonium oxide 44 beryllium oxide 44 laser excitation 44 thorium 44 photoemission 44 beryllium 44 electron beams 44 iron arsenide 44 isotopic composition 44 synchrotron X ray 44 3He 44 biosignature 44 Martian meteorites 44 zirconium 44 geoneutrinos 43 dopants 43 highly enriched uranium 43 fission reactions 43 TRIUMF 43 CAIs 43 isotopic fractionation 43 neutron activation analysis 43 tin Sn 43 cuprate 43 ferric iron 43 post perovskite 43 radiochemical 43 uranium enriched 43 formate 43 radiopharmaceuticals 43 strange quark 43 radioactive cobalt 43 ceria 43 fluorescence spectra 43 Radioisotope 43 formamide 43 Nd 43 Germanium 43 sterile neutrino 43 zirconium Zr 43 Polonium 43 polyphosphates 43 krypton 43 W bosons 43 THz radiation 43 boron 43 indium 43 fissionable uranium isotope 43 fuel rods 43 Lantheus Medical Imaging 43 alpha emitting 43 fission 43 radiopharmaceutical 43 attosecond 43 synchrotron radiation 43 thulium 43 cuprate superconductors 43 cyclotrons 43 Caesium 43 isotopic ratios 43 strange quarks 43 Rubidium 43 plutonium 43 helium atoms 43 PET scanners 43 nanomagnets 43 atomic 43 cuprates 43 ytterbium 43 radiation 43 ARPES 43 enriched uranium HEU 43 geochemists 43 chemically reactive 43 MAPLE reactors 43 chondritic meteorites 43 fission reactors 43 ion beams 43 electron 43 irradiators 43 fluorine 43 germanium antimony 43 Uranium 43 electron spin 43 niobium 43 atom 42 femtosecond pulses 42 copper oxide superconductors 42 fermion 42 optical spectroscopy 42 neutrino 42 Mott insulator 42 neutrino beam 42 REEs 42 neutron scattering 42 basaltic rocks 42 demineralized water 42 gamma emitting 42 Cosmic Microwave Background CMB 42 anorthosite 42 magnetic excitations 42 Synchrotron 42 Lutetium 42 PrP 42 electron beam 42 Super Kamiokande 42 carbonatites 42 electrical resistivity 42 phyllosilicate 42 naturally occurring radioactive 42 ppm U 42 copper oxides 42 muon neutrinos 42 photochemical reactions 42 supersymmetric particles 42 alpha particle 42 isotopic measurements 42 alkali metals 42 absorption spectra 42 helium ions 42 spectroscopic analysis 42 titanium dioxide nanoparticles 42 uranium hexafluoride 42 zeolites 42 radioactive nuclides 42 strontium 42 chlorophyll molecule 42 sulfate 42 Candu reactors 42 sonofusion 42 LEU 42 naturally occurring isotope 42 neutron absorbing 42 monochromator 42 ActLabs 42 quasicrystal 42 olivines 42 atomic nuclei 42 antineutrinos 42 Karlseder 42 CANDU reactor 42 radioactive substances 42 neutrino particles 42 meteoritic material 42 neodymium Nd 42 neutron detectors 42 nitrogenase 42 magnetic resonance NMR 42 Pääbo 42 Hawking radiation 42 glass microspheres 42 HFIR 42 phytochrome 42 mtDNA 42 #m Tc 42 X ray pulses 42 ab initio calculations 42 m z 42 Zircatec 42 Tl 42 FTIR spectroscopy 42 phonon 42 photon 42 Cameco 42 rubidium vapor 42 cobalt atom 42 Rydberg atom 42 Nanoprobe 42 Oklo 42 deuterium oxide 42 photosystem 42 spectroscopic 42 photon beams 42 nuclear reactors 42 tantalum 42 acetonitrile 42 mineralogy 42 neutron irradiation 42 zinc sulfide 42 metallicity 42 oxidized mercury 42 W boson 42 Europium 42 hyperfine 42 low enriched uranium 42 Bose Einstein condensates 42 accelerator mass spectrometer 41 Synchrotron radiation 41 beamline #.#.# 41 thorium reactor 41 nickel alloy 41 electrochemical 41 corundum 41 Depleted uranium 41 polarized electrons 41 multiphoton 41 YBCO 41 neptunium 41 spinel 41 organophosphate exposure 41 hydroxide ions 41 neutron activation 41 femtosecond laser pulses 41 picocurie 41 uranium ore 41 photoluminescence 41 thallium 41 SNOLAB 41 synchrotron x ray 41 proton proton collisions 41 silicate mineral 41 superalloy 41 Z bosons 41 Dauphas 41 fermionic 41 zircon 41 radioactive strontium 41 electric dipole 41 potassium iodine 41 synchrotrons 41 spectroscopic technique 41 berkelium 41 FLT PET 41 stony meteorites 41 antiparticles 41 hydrogen isotopes deuterium 41 neutron flux 41 proton neutron 41 ESRF 41 barium sulfate 41 lithium hydride 41 meson 41 dinitrogen 41 radiotracers 41 Tantalum 41 Radioactive isotopes 41 carbonaceous chondrites 41 vanadium 41 spectrometry 41 UO2 41 helium atom 41 gDNA 41 magnetic anisotropy 41 chemiluminescence 41 colloid 41 radioisotope thermoelectric generators 41 NITON 41 paramagnetic 41 helium nuclei 41 CMB radiation 41 millicuries 41 Isotopic 41 aerosol particles 41 gamma radiation 41 mildly radioactive 41 curium 41 Raman spectroscopy 41 Neutron scattering 41 inhomogeneities 41 Tellurium 41 radioactive cesium 41 fissioning 41 photoionization 41 entangled photons 41 Sudbury Neutrino Observatory 41 ferroelectricity 41 dosimetry 41 pulsed lasers 41 methane CH4 41 Thallium 41 Tonoyan suggested 41 OPAL reactor 41 oxygen isotopes 41 eclogitic 41 XRF analysis 41 backscattering 41 mass spectrometer 41 superheavy elements 41 ncRNA 41 element iridium 41 sarcosine 41 spectroscopic techniques 41 proton decay 41 luminescence dating 41 tetroxide 41 hydrous 41 oxygenic photosynthesis 41 isotope ratio 41 ionizing 41 neutrons emitted 41 muons 41 nanopowders 41 electroactive 41 CdSe 41 flow cytometers 41 Roentgen 41 Yttrium 41 magnetic dipole 41 atoms 41 platinum Pt 40 VHE gamma rays 40 sestamibi 40 isotopic analysis 40 nuclear fission reactors 40 axions 40 atmospheric aerosols 40 hydrogen deuterium 40 reactor fuel rods 40 molybdenum Mo 40 niobium Nb 40 TiO2 nanoparticles 40 iodine cesium 40 absorbance 40 pseudogap phase 40 elastic moduli 40 diode laser 40 water soluble vitamin 40 chondrite 40 electron volt 40 phenanthrene 40 carbon isotope 40 peridotitic 40 ionizing radiation 40 reactors 40 microwave radiation 40 gamma rays 40 lithium tantalum cesium 40 thermal decomposition 40 myo inositol 40 X ray binaries 40 meteorite fragments 40 wavelengths 40 ammonium 40 Petrographic 40 Geochronology 40 radioactive wastes 40 pseudogap 40 hemoglobins 40 wavefunction 40 electron density 40 lanthanide 40 electron accelerator 40 MoS2 40 sulfide 40 antiparticle 40 kT 40 metalloproteins 40 ultrafast lasers 40 cometary material 40 metallic ions 40 gamma irradiator 40 x ray beam 40 neutrino oscillation 40 metastable 40 ultraviolet wavelengths 40 scanning electron microscopes 40 ferric oxides 40 physicists 40 graphitic carbon 40 uranyl 40 wavelength 40 scanning tunneling microscopy 40 analyte 40 Accurassay 40 electron accelerators 40 emitting radiation 40 isomeric 40 shear modulus 40 subatomic particle 40 photons 40 positrons 40 purity silicon 40 gamma ray 40 radioactive thorium 40 graphite whiskers 40 coral skeletons 40 X ray emission 40 uranium deuteride 40 nanolaser 40 radioactive tracer 40 kaons 40 scintillator 40 Chlamydomonas reinhardtii 40 chlorophyll fluorescence 40 amniotic cells 40 coronal loop 40 spectroscopy 40 sodium fluoride 40 radiogenic 40 deuterium tritium 40 mass spectroscopy 40 radioactive waste 40 Gamma rays 40 ALH# 40 magma ocean 40 cosmic rays 40 GeV 40 silicon dioxide SiO2 40 radiocarbon 40 Source synchrotron 40 spectroscope 40 Fluorine 40 superlens 40 nanoprobes 40 strontium cesium 40 depleted uranium 40 vitamin K1 40 NMR spectra 40 barium titanate 40 gallium indium 40 MWNT 40 Pol IV 40 hematite mineral 40 eBx 40 nanoclusters 40 essential micronutrient 40 gamma ray radiation 40 atmospheric CO 40 electron spectroscopy 40 cerium Ce 40 plasmon 40 sodium salts 40 perchlorates 40 scorpion toxin 40 fossil 40 oxide nanowires 40 dipole moment 40 Somatic cell 40 sulphite 40 ppm uranium 40 tantalum niobium 40 radioactive nuclei 40 monazite 40 ruthenium 40 laser desorption 40 mineralized boulders 40 metallic nanotubes 40 lavas 40 uranium hexaflouride 40 tau neutrinos 40 hexafluoride 40 erbium 40 x ray pulses 40 atmospheric methane 40 Carbon Dioxide ERC 40 lunar regolith 40 Raman spectroscopic 40 hydrogens 40 hydrogen nuclei 40 quasiparticle 40 Fourier transform infrared spectroscopy 40 yttrium 40 hydrogen 40 dipolar 40 biotite rich 40 macromolecule 40 inhomogeneous 40 cyanuric acid melamine 40 antiferromagnetic 40 photosynthetically 40 optical emission spectroscopy 40 electron pairing 40 situ hybridisation FISH 40 nitrogen isotopes 40 cuvette 40 Holmium 40 xenon 40 x ray diffraction 40 decoherence 40 Petten 40 boron oxide 40 diffraction pattern 40 radioactive byproducts 40 lanthanum La 40 absorption spectroscopy 40 biocompatible nanoparticles 40 photoacoustic 40 interferometers 40 AGNs 40 zircon crystals 40 fission fusion 40 δ 40 Willerslev 40 torsional oscillator 40 HREE 40 carbonate globules 40 radioactive isotope cesium 40 absorbs neutrons 40 brachytherapy seed 40 Ruthenium 40 quantum tunneling 40 Isotope shortage 40 deuterium nuclei 40 neodymium 40 cytochromes 39 deuterium hydrogen 39 germanium laser 39 gamma sterilization 39 gamma ray emission 39 photons particles 39 Ralf Gellert 39 scintillators 39 Deuterium 39 Wilhelm Roentgen 39 phosphorus atoms 39 electron volts eV 39 thorium reactors 39 beta cyclodextrin 39 LINAC 39 CHALK RIVER 39 nanosized 39 Raman spectra 39 metals beryllium 39 laser ablation 39 nutrients iodine 39 terahertz rays 39 thermoelectric materials 39 nitrogen isotope 39 marine sediments 39 oligonucleotide probes 39 basalts 39 Ytterbium 39 Alum Shale 39 aluminate 39 pentacene molecule 39 Oganessian 39 spectrometer 39 emission spectroscopy 39 radioactive iodine 39 electron neutrino 39 absorbs ultraviolet 39 ATRP 39 fissile materials 39 Cogema 39 LREE 39 zinc ions 39 γ 39 matter antimatter asymmetry 39 thorium uranium 39 laser pulses 39 hydrofluoric acid 39 Borexino 39 DSSCs 39 Nd YAG 39 radioactively 39 enriched UF6 39 krypton atoms 39 High Flux Isotope 39 Laboratory NSCL 39 amphibole 39 silicate minerals 39 Ray Spectrometer 39 maraging steel 39 mesoporous 39 nanostructured silicon 39 alpha emitters 39 Radiocarbon 39 microdiamond 39 emits photons 39 Mitochondrial DNA 39 anisotropy 39 particle collisions 39 ZrO 2 39 chondrules 39 Curies 39 carbides 39 trimers 39 Ceradyne Boron Products 39 uraninite 39 positron emission 39 gamma ray detectors 39 isotopic signature 39 nanotubes nanowires 39 copper indium 39 detect gamma rays 39 undiscovered particle 39 physicist Wilhelm Roentgen 39 methylamine 39 Xavier Delfosse 39 Amniotic fluid 39 metasomatic 39 Calcium carbonate 39 isotope deuterium 39 muon neutrino 39 neutrino experiment 39 Kanatzidis 39 Indium 39 photon counting 39 matrix interferences 39 supersolid 39 UF6 gas 39 komatiites 39 agarose gel 39 APXS 39 alloy 39 boron atoms 39 lutetium 39 evaporite 39 3 O8 39 oxygen atom 39 antiproton 39 laser pulse 39 radioactive iodide 39 oocyte 39 photoemission spectroscopy 39 isomers 39 Martian meteorite 39 geologic repository 39 cerium oxide 39 dihydrogen 39 yttrium barium copper 39 carbonate minerals 39 cathode materials 39 Dysprosium 39 magnetite crystals 39 lithium tantalum 39 strontium titanate 39 microcrystals 39 U#O# 39 x ray crystallographic 39 Shao Horn 39 terabecquerel 39 aliquots 39 AB Aurigae 39 nanometric 39 transfer FRET 39 X ray fluorescence 39 geochronology 39 SPECT 39 ADMD 39 spin Seebeck 39 ion collisions 39 RRATs 39 radial velocity method 39 plutonium americium 39 FUS protein 39 force microscopes AFMs 39 heterostructures 39 Photoemission 39 situ measurements 39 ANSTO 39 oxide 39 elemental composition 39 colliders 39 Americium 39 FDG 39 femtogram 39 entangled photon 39 boson 39 exoplanetary systems 39 iron oxide 39 zeolite 39 radioactive tritium 39 optical atomic clocks 39 CFTR cystic fibrosis transmembrane 39 crystalline silicates 39 mitochondrial genome 39 Jean Luc Urbain 39 ultracold polar molecules 39 electron scattering 39 oxygen isotope ratios 39 proton pump 39 uranium hexaflouride gas 39 zinc indium 39 femtoseconds 39 dynamin 39 MHz NMR 39 nuclear reactor 39 chirality 39 lunar soil 39 fig. S2 39 radioactive materials 39 delocalized 39 parahydrogen 39 kilotonne 39 chemical reactants 39 reagent 39 terahertz 39 vanadate 39 helium isotopes 39 vanadium oxide 39 roentgen 39 potassium thorium 39 rems 39 proton 39 millimeter wavelength 39 electron affinities 39 proton antiproton collisions 39 OPG 39 reactor coolant 39 photoelectron 39 sulfide ores 39 Enriching uranium 39 powder diffraction 39 Neoproterozoic 39 nickel Ni 39 Mass spectrometry 39 terbium 39 ferromagnetism 39 supernatant 39 SWCNT 39 SAXS 39 galactic cosmic rays 39 Terbium Tb 39 dermal papilla cells 39 Ekaterina Dadachova 39 oxide particles 39 nitrides 39 argon fluoride 39 titanium zirconium 39 silicon atoms 39 Murchison meteorite 39 intermolecular interactions 39 attosecond pulses 39 crystal lattices 39 crystal lattice 39 photon fluorescence 39 silicon 39 microscopic beads 39 nanotubes 39 lanthanum strontium 39 blackbody 39 superconducting 39 spintronic devices 39 electron microprobe 39 helium 39 Tagish Lake meteorite 39 μm 39 nanorod 39 deuterium atoms 39 Slukvin 39 copper Cu 39 irradiate 39 metalloid 39 missing baryons 39 silicate rocks 39 hormone receptors 39 type Ia supernova 39 semiconductor nanowires 39 supercritical fluid 39 nanoparticle toxicity 39 krypton gas 39 unconventional superconductivity 39 boron nitride 39 peroxynitrite 39 spectral measurements 39 chromatographic techniques 39 carbene 39 walled carbon nanotube 38 NIAID Rocky Mountain 38 PSR J# 38 tritium contamination 38 quantum cascade lasers 38 pyrochlore 38 titanium sapphire 38 stimulated emission 38 iron oxides 38 carbonatite dykes 38 microfocus X ray 38 nonlinear optical 38 swallowing radioactive iodine 38 exoplanetary 38 nanoantennas 38 surface plasmons 38 Candu 38 potassium feldspar 38 particle accelerators 38 Fischer Tropsch synthesis 38 thermally activated 38 microscopic crystals 38 fusion fission 38 carbonization 38 TheraSphere 38 molecular spectroscopy 38 heavy fermion 38 nonthermal 38 particle acceleration 38 Cygnus X 38 Fourier transform infrared FTIR 38 AECL reactor 38 plastid 38 spectrographs 38 bastnasite 38 microbial nanowires 38 Inductively Coupled Plasma 38 ultrashort laser pulses 38 Muons 38 mesons 38 plutonium dioxide 38 hydroxyl molecules 38 Bose Einstein condensate 38 D#G 38 MiniBooNE 38 Ferritin 38 GPa 38 contaminant 38 Tc superconductors 38 spallation 38 anions 38 magnetic fields 38 stabilized zirconia 38 elemental mercury 38 irradiated 38 uranium centrifuge 38 Monazite 38 Mg Fe 38 unoxidized 38 hydrogenase 38 X ray diffraction pattern 38 Nuclear fission 38 embryo clones 38 microdiamonds 38 magmatic 38 Trichodesmium 38 Optix MX3 38 nm wavelength 38 electron doped 38 carnallite 38 photonic crystal fiber 38 ionization 38 sterile neutrinos