Ion composition and chemistry

Physics & Astronomy

• coma 100%
• Halley's comet 74%
• chemistry 70%
• mass spectrometers 68%
• polycyclic aromatic hydrocarbons 61%
• solar nebula 46%
• ions 38%
• polymers 38%
• ice 32%
• radio observation 20%
• formaldehyde 20%
• helium ions 19%
• sublimation 18%
• agglomeration 17%
• budgets 17%
• molecules 17%
• gases 16%
• ammonia 16%
• water vapor 16%
• cosmic rays 14%
• condensation 14%
• derivation 13%
• nitrogen 12%
• carbon 10%
• nuclei 10%
• irradiation 10%
• hydrogen 10%
• probes 9%
• estimates 9%

Engineering & Materials Science

• Ions 75%
• Polycyclic aromatic hydrocarbons 70%
• Chemical analysis 53%
• Polymers 48%
• Mass spectrometers 46%
• Ice 33%
• Molecules 32%
• Cosmic rays 24%
• Sublimation 23%
• Gas fuel measurement 23%
• Formaldehyde 20%
• Helium 18%
• Water vapor 18%
• Ammonia 17%
• Irradiation 16%
• Condensation 16%
• Nitrogen 15%
• Agglomeration 14%
• Hydrogen 13%
• Carbon 12%
• Uncertainty 10%
• Gases 9%
• Experiments 5%

Earth & Environmental Sciences

• comet 53%
• ion 52%
• polymer 50%
• PAH 42%
• spectrometer 27%
• condensation (process) 23%
• ice 22%
• parent body 20%
• sublimation 19%
• cosmic ray 18%
• helium 17%
• formaldehyde 17%
• gas 16%
• agglomeration 16%
• rate 16%
• relative abundance 15%
• irradiation 14%
• radio 14%
• budget 13%
• water vapor 13%
• probe 13%
• ammonia 13%
• hydrogen 12%
• nitrogen 9%
• carbon 9%
• experiment 6%