Fluorine-18

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Fluorine-18
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General
Name, symbol Fluorine-18, 18F
Neutrons 9
Protons 9
Nuclide Data
Natural abundance Radioisotope
Half-life 109.771(20) min
Decay products oxygen-18
Isotope mass 18.0009380(6) u
Spin 1+
Excess energy 873.431 ± 0.593 keV
Binding energy 137369.199 ± 0.593 keV
Decay mode Decay energy
Electron capture 1.656 MeV

Fluorine-18 is a fluorine radioisotope which is an important source of positrons. It has a mass of 18.0009380(6) u and its half-life is 109.771(20) min

Fluorine-18 is an important isotope in the radiopharmaceutical industry, and is primarily synthesized into FDG for use in Positron Emission Tomography (PET Scans). It is subsitituted for Hydrogen and used a tracer in the scan. Its significance is due to both its short half-life and the emission of positrons when decaying (PET being Positron Emission tomography). In the radiopharmaceutical industry, it is made using either a cyclotron or linear particle accelerator by bombarding oxygen-18 with hydrogen ions.