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Tritium (from Ancient Greek τρίτος (trítos) 'third') or hydrogen-3 (symbol T or 3 H) is a rare and radioactive isotope of hydrogen with a half-life of ~12.3 years. The tritium nucleus (t, sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of the common isotope hydrogen-1 (protium) contains one proton and no neutrons, and that of non-radioactive hydrogen ...
Tritium (hydrogen-3) is a very low beta energy emitter that can be used to label proteins, nucleic acids, drugs and almost any organic biomolecule. The maximum theoretical specific activity of tritium is 28.8 kCi/mol (1,070 TBq/mol). [2]
Hydrogen (1 H) has three naturally occurring isotopes: 1 H, 2 H, and 3 H. 1 H and 2 H are stable, while 3 H has a half-life of 12.32(2) years. [3] [nb 1] Heavier isotopes also exist; all are synthetic and have a half-life of less than 1 zeptosecond (10 −21 s). [4] [5] Of these, 5 H is the least stable, while 7 H is the most.
Radiopharmaceuticals emit radiation themselves, ... Hydrogen-3. 3 H or tritium is a beta emitter. ... when treatment is also being attempted at the same time.
Tritium (hydrogen-3) is produced by neutron irradiation of 6 Li: 6 Li + n → 4 He + 3 H. Tritium has a half-life 4500 ± 8 days (approximately 12.32 years) [4] and it decays by beta decay. The electrons produced have an average energy of 5.7 keV. Because the emitted electrons have relatively low energy, the detection efficiency by ...
hydrogen-5: 86(6) lithium-4: 91(9) hydrogen-4: ... 3.3 carbon-8: 3.5 lithium-10m1: 3.7 ... hydrogen-3 (also known as tritium) 12.32 389 californium-250: 13.08
Even the lightest element, hydrogen, has a well-known radionuclide, tritium. Elements heavier than lead , and the elements technetium and promethium , exist only as radionuclides. Unplanned exposure to radionuclides generally has a harmful effect on living organisms including humans, although low levels of exposure occur naturally without harm.
Tritium is a low-energy beta emitter commonly used as a radiotracer in research and in traser [check spelling] self-powered lightings.The half-life of tritium is 12.3 years. The electrons from beta emission from tritium are so low in energy (average decay energy 5.7 keV) that a Geiger counter cannot be used to detect the