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Carbon-11 or 11 C is a radioactive isotope of mass 11 of the element carbon, which has a half-life of about 20, 5 minutes decays to boron-11. The atomic nucleus of the nuclide is made up of 5 neutrons and the 6 element-specific protons.
Carbon-11 or 11 C is a radioactive isotope of carbon that decays to boron-11. This decay mainly occurs due to positron emission, with around 0.19–0.23% of decays instead occurring by electron capture. [6] [7] It has a half-life of 20.3402(53) min. 11 C → 11 B + e + + ν e + 0.96 MeV 11 C + e − → 11 B + ν e + 1.98 MeV
Carbon-11. The carbon isotope C-11 is used as a radioisotope in positron emission tomography: [11 C]DASB and others. Carbon-14. C-14 - also known as radiocarbon - is the radioactive carbon isotope contained in small traces (1:1 trillion) in natural carbon.
Show only decays with probability >0.1%. Click any isotope in diagram to see its data. Detailed decay information for the isotope carbon-11 including decay chains and daughter products.
3 kwi 2019 · This can easily be understood by considering that the ratio between the total mass of a 11 C-labeled precursor (carbon-12 and carbon-11) and the precursor for labeling typically is in the order of 1/100.
isotopes. The total number of protons and neutrons (Z + N) in a given isotope is called the mass number. Isotopes may be stable or unstable. The unstable isotopes are also called radio-isotopes and will decay over time into another isotope of the same or a different element.
31 paź 2014 · The carbon-11 isotope is most widely produced by the proton bombardment of nitrogen-14 in a gas phase cyclotron target. 11 CO 2 is the most widely produced in target C-11 primary precursor. Methylation reactions are commonly used for the production of many of the key 11 C-tracers.
