What type of radiation is used in radioactive dating
Electron capture occurs when one of the inner electrons in an atom is captured by the atom’s nucleus.
For example, potassium-40 undergoes electron capture: Electron capture occurs when an inner shell electron combines with a proton and is converted into a neutron.
The loss of an inner shell electron leaves a vacancy that will be filled by one of the outer electrons.
As the outer electron drops into the vacancy, it will emit energy.
Electron capture has the same effect on the nucleus as does positron emission: The atomic number is decreased by one and the mass number does not change.
This increases the n:p ratio, and the daughter nuclide lies closer to the band of stability than did the parent nuclide.
Consequently, the n:p ratio is decreased, and the daughter nuclide lies closer to the band of stability than did the parent nuclide.To perform a PET scan, a positron-emitting radioisotope is produced in a cyclotron and then attached to a substance that is used by the part of the body being investigated.This “tagged” compound, or radiotracer, is then put into the patient (injected via IV or breathed in as a gas), and how it is used by the tissue reveals how that organ or other area of the body functions. A PET scanner (a) uses radiation to provide an image of how part of a patient’s body functions.We classify different types of radioactive decay by the radiation produced. Alpha particles, which are attracted to the negative plate and deflected by a relatively small amount, must be positively charged and relatively massive.Beta particles, which are attracted to the positive plate and deflected a relatively large amount, must be negatively charged and relatively light.