G

• Gamma rays

  Electromagnetic radiation caused in the phenomenon of radioactive decay. Their wavelength is smaller than that of X-rays, and it is therefore an extremely penetrating radiation.

• Genetic dose

  The dose related to the genetic load of a population. It is calculated as the product of the genetically significant annual dose and the mean procreation age, which is estimated at 30 years.

• Genetically significant dose

  For a population, it is equal to the measure of the individual doses. Each individual dose is calculated by weighting the dose received by the gonads, taking into account the likely number of children that can be bred after exposure to radiation.

• Global/partial exposure

  Global exposure is considered to affect the entire body homogeneously. Partial exposure is limited essentially to one part of the organism, or to one or more organs or tissues, or is considered to be non-homogeneous exposure of the entire body.

• Gray

  Unit used in the International System of Units to measure the absorbed dose; it equals one joule per kilogramme (J/kg).