Radiation energetic enough to ionize matter. Its biological effects can include direct molecular damage and indirect chemical changes, with consequences depending on dose, timing and cellular context.
Control of exposure to ionizing radiation. Basic physical measures include reducing time near a source, increasing distance and using radiation shielding; confinement of radioactive material addresses contamination.
Measurement or calculation of energy imparted by ionizing radiation, together with explicitly specified weighting conventions. Absorbed dose, equivalent dose and effective dose are different quantities.
A radiation weighting factor weighted sum of mean absorbed doses for a specified organ or tissue. Its unit is the sievert.
A dimensionless factor used to convert a specified radiation component's absorbed dose into its contribution to equivalent dose.
Articles by others on the same topic
Radiation is the emission and transmission of energy in the form of waves or particles through space or a material medium. It can occur in various forms, and it is generally categorized into two main types: 1. **Ionizing Radiation**: This type of radiation has enough energy to remove tightly bound electrons from atoms, creating ions. It includes: - **Alpha Particles**: Helium nuclei emitted from radioactive materials.