IONIZING RADIATION

Ionizing Radiation

Has enough energy to remove electrons from atoms.

Important: Can damage DNA and cells.

UV-C, X-rays, Gamma rays, Alpha, Beta particles.

Examples of Ionizing Radiation

Becquerel (Bq)

Radioactivity (decays per second).

Gray (Gy)

Absorbed dose

Sievert (Sv)

Biological effect

Geiger counter, dosimeter, ionization chamber

Instruments used to measure ionization

Cosmic rays, Radon gas, Radioactive rocks, Isotopes in the body

Natural Sources of Ionization

X-rays, CT scans, Radiotherapy, Nuclear power plants, Industriel Uses

Artificial Sources

X-rays for diagnosis, Cancer treatment (radiotherapy), Food sterilization

Benefits if Ionizing Radiation

DNA damage, Radiation sickness, Burns and genetic effects

Harmful Effects of Ionizing Radiation