Radiation Types


Radioactive Materials

Requirements for researchers using unsealed radioactive material at UNSW:

  • Work must be approved by the Radiation Safety Committee
  • Work must be conducted in a registered laboratory
  • Users must have appropriate user licence or work under exemption given by another licenced user


Radiation Apparatus

Requirements for researchers using radiation apparatus at UNSW:

  • X-ray equipment used or intended to be used for medical, veterinary or dental purposes must be inspected and issued with a certificate of compliance by an EPA accredited Consulting Radiation Expert in accordance with the EPA Radiation Guideline 6.
  • X-ray equipment and its location must be assessed by the Radiation Safety Committee and recommended to the DVC(R) for registration with the EPA prior to starting work.
  • X-ray equipment may only be used by, or under the supervision of, a person with an appropriate EPA user licence and supervising condition attached.



Laser (or light application by stimulated emission of radiation) is different from other sources of non-ionising radiation in both the mechanism of operation and the quality of radiation produced. Laser beams usually are of a small diameter with low divergence and a high power density. Lasers can either emits radiation continuously or in a single pulse or a series of pulses. The output is either monochromatic or consists of a number of wavelengths.