1 / 12

Units of Radiation

Units of Radiation. Post-doc. ACTIVITY Becquerel. Activity - Becquerel. Becquerel ( Bq ) = 1 disintegration per second ( dps ) 1 Bq = 27 picoCuries 1 kiloBq ( kBq ) = 27 nanoCuries 1 MegaBq ( MBq ) = 27 microCuries ( µ Ci )

adah
Download Presentation

Units of Radiation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Units of Radiation

  2. Post-doc ACTIVITY Becquerel

  3. Activity - Becquerel • Becquerel (Bq) = 1 disintegration per second (dps) 1 Bq = 27 picoCuries 1 kiloBq (kBq) = 27 nanoCuries 1 MegaBq (MBq) = 27 microCuries (µCi) 1 GigaBq (GBq) = 27 milliCuries (mCi) 1 TeraBq (TBq) = 27 Curies

  4. Post-doc ACTIVITY Becquerel EXPOSURE INTENSITY C/kg

  5. Exposure Intensity Coulomb =6.25 x1018 elementary charges A flow of one Coulomb per sec equals one Ampere Coulomb/kg of air = 3876 Roentgens Not applicable to particle emission Does not predict tissue effects at high energies Mainly used for calibration of X-ray machines

  6. Post-doc ACTIVITY Becquerel ABSORBED DOSE Gray EXPOSURE INTENSITY C/kg

  7. Absorbed Dose Gray = Unit of absorbed dose = Joule/kg of tissue Replaced rad: radiation absorbed dose 1 Gy = 100 rads

  8. Post-doc ACTIVITY Becquerel ABSORBED DOSE Gray EXPOSURE INTENSITY C/kg DOSE EQUIVALENT Seivert

  9. Dose Equivalent Relative Biological Effectiveness • Sievert : Replaced rem :radiation equivalent in man Numerical product of Grays times a quality factor Q of the emission Sv = Gray x Q 1 SV = 100rems

  10. Quality Factors *Different types of radiation produce different amounts of biological damage for a given energy deposition: eg. alpha causes much more damage than an equal absorbed dose of gamma radiation. Q=20 for alpha particles, 1 for gamma,beta

  11. Post-doc ACTIVITY ABSORBED DOSE EXPOSURE INTENSITY DOSE EQUIVALENT Fill in the units & their equivalents

More Related