Ionizing radiation units: Difference between revisions
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== Radiation Absorbed Dose (rad); a dose of 1 rad means the absorption of 100 ergs of radiation energy per gram of material == |
== Radiation Absorbed Dose (rad); a dose of 1 rad means the absorption of 100 ergs of radiation energy per gram of material == |
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The rad (rad) is |
The rad (rad) is the inverse of the gray (Gy) |
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The gray (GY)is the inverse of the rad (rad) |
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1 rad (rad) = 10 milligray (mGy) 1 milligray (mGy) = 100 millirad (mrad) |
1 rad (rad) = 10 milligray (mGy) |
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1 milligray (mGy) = 100 millirad (mrad) |
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1 millirad (mrad) = 10 microgray (mGy) 1 microgray (mGy) = 100 microrad (mrad) |
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1 microrad (mrad) = 10 nanogray (nGy) 1 nanogray (nGy) = 100 nanorad (nrad) |
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'''A unit of exposure to ionizing radiation. Only used by well trained personel.''' |
'''A unit of exposure to ionizing radiation. Only used by well trained personel.''' |
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Revision as of 00:17, 22 January 2007
ň'Bold text'Radiation Measurement Units-International (SI) System
Activity of an isotope or material, 1 curie = 37 billion disintegrations per second.
The Curie (Ci) is the inverse of Becquerel (Bq)
The Becqurel (Bq) is inverse of the Curie (Ci)
1 curie (Ci) = 37 gigabecquerel (GBq)
1 gigabecquerel (GBq)=27 millicurie (mCi)
Radiation Absorbed Dose (rad); a dose of 1 rad means the absorption of 100 ergs of radiation energy per gram of material
The rad (rad) is the inverse of the gray (Gy)
The gray (GY)is the inverse of the rad (rad)
1 rad (rad) = 10 milligray (mGy)
1 milligray (mGy) = 100 millirad (mrad)
A unit of exposure to ionizing radiation. Only used by well trained personel.
The amount of gamma or x-rays required to produce ions carrying 1 electrostatic unit ef electrical charge (either positive or negative) in 1 cc of dry air under standard conditions.
The roentgen (R) is replaced by coulomb/kg (C/kg) Coulomb/kg replaces the roentgen (R)
1 kiloroentgen(kR) ~ 258 millicoulomb/kg (mC/kg) 1 coulomb/kg (C/kg) ~ 3876 roentgen (R)
1 roentgen (R) ~ 258 microcoulomb/kg (mC/kg) 1 millicoulomb/kg mC/kg ~ 3876 milliroentgen (mR)
1 milliroentgen (mR) ~ 258 nanocoulomb/kg (nC/kg) 1 microcoulomb/kg (mC/kg) ~ 3876 microroentgen (m/R)
1 microroentgen (m/R) ~ 258 picocoulomb/kg (pC/kg) 1 nanocoulomb/kg (nC/kg) ~ 3876 nanoroentgen/kg (nR/kg)
Roentgen Equivalent Man (rem)
The rem (rem) is replaced by the sievert (Sv) The Sievert (Sv) replaces the rem (rem)
1 kilorem (krem) = 10 sievert (Sv) 1 sievert (Sv) = 100 rem (rem)
1 rem (rem) = 10 millisievert (mSv) 1 millisievert (mSv) = 100 millirem (mrem)
1 millirem (mrem) = 10 microsievert (mSv) 1 microsievert (mSv) = 100 microrem (mrem)
1 microrem (mrem) = 10 nanosievert (nSv) 1 nanosievert (nSv) = 100 nanorem (nrem)
Counts Per Minute (CPM)
Used for alpha particles, beta particles or mixed gamma/beta, gamma/alpha, alpha/beta actual counts per minute.
References
Metric units and conversion charts, A metrication handbook for engineers, technologist, and scientist. By Theodore Wildi. ISBN 0-7803-1050-0, IEEE order Number: PP4044.