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ISO 31-10

ISO 31-10 is the part of international standard ISO 31 that defines names and symbols for quantities and units related to nuclear reactions and ionizing radiations. It gives names and symbols for 70 quantities and units. Where appropriate, conversion factors are also given.

Its definitions include:

Quantity Unit Remarks
Name Symbol Definition Name Symbol Definition
activity A Expectation value of the number of spontaneous nuclear transitions from a particular energy state occurring in an amount of radionuclide in a small time interval, divided by that time interval becquerel Bq 1 Bq = 1/s The becquerel is a special name for second to the power minus one, to be used as the SI unit of activity.
curie:
1 Ci = 3.7×1010 Bq (exactly)
absorbed dose D For any ionizing radiation, the mean energy imparted to an element of irradiated matter divided by the mass of this element gray Gy 1 Gy = 1 J/kg The gray is a special name for joule per kilogram, to be used as the SI unit for absorbed dose.
rad:
1 rad = 0.01 Gy
dose equivalent H Product of D, Q and N, at the point of interest in tissue, where D is the absorbed dose, Q is the quality factor and N is the product of any other modifying factors
H = D · Q · N
For Q and N, see CIPM, 1984, Recommendation 1 [1] and ICRU Report 33 (1980) [2]
sievert Sv 1 Sv = 1 J/kg The sievert is a special name for joule per kilogram, to be used as the SI unit for dose equivalent.
rem:
1 rem = 0.01 Sv

part, international, standard, that, defines, names, symbols, quantities, units, related, nuclear, reactions, ionizing, radiations, gives, names, symbols, quantities, units, where, appropriate, conversion, factors, also, given, definitions, include, quantity, . ISO 31 10 is the part of international standard ISO 31 that defines names and symbols for quantities and units related to nuclear reactions and ionizing radiations It gives names and symbols for 70 quantities and units Where appropriate conversion factors are also given Its definitions include Quantity Unit RemarksName Symbol Definition Name Symbol Definition activity A Expectation value of the number of spontaneous nuclear transitions from a particular energy state occurring in an amount of radionuclide in a small time interval divided by that time interval becquerel Bq 1 Bq 1 s The becquerel is a special name for second to the power minus one to be used as the SI unit of activity curie 1 Ci 3 7 1010 Bq exactly absorbed dose D For any ionizing radiation the mean energy imparted to an element of irradiated matter divided by the mass of this element gray Gy 1 Gy 1 J kg The gray is a special name for joule per kilogram to be used as the SI unit for absorbed dose rad 1 rad 0 01 Gydose equivalent H Product of D Q and N at the point of interest in tissue where D is the absorbed dose Q is the quality factor and N is the product of any other modifying factorsH D Q NFor Q and N see CIPM 1984 Recommendation 1 1 and ICRU Report 33 1980 2 sievert Sv 1 Sv 1 J kg The sievert is a special name for joule per kilogram to be used as the SI unit for dose equivalent rem 1 rem 0 01 Sv This standards or measurement related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title ISO 31 10 amp oldid 1167996905, wikipedia, wiki, book, books, library,

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