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Details

Units of Measure
N/A
24
Physics
Professional
04/15/2013

Additional Physics Flashcards

 


 

Cards

Term
the sum of the charges in one sign produced by photon irradiation per unit mass
Definition
exposure
Term
exposure was adopted in ___ to replace
Definition
1928
skin erythema dose
Term
traditional unit of measurement for exposure
Definition
roentgen (R)
Term
exposure applies only to ___ having energies less than ___ and interactions with __ only
Definition
photons
3 MeV
air
Term
1 roentgen= _____ C/kg
Definition
2.58 x 10^-4 coulombs per kilogram of air
Term
the amount of energy transferred is equivalent to the amount of energy absorbed by the object and becomes the ____
Definition
absorbed dose
Term
the absorbed dose was adopted in __ to replace the ___
Definition
1953
roentgen
Term
unit of absorbed dose
Definition
"rad" Radiation Absorbed Dose
Term
1 rad = __ R
Definition
1
Term
developed to modify the absorbed dose to reflect the level of biological damage caused by radiation
Definition
dose equivalent (EqD)
Term
dose equivalent is the product of the ____ in a tissue and its associated ____ for the type and energy of the radiation in question
Definition
absorbed dose
weighing factor
Term
unit of dose equivalent used to report occupational exposure
Definition
"rem"
radiation equivalent man
Term
weighing factor for x and gamma rays
Definition
1
Term
weighing factor for beta
Definition
1
Term
weighing factor for neutrons with energy less than 10 KeV
Definition
5
Term
weighing factor for neutrons with energy 10-100 keV
Definition
10
Term
weighing factor for aplha
Definition
20
Term
a measure of the nuclides transformation rate (number of disintergrations occuring per unit of time)
Definition
curie (Ci)
Term
3.7 x 10^10 disintegrations per second =
Definition
1 curie
Term
the curie ____ a direct measure of the radiation hazard
Definition
is not
Term
SI unit for absorbed dose
Definition
"gray" Gy
1 Gy= 100 rad
Term
SI unit for dose equivalent
Definition
"sievert" Sv
1 Sv= 100 rem
Term
SI unit for radioactivity
Definition
Becquerel (Bq)
1 Bq= 1 dps
Term
to convert ___ to ___ multiply by 2.58 x 10^-4
Definition
roentgens
C/kg
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