Difference between revisions of "Kerma"
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| − | Quantity for ionising uncharged particles, defined by the quotient of <math>dE_{tr}</math> by <math>dm</math>, where <math>dE_{tr | + | Quantity for ionising uncharged particles, defined by the quotient of <math>dE_{tr}</math> by <math>dm</math>, where <math>dE_{tr}</math> is the mean sum of the initial kinetic energies of all the charged particles liberated in a mass <math>dm</math> of a material by the uncharged particles incident on <math>dm</math>, thus: |
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Revision as of 17:02, 18 August 2021
Quantity for ionising uncharged particles, defined by the quotient of [math]dE_{tr}[/math] by [math]dm[/math], where [math]dE_{tr}[/math] is the mean sum of the initial kinetic energies of all the charged particles liberated in a mass [math]dm[/math] of a material by the uncharged particles incident on [math]dm[/math], thus:
[math] K = \frac{(dE_{tr})}{dm} [/math]
The SI unit of kerma is joule per kilogram (J kg-1), and its special name is gray (Gy).
ICRP Publication 116, 2010
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