IEVref:881-04-33ID:
Language:enStatus: Standard
Term: mass energy-absorption coefficient (of a material for indirectly ionizing particles)
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Symbol: μ en ρ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaeqiVd02aaSbaaSqaaiaabwgacaqGUbaabeaaaOqaaiabeg8aYbaaaaa@3AE3@
Definition: the product of the mass energy transfer coefficient ( μ tr ρ ) MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSaaaeaacqaH8oqBdaWgaaWcbaGaaeiDaiaabkhaaeqaaaGcbaGaeqyWdihaaaGaayjkaiaawMcaaaaa@3C7F@ for that energy and (1– g) where g is the fraction of the energy of secondary charged particles that is lost to bremsstrahlung in the material

NOTE – When the material is air, μ en ρ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaeqiVd02aaSbaaSqaaiaabwgacaqGUbaabeaaaOqaaiabeg8aYbaaaaa@3AE3@ is proportional to the quotient of exposure by energy fluence in the usual case of constant W.


Publication date:1983-01
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