Radiation Units

Physical Quantity	Modern Unit (SI Unit)	Old Unit (quasi-cgs unit)
Radiation Dose Concept: Energy per unit mass	gray 1 Gy = 1 joule/kg	rad 1 rad = 1 erg/gram
Radiation Dose Equivalent Concept: the dose that is equivalent (in terms of effect on cells) to a dose of 100-keV x-rays Since (for example) neutrons have about 20 times as much effect on cells as x-rays (for the same dose), 1 milligray of neutrons amounts to 20 millisieverts.	sievert	rem
Conversions	1 rad = 0.01 Gy 1 rem = 0.01 Sv

Perhaps you would like to subscribe to The Energy Advocate

***************************