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# Compare the biological damage done to a person exposed to a 0.1 mSv dose of X-rays and...

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Compare the biological damage done to a person exposed to a 0.1 mSv dose of X-rays and a person exposed to a 0.1 mSv dose of alpha particles?

Posted by maria222 on January 20, 2013 at 7:11 PM via web and tagged with nuclear physics, science

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The Sievert is a radiological unit for the total quantity of energy absorbed by a variable biological mass  that produces a certain given damage. This means that in fact while the dose of radiation stays the same for the same damage that is produced, the given mass that absorbs the radiation is variable with the type of the radiation.

`1 Sv = 1J/("kg-equivalent")`

Thus for gamma radiation `1 "kg-equivalent" = 1 kg` while for alpha radiation `1"kg-equivalent" =20 kg`

Therefore 0.1 mSv of X rays will have the same biological effect as 0.1 mSv of alpha particles (only the total real energy of the X rays that produce this damage will be 20 times higher than the total energy of alpha particles).

Posted by valentin68 on November 2, 2013 at 8:21 AM (Answer #1)