Can someone please help me with this physics question

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naz00
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Explain why the source of alpha radiation is usually inside the body but the source of gamma radiation can be outside the body..
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LouMcK
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do you have the rest of the question handy, like what is the context within this
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naz00
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(Original post by LouMcK)
do you have the rest of the question handy, like what is the context within this
energy from the nuclei of atoms can be used in the medical diagonisis and treatment. some tumors inside the body can be treated using alpha radiation or gamma radiation.
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LouMcK
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alpha particles cannot travel through many things, only a few cm of air max, and so to use alpha particles as treatment then they must come from within the body
gamma rays pass through almost everything, and so can come from outwith the body with ease
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naz00
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(Original post by LouMcK)
alpha particles cannot travel through many things, only a few cm of air max, and so to use alpha particles as treatment then they must come from within the body
gamma rays pass through almost everything, and so can come from outwith the body with ease
Thank you!!!
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