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typeinnocent
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Homework Statement
Assume a steady stream of α particles travels with a constant energy of 20 MeV and carries a current of 2.5 μA.
a) If the beam is directed perpendicular to a plane target, how many α's will strike this target in 8 seconds?
b) At any given instant, how many α's are in a 20 cm length of the beam?
c) Through what electrical potential diffence is it necessary to accelerate each α from rest to bring it to the energy of 20 MeV?
Homework Equations
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The Attempt at a Solution
I have absolutely no idea how to solve any of these questions. The only thing I could think to do was find how many protons were in the current by multiplying 2.5E-6 by 8 seconds to give me the amount of Coulombs. I then multiplied that by 6.2415E18 e/C to get the number of elementary charges. I thought this solution may be the answer to part a) but it wasn't. So now I'm lost.
Any help will be greatly appreciated.