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A 6.0-mm-diameter proton beam carries a total current of 1.4 mA . The current density in...

A 6.0-mm-diameter proton beam carries a total current of 1.4 mA . The current density in the proton beam, which increases with distance from the center, is given by J=Jedge(r/R) , where R is the radius of the beam and Jedge is the current density at the edge.

Part A.

How many protons per second are delivered by this proton beam?

Part B.

Determine the value of Jedge.

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