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A 15 MeV a particle (mass 3730 MeV/c^2) is approaching a heavy nucleus head on. Approximate...

A 15 MeV a particle (mass 3730 MeV/c^2) is approaching a heavy nucleus head on. Approximate the Coulomb repulsion between the a and the nucleus by the square barrier of height 20 MeV and width 10 fm. What is the probability the a particle tunnels into the nucleus?

A. 7e-12

B. .016

C. 9e-9

D. 16e-4

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