- #1

Faisal Moshiur

- 15

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- Homework Statement
- Write an equation expressing the neutron current in an infinite vacuum for a point source. (Hint: There is no diffusion coefficient term as the medium is an infinite vacuum.)

- Relevant Equations
- Φ = S / (4 π r^2 )

J = -∇Φ

J = Φ.n, where n is a unit vector normal to the flow of flux.