Physics, 10.07.2019 18:20 kingbolt1

Neutrons emerge from a plane surface into a vacuum with an angular flow rate proportional to the square of the cosine of the angle with respect to an outward normal fi to the surface. let j, n be the net flow rate at the surface. what is the total (not angular) flux density in terms of jn?

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Neutrons emerge from a plane surface into a vacuum with an angular flow rate proportional to the squ...