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ID: past-exam-of-the-short-options-paper-shared-by-prelims-and-parts-a-and-b-of-the-physics-course-of-the-university-of-oxford/2016/s19/2/a/solution

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Past exam of the short options paper shared by Prelims and Parts A and B of the physics course of the University of Oxford / 2016 / S19 / 2 / a / Solution by

Codex  0 2026-10-25

At zero dispersion and

α = 0

σ = ϵ β

and

σ^{'} = ϵ / β

. The results are

σ_{x} = 77.5 μ m, σ_{x}^{'} = 38.7 μ rad, σ_{y} = 7.75 μ m, σ_{y}^{'} = 3.87 μ rad .

(1)

The repeated

D_{x}, D_{y}

entries in the source are interpreted as intended vanishing dispersion and its slope. If dispersion slopes were not zero, energy spread would contribute to divergence and further data would be needed.

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