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Scattering of Particles. Rutherford-Bohr Atom

Problem 6.43

A stationary He+ ion emitted a photon corresponding to the first line of the Lyman series. That photon liberated a photoelectron from a stationary hydrogen atom in the ground state. Find the velocity of the photoelectron.

Reveal Answer
v=2ℏR/m=3.1⋅106 m/s, where m is the mass of the electronv=2 \sqrt{\hbar R / m}=3.1 \cdot 10^{6} \mathrm{~m} / \mathrm{s}, \text { where } m \text { is the mass of the electron}
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