All Problems

Scattering of Particles. Rutherford-Bohr Atom

Problem 6.40

At what minimum kinetic energy must a hydrogen atom move for its inelastic head-on collision with another, stationary, hydrogen atom to make one of them capable of emitting a photon? Both atoms are supposed to be in the ground state prior to the collision.

Reveal Answer
Tmin⁡=3/2ℏR=20.5eVT_{\min }={ }^{3} /_{2} \hbar R=20.5 \mathrm{eV}
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