All Problems

Scattering of Particles. Rutherford-Bohr Atom

Problem 6.14

A narrow beam of alpha particles with kinetic energy \(T\) \(=1.1 \cdot 10^{19}\) nuclei \(/ \mathrm{cm}^{2}\). Find the fraction of alpha particles scattered through the angles \(\theta<\theta_{0}=20^{\circ}\)

Reveal Answer
ΔN/N=1πnZ2e4/T2tan2(θ0/2)=0.6\Delta N / N=1-\pi n Z^{2} e^{4} / T^{2} \tan ^{2}\left(\theta_{0} / 2\right)=0.6