An -particle (mass ) is required to have a de Broglie wavelength equal to the nuclear…

PHYSICS · Multi-part · A Level · Physics · Particles and radiation · Particles and radiation

Problem

\alpha

-particle (mass

6.64\times10^{-27}\,\text{kg}

) is required to have a de Broglie wavelength equal to the nuclear diameter

1.0\times10^{-14}\,\text{m}

. (i) Determine the speed the particle must possess. Take

h = 6.626\times10^{-34}\,\text{J s}

. (ii) Comment briefly on the feasibility of observing diffraction of such

\alpha

-particles by a nucleus.