Explore BrainMass

Atomic and Molecular Physics - Tunneling

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

A Hydrogen atom and a Helium atom each with 4 eV of KE approach a thin barrier 6 MeV high which has the greater probability of tunneling through the barrier? Explain.

© BrainMass Inc. brainmass.com October 24, 2018, 6:41 pm ad1c9bdddf

Solution Preview

This is based on the size of the atoms. If both have the same kinetic ...

Solution Summary

Detailed solution of an atom tunneling through a barrier.

See Also This Related BrainMass Solution


1. The wavelength spectrum of the radiation energy emitted from a system in thermal equilibrium is observes to have a maximum value which decreases with increasing temperature. Outline briefly the significance of this observation for quantum physics.
2. The “stopping potential” in a photoelectric cell depends only on the frequency v of the incident electromagnetic radiation and not on its intensity. Explain how the assumption that each photoelectron is emitted following the absorption of a single quantum of energy hv is consistent with this observation.
3. Write down the de Broglie equations relating the momentum and energy of free particle to, respectively, the wave number k and angular frequency w of the wave-function which describes the particle.
4. Write down the Heisenberg uncertainty Principle as it applies to the position x and momentum p of a particle moving in one dimension.
5. Estimate the minimum range of the momentum of a quark confined inside a proton size 10 ^ -15 m.
6. Explain briefly how the concept of wave-particle duality and the introduction of a wave packet for a particle satisfies the Uncertainty Principle.

View Full Posting Details