513.001 Molecular and Solid State Physics | |
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Morse potentialThe bond between two atoms can be described by a Morse potential where U0 = 9 eV, r0 = 0.17 nm, and a = 0.085 nm. U(r) = U0(e-2(r - r0)/a - 2e-(r - r0)/a) For small deviations around r0, the force between the two atoms can be described by Hooke's law F = -k(r - r0). Here k is the effective spring constant. The relationship between the potential and the force is F = -dU/dr. What is the spring constant for this bond? |