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Explore the classical allowed and forbidden regions, positive and negative curvature implications on energy levels. Understand physically acceptable vs. unacceptable solutions in quantum mechanics.
E N D
E = K + U U(x) U(x) U = 0 negative curvature classical allowed region positive curvature energy E > U K > 0 positive curvature E E < U K < 0 E < U K < 0 U = -U0 classical forbidden region classical forbidden region position x
U(x) Physically unacceptable solution: wavefunction diverges to + E = 177.0 eV Physically acceptable solution: wavefunction converges to 0 E = 173.5 eV Physically unacceptable solution: wavefunction diverges to - E = 170.0 eV
1st excited state n = 2, E2 = -296.63 eV ground state n = 1, E1 = -373.84 eV 2nd excited state n = 3, E3 = -173.5 eV 3nd excited state n = 4, E4 = -21 eV
E = - 373.797386eV E = - 373.797396eV E = - 373.797300eV
anti-nodal line – constructive interference slit 1 slit 2 nodal line – destructive interference
U U = 0 x force on bound electron F F = 0 x x = 0
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