Classical Motion and Phase Space for a Morse Oscillator

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This Demonstration illustrates the classical anharmonic motion of a particle governed by the Hamiltonian , where and are the well depth (dissociation energy) and width, respectively. Here and are obtained by solving Hamilton's equations of motion, subject to the initial conditions and . The three panels animate synchronously: (1) the motion of the particle in the potential; (2) the phase space trajectory; and (3) the time series of and . In the upper two panels, the points with minimum (turning points) and maximum momentum are labeled with blue and green 's, respectively.

Contributed by: Porscha McRobbie and Eitan Geva (March 2011)
Open content licensed under CC BY-NC-SA


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