This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Avoidedcrossing.svg en Graphical representation of the variation of energy as function of spacial coordinate which may be varying in time around an avoided crossing The dashed lines represent the energy of the diabatic states which cross each other at zc and the full lines represent the energy of the adiabatic states eigenvalues