Illustration Rectangular finite potential well (1d) - Graph

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Here, a finite, rectangular, one-dimensional potential energy function (potential for short) $$W_{\text{pot}}(x)$$ was sketched as a function of space $$x$$. The potential has the length $$L$$.

• Inside the potential well, that is between $$-L/2$$ and $$L/2$$, a particle has no potential energy.
• Outside the potential well, the particle has a finite potential energy $$V_0$$.