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14.3: Часткові хвилі
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\[\psi_0({\bf r}) \simeq \sqrt{n} \sum_l {\rm i}^{\,l}\, (2l+1)\left[\frac{ {\rm e}^{\,{\rm i}\,(k\,r - l\,\pi/2)} -{\rm e}^{-{\rm i}\,(k\,r - l\,\pi/2)}}{2\,{\rm i}\,k\,r} \right]P_l(\cos\theta)\labe... $\psi_0({\bf r}) \simeq \sqrt{n} \sum_l {\rm i}^{\,l}\, (2l+1)\left[\frac{ {\rm e}^{\,{\rm i}\,(k\,r - l\,\pi/2)} -{\rm e}^{-{\rm i}\,(k\,r - l\,\pi/2)}}{2\,{\rm i}\,k\,r} \right]P_l(\cos\theta)\label{e17.70}$ в великому $r$ ліміті.