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Display information for equation id:math.2156.18 on revision:2156
* Page found: Mikroskopisches Modell der Polarisierbarkeit (eq math.2156.18)
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TeX (original user input):
\begin{align}
& \ddot{\bar{r}}={{{\ddot{\bar{r}}}}_{k}}-{{{\ddot{\bar{r}}}}_{e}}=-\frac{{{Z}^{2}}{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{3}}{{m}_{K}}}\left( {{{\bar{r}}}_{k}}-{{{\bar{r}}}_{e}} \right)+\frac{Ze}{{{m}_{K}}}{{{\bar{E}}}_{a}}\left( {{{\bar{r}}}_{\acute{\ }k}},t \right)-\frac{Z{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{3}}{{m}_{e}}}\left( {{{\bar{r}}}_{k}}-{{{\bar{r}}}_{e}} \right)+\frac{e}{{{m}_{e}}}{{{\bar{E}}}_{a}}\left( {{{\bar{r}}}_{k}},t \right) \\
& =-\frac{{{Z}^{2}}{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{3}}}\left( \frac{1}{{{m}_{K}}}+\frac{1}{Z{{m}_{e}}} \right)\left( {{{\bar{r}}}_{k}}-{{{\bar{r}}}_{e}} \right)+Ze\left( \frac{1}{{{m}_{K}}}+\frac{1}{Z{{m}_{e}}} \right){{{\bar{E}}}_{a}}\left( {{{\bar{r}}}_{k}},t \right) \\
& \left( \frac{1}{{{m}_{K}}}+\frac{1}{Z{{m}_{e}}} \right)\approx \frac{1}{Z{{m}_{e}}} \\
& \left( {{{\bar{r}}}_{k}}-{{{\bar{r}}}_{e}} \right)=\bar{r} \\
& \Rightarrow \ddot{\bar{r}}=-\frac{Z{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{m}_{e}}{{R}^{3}}}\bar{r}+\frac{e}{{{m}_{e}}}{{{\bar{E}}}_{a}}\left( {{{\bar{r}}}_{k}},t \right) \\
& \frac{Z{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{m}_{e}}{{R}^{3}}}:={{\omega }_{0}}^{2} \\
& \Rightarrow \ddot{\bar{r}}+{{\omega }_{0}}^{2}\bar{r}=\frac{e}{{{m}_{e}}}{{{\bar{E}}}_{a}}\left( {{{\bar{r}}}_{k}},t \right) \\
\end{align}
TeX (checked):
{\begin{aligned}&{\ddot {\bar {r}}}={{\ddot {\bar {r}}}_{k}}-{{\ddot {\bar {r}}}_{e}}=-{\frac {{{Z}^{2}}{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{3}}{{m}_{K}}}}\left({{\bar {r}}_{k}}-{{\bar {r}}_{e}}\right)+{\frac {Ze}{{m}_{K}}}{{\bar {E}}_{a}}\left({{\bar {r}}_{{\acute {\ }}k}},t\right)-{\frac {Z{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{3}}{{m}_{e}}}}\left({{\bar {r}}_{k}}-{{\bar {r}}_{e}}\right)+{\frac {e}{{m}_{e}}}{{\bar {E}}_{a}}\left({{\bar {r}}_{k}},t\right)\\&=-{\frac {{{Z}^{2}}{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{3}}}}\left({\frac {1}{{m}_{K}}}+{\frac {1}{Z{{m}_{e}}}}\right)\left({{\bar {r}}_{k}}-{{\bar {r}}_{e}}\right)+Ze\left({\frac {1}{{m}_{K}}}+{\frac {1}{Z{{m}_{e}}}}\right){{\bar {E}}_{a}}\left({{\bar {r}}_{k}},t\right)\\&\left({\frac {1}{{m}_{K}}}+{\frac {1}{Z{{m}_{e}}}}\right)\approx {\frac {1}{Z{{m}_{e}}}}\\&\left({{\bar {r}}_{k}}-{{\bar {r}}_{e}}\right)={\bar {r}}\\&\Rightarrow {\ddot {\bar {r}}}=-{\frac {Z{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{m}_{e}}{{R}^{3}}}}{\bar {r}}+{\frac {e}{{m}_{e}}}{{\bar {E}}_{a}}\left({{\bar {r}}_{k}},t\right)\\&{\frac {Z{{e}^{2}}}{4\pi {{\varepsilon }_{0}}{{m}_{e}}{{R}^{3}}}}:={{\omega }_{0}}^{2}\\&\Rightarrow {\ddot {\bar {r}}}+{{\omega }_{0}}^{2}{\bar {r}}={\frac {e}{{m}_{e}}}{{\bar {E}}_{a}}\left({{\bar {r}}_{k}},t\right)\\\end{aligned}}
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