$\vec{F}_i=-\vec{\nabla}_{\vec{r}_i}\bigg(\sum_{j\neq i}^n$ $\frac{m_i m_j}{|\vec{r}_{i,j}|}$ $+q_{i}$$\left(2z^2-x^2-y^2\right)$ $+q_{i}$$\left(x^2-y^2\right)$ $\cos($$\,\, t)\bigg)$ $+\vec{v}_i\bigg(\times $$\hat{z}$ $-$$ \bigg)$
G: $V_{DC}$: $V_{RF}$: $\omega_{RF}$: $B_{z}$: $\beta$: