Maple-yu/al-q6

al-q6

Al-q6-learn

🐵 Self-learning of using the cv Q6 to explore the FEL 🐵

Q6

Q6:sixth order Steinhardt parameters

q(i) equal :
$\huge q_{6m}(i) = \frac{\sum_j \sigma( r_{ij} ) Y_{6m}(\mathbf{r}_{ij}) }{\sum_j \sigma( r_{ij} ) }$
while the Q6 is shown as :
$\huge Q_6(i) = \sqrt{ \sum_{m=-6}^6 q_{6m}(i)^{*} q_{6m}(i) }$