[FLASH-USERS] The laser beam

[cya_ at nudt.edu.cn]

Dear FLASH Users,

I have a question in Section 17.4.6.1 of the User's Guide, which is about the laser beam. The question is why the local z-axis projection of s1 is l1cos(\phi)1cos(\theta - \pi /2) rather than l1cos(\phi)1in equation 17.72.

Any possible suggestions would be great appreciated!

Best wishes, 
Chen Yunan
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