Import a time-varying RF field (a superposition of E and B fields) from a field map

[turnermarlene]

Dear WarpX Developers,

To model the CERN plasma sources using WarpX, we require the ability to incorporate an RF field (time-varying electric (E) and magnetic (B) fields) read from an external file (since these cannot be described using analytic expressions). The read in fields would need to be scaled to oscillate at 2 MHz, with E and B fields 90 degrees out of phase.

Would it be possible to implement this feature in WarpX?

thank you,
Marlene Turner
[email protected]