# Dynamics of polar polarizable rotors acted upon by unipolar electromagnetic pulses: From the sudden to the adiabatic regime.

@article{Mirahmadi2018DynamicsOP, title={Dynamics of polar polarizable rotors acted upon by unipolar electromagnetic pulses: From the sudden to the adiabatic regime.}, author={Marjan Mirahmadi and Burkhard Schmidt and Mallikarjun Karra and Bretislav Friedrich}, journal={The Journal of chemical physics}, year={2018}, volume={149 17}, pages={ 174109 } }

We study, analytically as well as numerically, the dynamics that arises from the interaction of a polar polarizable rigid rotor with single unipolar electromagnetic pulses of varying length, Δτ, with respect to the rotational period of the rotor, τ r . In the sudden, non-adiabatic limit, Δτ ≪ τ r , we derive analytic expressions for the rotor's wavefunctions, kinetic energies, and field-free evolution of orientation and alignment. We verify the analytic results by solving the corresponding time…

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