We report experimental results on x-ray diffraction of quantum-state- selected and strongly aligned ensembles of the prototypical asymmetric rotor molecule 2,5-diiodobenzonitrile using the Linac Coherent Light Source. The experiments demonstrate first steps toward a new approach to diffractive imaging of distinct structures of individual, isolated gas-phase molecules. We confirm several key ingredients of single molecule diffraction experiments: the abilities to detect and count individual scattered x-ray photons in single shot diffraction data, to deliver state-selected, e.g., structural-isomer-selected, ensembles of molecules to the x-ray interaction volume, and to strongly align the scattering molecules. Our approach, using ultrashort x-ray pulses, is suitable to study ultrafast dynamics of isolated molecules. © 2014 American Physical Society.
CITATION STYLE
Küpper, J., Stern, S., Holmegaard, L., Filsinger, F., Rouzée, A., Rudenko, A., … Chapman, H. N. (2014). X-ray diffraction from isolated and strongly aligned gas-phase molecules with a free-electron laser. Physical Review Letters, 112(8). https://doi.org/10.1103/PhysRevLett.112.083002
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