Real-Time Reaction Probing by Laser Coulomb Explosion Imaging

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  • レーザークーロン爆発イメージングによる実時間反応追跡

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Molecules exposed to few-cycle intense laser fields (> 1014 W/cm2) undergo a rapid bond breaking process called Coulomb explosion. Since the momenta of the resultant fragment ions reflect the geometrical structure of the target molecule, Coulomb explosion provides a direct access to the instantaneous structure of molecules during chemical reaction. Combined with the pump-probe scheme in ultrafast spectroscopy, Coulomb explosion imaging serves as a unique means to probe ultrafast molecular reaction processes in real time. Here we review this novel approach in ultrafast spectroscopy, with the applications to ultrafast isomerization of deuterated acetylene dication (C2D2 2+).

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