Laser Coulomb explosion imaging for probing ultra-fast molecular dynamics
- L\ue9gar\ue9, F.
- Lee, Kevin F.
- Bandrauk, A. D.
- Villeneuve, D. M.
- Corkum, P. B.
DOIAbstract
We use laser Coulomb explosion imaging (CEI) to measure structural change during molecular ultra-fast dynamics. We obtain time information with a pump\u2013probe approach using few-cycle laser pulses (<8 fs). The time required for ionization by the intense probe pulse sets our time resolution at ~4 fs. Using coincidence imaging, we obtain image information by measuring the vector momenta of all atomic ions produced by Coulomb explosion of a single molecule. We demonstrate the capability of laser CEI by following the motion of vibrating D2+ and of dissociating SO22+ and SO23+ molecules with sub-\uc5 spatial resolution. Using correlation maps, we identify molecules by dissociation channel.Peer reviewed: YesNRC publication: Ye
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