期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 39, 期 13, 页码 S503-S513出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/39/13/S23
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We use laser Coulomb explosion imaging (CEI) to measure structural change during molecular ultra-fast dynamics. We obtain time information with a pump-probe approach using few-cycle laser pulses (< 8 fs). The time required for ionization by the intense probe pulse sets our time resolution at similar to 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 D-+(2) and of dissociating SO22+ and SO23+ molecules with sub-angstrom patial resolution. Using correlation maps, we identify molecules by dissociation channel.
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