Laser Coulomb-explosion imaging of small molecules
- 19 January 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 71 (1), 013415
- https://doi.org/10.1103/physreva.71.013415
Abstract
We use intense few-cycle laser pulses to ionize molecules to the point of Coulomb explosion. We use Coulomb’s law or ab initio potentials to reconstruct the molecular structure of and from the correlated momenta of exploded fragments. For , a light and fast system, we observed about and 15° deviation from the known bond length and bond angle. By simulating the Coulomb explosion for equilibrium geometry, we showed that this deviation is mainly caused by ion motion during ionization. Measuring three-dimensional structure with half bond length resolution is sufficient to observe large-scale rearrangements of small molecules such as isomerization processes.
Keywords
This publication has 20 references indexed in Scilit:
- Generation of 38-fs pulses from adaptive compression of a cascaded hollow fiber supercontinuumOptics Letters, 2003
- Time-Resolved Double Ionization with Few Cycle Laser PulsesPhysical Review Letters, 2003
- Direct imaging of rotational wave-packet dynamics of diatomic moleculesPhysical Review A, 2003
- Nonadiabatic tunnel ionization: Looking inside a laser cyclePhysical Review A, 2001
- Femtosecond Coulomb Explosion Imaging of Vibrational Wave FunctionsPhysical Review Letters, 1999
- Geometry modifications and alignment ofin an intense femtosecond laser pulsePhysical Review A, 1999
- Spectral phase interferometry for direct electric-field reconstruction of ultrashort optical pulsesOptics Letters, 1998
- Mass-resolved two-dimensional momentum imaging of the Coulomb explosion of N2 and SO2 in an intense laser fieldChemical Physics Letters, 1998
- Formation and measurement of molecular quantum picostructuresPhysical Review A, 1997
- Role of excited electronic states in the interactions of fast (MeV) molecular ions with solids and gasesPhysical Review A, 1979