Phys. Rev. Lett. 89, 013001 (2002) [4 pages]Coincident Fragment Detection in Strong Field Photoionization and Dissociation of H2Received 29 May 2001; published 14 June 2002 Electron-ion momentum spectroscopy is used to investigate the correlated electronic and nuclear motion in fragmentation of H2 in 4×1014W/cm2, 25 fs laser pulses at 795 nm. Reaction channel dependent photoelectron spectra indicate that besides the main, stepwise H2 ionization H2+ dissociation mechanism resulting in the products H(1s)+H++e- a second new mechanism has to be assumed. The momentum distribution of H+ ions in the dissociation channels H(1s)+H++e- and 2H++2e- is found to be independent of the kinetic energy of the photoelectrons. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.013001
DOI:
10.1103/PhysRevLett.89.013001
PACS:
33.80.Rv, 33.80.Wz
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