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Title: Enhancement of strong-field multiple ionization in the vicinity of the conical intersection in 1,3-cyclohexadiene ring opening

Nonradiative energy dissipation in electronically excited polyatomic molecules proceeds through conical intersections, loci of degeneracy between electronic states. We observe a marked enhancement of laser-induced double ionization in the vicinity of a conical intersection during a non-radiative transition. We measured double ionization by detecting the kinetic energy of ions released by laser-induced strong-field fragmentation during the ring-opening transition between 1,3-cyclohexadiene and 1,3,5-hexatriene. The enhancement of the double ionization correlates with the conical intersection between the HOMO and LUMO orbitals.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [2] ; ;  [1] ;  [2] ;  [2] ; ;  [4] ;  [2] ;  [2] ; ;  [4] ;  [2] ;  [4] ;  [2] ;  [2] more »;  [1] ;  [2] ;  [2] ;  [2] « less
  1. Department of Physics, Stanford University, Stanford, California 94305 (United States)
  2. (United States)
  3. SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
  4. The Stanford PULSE Institute, Menlo Park, California 94025 (United States)
Publication Date:
OSTI Identifier:
22251464
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 139; Journal Issue: 18; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ENERGY LOSSES; EXCITED STATES; FRAGMENTATION; IONIZATION; KINETIC ENERGY