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

Journal Article · Thu Nov 14 00:00:00 EST 2013 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4829766· OSTI ID:22251464

Kim, Jaehee ^[1]; Schorb, Sebastian ^[2]; White, James ^[3]; Cryan, James P.; Zipp, Lucas ^[1]; Glownia, J. Michael; Broege, Douglas ^[3]; Miyabe, Shungo; Tao, Hongli ^[3]; Martinez, Todd ^[3]; Bucksbaum, Philip H. ^[1]

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1. Department of Physics, Stanford University, Stanford, California 94305 (United States)
2. SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
3. The Stanford PULSE Institute, Menlo Park, California 94025 (United States)

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.

• OSTI ID: 22251464
• Journal Information: Journal of Chemical Physics, Vol. 139, Issue 18; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ENERGY LOSSES
EXCITED STATES
FRAGMENTATION
IONIZATION
KINETIC ENERGY