Femtosecond-multiphoton-ionization of molecules: Absorption and fragmentation processes

1995 ◽  
Author(s):  
Klaus-Peter Aicher ◽  
Ulf Wilhelm ◽  
Jürgen Grotemeyer
Keyword(s):  
Multiphoton Ionization ◽  
Fragmentation Processes

scholarly journals Multiphoton Ionization and Fragmentation of Hydrogen Chloride: A Diatomic Still Good for a Surprise

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Christof Maul ◽  
Alexey I. Chichinin ◽  
Karl-Heinz Gericke
Keyword(s):  
Hydrogen Chloride ◽  
Multiphoton Ionization ◽  
Chemical Imaging ◽  
Angular Distributions ◽  
Ultraviolet Wavelength ◽  
Production Of Hydrogen ◽  
Minimum Potential ◽  
Fragmentation Processes ◽  
Competing Pathways

The competition between multiphoton ionization and fragmentation in the diatomic molecule hydrogen chloride is reviewed. Emphasis is laid on recent experimental results employing chemical imaging methods in order to obtain kinetic energy distributions and angular distributions of photoproducts. The energy range considered is 15 to 20 eV, equivalent to the absorption of three or four photons in the ultraviolet wavelength range. The role of Rydberg states as resonantly excited intermediate states in the ionization/fragmentation processes is assessed. Mixing among Σ1+ states gives rise to peculiarly shaped double minimum potential energy curves which allow for the production of hydrogen and chlorine atomic and ionic fragments via several competing pathways, in addition to the production of molecular HCl+ ions. States with different electronic properties show a qualitatively different behaviour from Σ+ states. Accidental resonances between states of differing orbital angular momentum or multiplicity serve to override these differences and cause subtle as well as significant deviations from the unperturbed behaviour.

High energy Rydberg and ion-pair states, state mixing and excitation dynamics of HI

2019 ◽  
Vol 21 (41) ◽  
pp. 23154-23161 ◽  
Author(s):  
Arnar Hafliðason ◽  
Meng-Xu Jiang ◽  
Ágúst Kvaran
Keyword(s):  
Multiphoton Ionization ◽  
High Energy ◽  
Ion Pair ◽  
State Mixing ◽  
Fragmentation Processes ◽  
Excitation Dynamics

High energy Rydberg and ion-pair states, state interactions, mixing and effects on multiphoton-fragmentation processes determined from mass-resolved-multiphoton-ionization (MR-MPI) studies of HI.

Two-color studies of CH3Br excitation dynamics with MPI and slice imaging

2019 ◽  
Vol 21 (20) ◽  
pp. 10391-10401 ◽  
Author(s):  
Arnar Hafliðason ◽  
Pavle Glodic ◽  
Greta Koumarianou ◽  
Peter C. Samartzis ◽  
Ágúst Kvaran
Keyword(s):  
Multiphoton Ionization ◽  
Pump And Probe ◽  
Slice Imaging ◽  
Fragmentation Processes ◽  
Excitation Dynamics

Multiphoton-fragmentation processes for CH3Br determined by two-color, pump and probe experiments with mass-resolved-multiphoton-ionization (MR-MPI) and slice imaging.

Suppression of fragmentation in multiphoton ionization mass spectrometry using a near-infrared femtosecond laser as an ionization source

The Analyst ◽  
2017 ◽  
Vol 142 (20) ◽  
pp. 3942-3947 ◽  
Author(s):  
Adan Li ◽  
Thang Phan Dinh ◽  
Tomoko Imasaka ◽  
Totaro Imasaka
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Near Infrared ◽  
Multiphoton Ionization ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Ionization Source ◽  
Fragmentation Processes

The ionization and fragmentation processes were examined for pentachlorobenzene using a femtosecond laser emitting at 400, 800, and 1200 nm.

Multiphoton ionization of atoms

1975 ◽  
Vol 115 (3) ◽  
pp. 361 ◽  
Author(s):  
N.B. Delone
Keyword(s):  
Multiphoton Ionization

New effects in the multiphoton ionization of atoms

1989 ◽  
Vol 158 (6) ◽  
pp. 215 ◽  
Author(s):  
N.B. Delone ◽  
M.V. Fedorov
Keyword(s):  
Multiphoton Ionization
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