Excited state reaction dynamics of Ti(a5FJ) + O2 → TiO(A3Φ, B3Π, C3Δ) + O studied by a crossed-beam velocity map imaging technique

2015 ◽  
Vol 142 (15) ◽  
pp. 154307
Author(s):  
Kenji Honma ◽  
Yuhki Tanaka
Keyword(s):  
Excited State ◽  
Imaging Technique ◽  
Reaction Dynamics ◽  
Velocity Map Imaging ◽  
Beam Velocity

scholarly journals Single-shot imaging of surface molecular ionization in nanosystems

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Fenghao Sun ◽  
Hui Li ◽  
Shanshan Song ◽  
Fei Chen ◽  
Jiawei Wang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Strong Field ◽  
Imaging Technique ◽  
Near Field ◽  
Velocity Map Imaging ◽  
Single Shot ◽  
Surface Molecules ◽  
Nanoparticle Interactions ◽  
Field Response ◽  
Ion Species

Abstract Using single-shot velocity map imaging technique, explosion imaging of different ion species ejected from 50 nm SiO2 nanoparticles are obtained excitedly by strong near-infrared and ultraviolet femtosecond laser fields. Characteristic momentum distributions showing forward emission of the ions at low excitation intensities and shock wave behaviors at high intensities are observed. When the excitation intensity is close to the dissociative ionization threshold of the surface molecules, the resulting ion products can be used to image the instant near-field distributions. The underlying dynamics of shock formation are simulated by using a Coulomb explosion model. Our results allow one to distinguish the ultrafast strong-field response of various molecular species in nanosystems and will open a new way for further exploration of the underlying dynamics of laser-and-nanoparticle interactions.

Ultrafast relaxation investigated by Photoelectron Circular Dichroism : an isomeric comparison of Camphor and Fenchone

2021 ◽  
Author(s):  
Valérie Blanchet ◽  
Dominique Descamps ◽  
stephane Petit ◽  
Yann Mairesse ◽  
bernard Pons ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Imaging Technique ◽  
Velocity Map Imaging ◽  
Relaxation Dynamics ◽  
Time Resolved ◽  
Pump Probe ◽  
Ultrafast Relaxation ◽  
Circular Dichroïsm ◽  
Isomeric Effects

We study isomeric effects using time resolved photoelectron circular dichroism (PECD). By a (1+1’)pump-probe ionisation with photoelectron collected by velocity map imaging technique, we compare relaxation dynamics from the 3s-Rydberg...

scholarly journals Investigating the Environment-dependent Photophysics of Chlorine Dioxide With Resonance Raman Intensities

1999 ◽  
Vol 19 (1-4) ◽  
pp. 305-309
Author(s):  
Anthony P. Esposito ◽  
Catherine E. Foster ◽  
Philip J. Reid
Keyword(s):  
Excited State ◽  
Gas Phase ◽  
Chlorine Dioxide ◽  
Resonance Raman ◽  
Structural Evolution ◽  
Reaction Dynamics ◽  
Intensity Analysis ◽  
Normal Coordinates ◽  
Raman Intensities ◽  
Asymmetric Stretch

The condensed-phase excited-state reaction dynamics of chlorine dioxide are investigated using resonance Raman intensity analysis. Absolute Raman intensities are measured on resonance with the 2B2–2A2 electronic transition and used to establish the excited-state structural evolution which occurs on the 2A2 surface following photoexcitation. Analysis of the intensities demonstrates that excited-state relaxation occurs along all three normal coordinates; however, only modest evolution is observed along the asymmetric stretch. This limited relaxation stands in contrast to the extensive motion along this coordinate in the gas phase. It is proposed that the initial excited-state structural relaxation serves to define the symmetry of the reaction coordinate and thus the mechanism of Cl production following photolysis of OClO.

Pressure effects on the excited-state reaction dynamics of cis-bis(bipyridine)dichlororhodium(III), cis-Rh(bpy)2Cl2+

1986 ◽  
Vol 25 (27) ◽  
pp. 4893-4897 ◽  
Author(s):  
S. Wieland ◽  
J. DiBenedetto ◽  
R. Van Eldik ◽  
P. C. Ford
Keyword(s):  
Excited State ◽  
Reaction Dynamics ◽  
Pressure Effects

Velocity Map Imaging: Technique and Applications to O2Photodissociation

2000 ◽  
pp. 56-67
Author(s):  
D. H. Parker ◽  
B. L. G. Bakker ◽  
R. Delmdahl ◽  
T. Berg ◽  
A. T. J. B. Eppink
Keyword(s):  
Imaging Technique ◽  
Velocity Map Imaging
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