Femtosecond Relaxation Dynamics of Molecular Rydberg States Using Time-Resolved Multiphoton Ionization

1983 ◽  
Vol 51 (19) ◽  
pp. 1745-1748 ◽  
Author(s):  
Jay M. Wiesenfeld ◽  
Benjamin I. Greene
Keyword(s):  
Multiphoton Ionization ◽  
Rydberg States ◽  
Relaxation Dynamics ◽  
Time Resolved

scholarly journals Ultrafast Relaxation Dynamics of the S1 (nπ*) State and the 3p and 3d Rydberg States in Cyclohexanone by Femtosecond Photoelectron Imaging

2019 ◽  
Author(s):  
Ole Hüter ◽  
Niklas Helle ◽  
Friedrich Temps
Keyword(s):  
Imaging Spectroscopy ◽  
Rydberg States ◽  
Population Transfer ◽  
Relaxation Dynamics ◽  
Photoelectron Imaging ◽  
Time Resolved ◽  
Flight Mass Spectrometry ◽  
Vibronic Interactions ◽  
Photon Excitation ◽  
Photoelectron Imaging Spectroscopy

<div>The radiationless decay dynamics of the S1 (nπ*) state and the 3p and 3d Rydberg states of cyclohexanone are investigated using femtosecond time-resolved time-of- flight mass spectrometry and photoelectron imaging spectroscopy. After two-photon excitation of the 3p and 3d states, an ultrafast population transfer to the 3s state is observed within < 120 fs. We ascribe this behavior to strong vibronic interactions of the excited Rydberg states with the <sup>1</sup>ππ* valence state that enable an ultrafast population transfer via an avoided crossing and the subsequent passage of a conical intersection between the respective electronic states. Eventually, the 3s state deactivates by internal conversion to the S<sub>1</sub> (nπ*) state, which in turn is found to be long-lived with a decay time of ~ 300 - 800 ps.</div>

scholarly journals Ultrafast Relaxation Dynamics of the S1 (nπ*) State and the 3p and 3d Rydberg States in Cyclohexanone by Femtosecond Photoelectron Imaging

2019 ◽  
Author(s):  
Ole Hüter ◽  
Niklas Helle ◽  
Friedrich Temps
Keyword(s):  
Imaging Spectroscopy ◽  
Rydberg States ◽  
Population Transfer ◽  
Relaxation Dynamics ◽  
Photoelectron Imaging ◽  
Time Resolved ◽  
Flight Mass Spectrometry ◽  
Vibronic Interactions ◽  
Photon Excitation ◽  
Photoelectron Imaging Spectroscopy

<div>The radiationless decay dynamics of the S1 (nπ*) state and the 3p and 3d Rydberg states of cyclohexanone are investigated using femtosecond time-resolved time-of- flight mass spectrometry and photoelectron imaging spectroscopy. After two-photon excitation of the 3p and 3d states, an ultrafast population transfer to the 3s state is observed within < 120 fs. We ascribe this behavior to strong vibronic interactions of the excited Rydberg states with the <sup>1</sup>ππ* valence state that enable an ultrafast population transfer via an avoided crossing and the subsequent passage of a conical intersection between the respective electronic states. Eventually, the 3s state deactivates by internal conversion to the S<sub>1</sub> (nπ*) state, which in turn is found to be long-lived with a decay time of ~ 300 - 800 ps.</div>

Time resolved study of carrier relaxation dynamics in alpha-Al2O3.

2021 ◽  
Author(s):  
Allan Bildé ◽  
Kipras Redeckas ◽  
Andrius Melninkaitis ◽  
Mikas Vengris ◽  
S Guizard
Keyword(s):  
Relaxation Dynamics ◽  
Time Resolved ◽  
Carrier Relaxation ◽  
Carrier Relaxation Dynamics

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...

Excited-state dynamics of guanosine in aqueous solution revealed by time-resolved photoelectron spectroscopy: experiment and theory

2015 ◽  
Vol 17 (47) ◽  
pp. 31978-31987 ◽  
Author(s):  
Franziska Buchner ◽  
Berit Heggen ◽  
Hans-Hermann Ritze ◽  
Walter Thiel ◽  
Andrea Lübcke
Keyword(s):  
Aqueous Solution ◽  
Excited State ◽  
Photoelectron Spectroscopy ◽  
Relaxation Dynamics ◽  
Time Resolved ◽  
Excited State Dynamics ◽  
Spectroscopy Experiment

Time-resolved photoelectron spectroscopy is performed on aqueous guanosine solution to study its excited-state relaxation dynamics.

Time‐resolved multiphoton ionization study of the 102 nm state of NO

1994 ◽  
Vol 101 (7) ◽  
pp. 5708-5716 ◽  
Author(s):  
J. C. Owrutsky ◽  
A. P. Baronavski
Keyword(s):  
Multiphoton Ionization ◽  
Time Resolved
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