Anisotropy in Time-Resolved Photoelectron Spectroscopy in the Gas Phase

2017 ◽  
Vol 121 (50) ◽  
pp. 9612-9618
Author(s):  
Oliver Schalk ◽  
Andrey E. Boguslavskiy
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Time Resolved

Internal conversion and intersystem crossing dynamics of uracil upon double thionation: a time-resolved photoelectron spectroscopy study in the gas phase

2020 ◽  
Vol 22 (27) ◽  
pp. 15608-15615
Author(s):  
Abed Mohamadzade ◽  
Susanne Ullrich
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Internal Conversion ◽  
Intersystem Crossing ◽  
Spectroscopy Study ◽  
Time Resolved

Gas-phase photophysics of 2,4-dithiouracil studied by time-resolved photoelectron spectroscopy.

scholarly journals Using time-resolved photoelectron spectroscopy to unravel the electronic relaxation dynamics of photoexcited molecules

2018 ◽  
Vol 47 (2) ◽  
pp. 309-321 ◽  
Author(s):  
Helen H. Fielding ◽  
Graham A. Worth
Keyword(s):  
Quantum Chemistry ◽  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Electronic Relaxation ◽  
Relaxation Dynamics ◽  
Time Resolved ◽  
Insight Into

Time-resolved photoelectron spectroscopy measurements combined with quantum chemistry and dynamics calculations allow unprecedented insight into the electronic relaxation mechanisms of photoexcited molecules in the gas-phase.

Direct observation of slow intersystem crossing in an aromatic ketone, fluorenone

2016 ◽  
Vol 18 (33) ◽  
pp. 22914-22920 ◽  
Author(s):  
Benoît Soep ◽  
Jean-Michel Mestdagh ◽  
Marc Briant ◽  
Marc-André Gaveau ◽  
Lionel Poisson
Keyword(s):  
Gas Phase ◽  
Direct Observation ◽  
Photoelectron Spectroscopy ◽  
Aromatic Ketone ◽  
Intersystem Crossing ◽  
Time Resolved ◽  
Direct Measurements ◽  
Vibronic Level

Direct measurements of Single vibronic Level InterSystem Crossing (SLISC) performed on the fluorenone molecule in the gas phase, by time resolved photoelectron spectroscopy, revealed the dramatic importance of its structure on intersystem crossing.

scholarly journals Attosecond intra-valence band dynamics and resonant-photoemission delays in W(110)

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
S. Heinrich ◽  
T. Saule ◽  
M. Högner ◽  
Y. Cui ◽  
V. S. Yakovlev ◽  
...  
Keyword(s):  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Electronic Band Structure ◽  
Photoelectric Effect ◽  
Final State ◽  
Electronic Band ◽  
Time Resolved ◽  
Resonant Photoemission ◽  
Pulse Trains ◽  
Electron Correlation Effects

AbstractTime-resolved photoelectron spectroscopy with attosecond precision provides new insights into the photoelectric effect and gives information about the timing of photoemission from different electronic states within the electronic band structure of solids. Electron transport, scattering phenomena and electron-electron correlation effects can be observed on attosecond time scales by timing photoemission from valence band states against that from core states. However, accessing intraband effects was so far particularly challenging due to the simultaneous requirements on energy, momentum and time resolution. Here we report on an experiment utilizing intracavity generated attosecond pulse trains to meet these demands at high flux and high photon energies to measure intraband delays between sp- and d-band states in the valence band photoemission from tungsten and investigate final-state effects in resonant photoemission.

Photoelectron Spectroscopy and Theoretical Study of AlnC5-/0 (n = 1-5) clusters: Structural Evolution, Relative Stability of Star-Like Cluster, and Planar Tetracoordinate Carbon Structure

2021 ◽  
Author(s):  
Chao-Jiang Zhang ◽  
Peng Wang ◽  
Xi-Ling Xu ◽  
Hong-Guang Xu ◽  
Weijun Zheng
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Relative Stability ◽  
Theoretical Study ◽  
Structural Evolution ◽  
Carbon Structure ◽  
Anion Photoelectron Spectroscopy

The AlnC5- (n = 1-5) clusters were detected in the gas-phase and were investigated by mass-selected anion photoelectron spectroscopy. The structures of AlnC5-/0 (n = 1-5) were explored by theoretical...

scholarly journals Dry Etching Performance and Gas-Phase Parameters of C6F12O + Ar Plasma in Comparison with CF4 + Ar

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1595
Author(s):  
Nomin Lim ◽  
Yeon Sik Choi ◽  
Alexander Efremov ◽  
Kwang-Ho Kwon
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Reactive Ion Etching ◽  
Research Work ◽  
Optical Emission ◽  
Plasma Parameters ◽  
Ion Etching ◽  
Ar Plasma ◽  
Ar Gas ◽  
Etching Selectivity

This research work deals with the comparative study of C6F12O + Ar and CF4 + Ar gas chemistries in respect to Si and SiO2 reactive-ion etching processes in a low power regime. Despite uncertain applicability of C6F12O as the fluorine-containing etchant gas, it is interesting because of the liquid (at room temperature) nature and weaker environmental impact (lower global warming potential). The combination of several experimental techniques (double Langmuir probe, optical emission spectroscopy, X-ray photoelectron spectroscopy) allowed one (a) to compare performances of given gas systems in respect to the reactive-ion etching of Si and SiO2; and (b) to associate the features of corresponding etching kinetics with those for gas-phase plasma parameters. It was found that both gas systems exhibit (a) similar changes in ion energy flux and F atom flux with variations on input RF power and gas pressure; (b) quite close polymerization abilities; and (c) identical behaviors of Si and SiO2 etching rates, as determined by the neutral-flux-limited regime of ion-assisted chemical reaction. Principal features of C6F12O + Ar plasma are only lower absolute etching rates (mainly due to the lower density and flux of F atoms) as well as some limitations in SiO2/Si etching selectivity.

Preliminary studies of UV photolysis of gas-phase CH3I in air: Time-resolved infrared identification of methanol and formaldehyde products

2021 ◽  
Vol 768 ◽  
pp. 138403
Author(s):  
Kendall D. Hughey ◽  
Russell G. Tonkyn ◽  
Warren W. Harper ◽  
Valerie L. Young ◽  
Tanya L. Myers ◽  
...  
Keyword(s):  
Gas Phase ◽  
Time Resolved ◽  
Uv Photolysis

scholarly journals Negative ion photoelectron spectroscopy confirms the prediction that D3h carbon trioxide (CO3) has a singlet ground state

2016 ◽  
Vol 7 (2) ◽  
pp. 1142-1150 ◽  
Author(s):  
David A. Hrovat ◽  
Gao-Lei Hou ◽  
Bo Chen ◽  
Xue-Bin Wang ◽  
Weston Thatcher Borden
Keyword(s):  
Gas Phase ◽  
Ground State ◽  
Photoelectron Spectroscopy ◽  
Radical Anion ◽  
Negative Ion ◽  
Singlet Ground State

The CO3 radical anion (CO3˙−) has been formed by electrospraying carbonate dianion (CO32−) into the gas phase.

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