scholarly journals Time-Resolved Radiation Chemistry: Photoelectron Imaging of Transient Negative Ions of Nucleobases

2013 ◽  
Vol 135 (6) ◽  
pp. 2128-2131 ◽  
Author(s):  
Margaret A. Yandell ◽  
Sarah B. King ◽  
Daniel M. Neumark
Keyword(s):  
Negative Ions ◽  
Radiation Chemistry ◽  
Photoelectron Imaging ◽  
Time Resolved

scholarly journals Real-time observation of water radiolysis and hydrated electron formation induced by extreme-ultraviolet pulses

2020 ◽  
Vol 6 (3) ◽  
pp. eaaz0385 ◽  
Author(s):  
Vít Svoboda ◽  
Rupert Michiels ◽  
Aaron C. LaForge ◽  
Jakub Med ◽  
Frank Stienkemeier ◽  
...  
Keyword(s):  
Radiation Damage ◽  
Water Clusters ◽  
Extreme Ultraviolet ◽  
Radiation Chemistry ◽  
Ab Initio Molecular Dynamics ◽  
Water Radiolysis ◽  
Photoelectron Imaging ◽  
Time Resolved ◽  
Imaging Results ◽  
Comprehensive Picture

The dominant pathway of radiation damage begins with the ionization of water. Thus far, however, the underlying primary processes could not be conclusively elucidated. Here, we directly study the earliest steps of extreme ultraviolet (XUV)–induced water radiolysis through one-photon excitation of large water clusters using time-resolved photoelectron imaging. Results are presented for H2O and D2O clusters using femtosecond pump pulses centered at 133 or 80 nm. In both excitation schemes, hydrogen or proton transfer is observed to yield a prehydrated electron within 30 to 60 fs, followed by its solvation in 0.3 to 1.0 ps and its decay through geminate recombination on a ∼10-ps time scale. These results are interpreted by comparison with detailed multiconfigurational non-adiabatic ab-initio molecular dynamics calculations. Our results provide the first comprehensive picture of the primary steps of radiation chemistry and radiation damage and demonstrate new approaches for their study with unprecedented time resolution.

scholarly journals Time-resolved photoelectron imaging using a femtosecond UV laser and a VUV free-electron laser

2010 ◽  
Vol 81 (3) ◽  
Author(s):  
S. Y. Liu ◽  
Y. Ogi ◽  
T. Fuji ◽  
K. Nishizawa ◽  
T. Horio ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Uv Laser ◽  
Photoelectron Imaging ◽  
Time Resolved

Dynamics of dipole- and valence bound anions in iodide-adenine binary complexes: A time-resolved photoelectron imaging and quantum mechanical investigation

2015 ◽  
Vol 143 (10) ◽  
pp. 104308 ◽  
Author(s):  
Anne B. Stephansen ◽  
Sarah B. King ◽  
Yuki Yokoi ◽  
Yusuke Minoshima ◽  
Wei-Li Li ◽  
...  
Keyword(s):  
Quantum Mechanical ◽  
Photoelectron Imaging ◽  
Time Resolved ◽  
Binary Complexes ◽  
Mechanical Investigation

scholarly journals Ultrafast Internal Conversion Dynamics of 2-Chloropyridine by Femtosecond Time-Resolved Photoelectron Imaging

2012 ◽  
Vol 28 (11) ◽  
pp. 2543-2548
Author(s):  
GHAZAl Ahmed-Yousif ◽  
◽  
QIU Xue-Jun ◽  
QIN Chao-Chao ◽  
LONG Jin-You ◽  
...  
Keyword(s):  
Internal Conversion ◽  
Photoelectron Imaging ◽  
Time Resolved

Unraveling the electronic relaxation dynamics in photoexcited 2,4-difluoroaniline via femtosecond time-resolved photoelectron imaging

2018 ◽  
Vol 148 (14) ◽  
pp. 144311 ◽  
Author(s):  
Fengzi Ling ◽  
Shuai Li ◽  
Jie Wei ◽  
Kai Liu ◽  
Yanmei Wang ◽  
...  
Keyword(s):  
Electronic Relaxation ◽  
Relaxation Dynamics ◽  
Photoelectron Imaging ◽  
Time Resolved

Ultrafast Internal Conversion Dynamics of Benzyl Chloride by Femtosecond Time-Resolved Photoelectron Imaging

2012 ◽  
Vol 28 (12) ◽  
pp. 2761-2766
Author(s):  
DING Zhong-Hua ◽  
◽  
◽  
QIU Xue-Jun ◽  
XU Yan-Qi ◽  
...  
Keyword(s):  
Benzyl Chloride ◽  
Internal Conversion ◽  
Photoelectron Imaging ◽  
Time Resolved

Determination of ionization dynamical parameters by time-resolved photoelectron imaging

2007 ◽  
Vol 105 (11-12) ◽  
pp. 1675-1693 ◽  
Author(s):  
Yoshi-Ichi Suzuki ◽  
Toshinori Suzuki
Keyword(s):  
Photoelectron Imaging ◽  
Time Resolved ◽  
Dynamical Parameters
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