Nanosecond kinetics of hydrated electrons upon water photolysis by high intensity femtosecond UV pulses

Nanosecond kinetics of hydrated electrons upon water photolysis by high intensity femtosecond UV... We report a nanosecond laser study of the transient absorption of hydrated electrons generated by multiphoton ionisation of liquid water upon excitation at 266 and 400 nm by femtosecond pulses with power densities higher than 1 TW/cm2. For both wavelengths, as the pump power density increases, the signal amplitude increases and the decay becomes faster proving that more electrons are produced. However, we show that in the nanosecond time range, under pump power densities higher than 1 TW/cm2, the distribution of the hydrated electrons is not uniform along the optical pathway of the pump beam in the water sample. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Nanosecond kinetics of hydrated electrons upon water photolysis by high intensity femtosecond UV pulses

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Publisher
Brill Academic Publishers
Copyright
Copyright © 2001 by VSP 2001
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/15685670152622167
Publisher site
See Article on Publisher Site

Abstract

We report a nanosecond laser study of the transient absorption of hydrated electrons generated by multiphoton ionisation of liquid water upon excitation at 266 and 400 nm by femtosecond pulses with power densities higher than 1 TW/cm2. For both wavelengths, as the pump power density increases, the signal amplitude increases and the decay becomes faster proving that more electrons are produced. However, we show that in the nanosecond time range, under pump power densities higher than 1 TW/cm2, the distribution of the hydrated electrons is not uniform along the optical pathway of the pump beam in the water sample.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 7, 2004

References

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