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Pulse radiolysis based on a femtosecond electron beam and a femtosecond laser light with double-pulse injection technique |
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| Affiliation: | 1. College of Physics Science and Technology & Institute of Optoelectronic Technology, Yangzhou University, Yangzhou 225002, PR China;2. National Laboratory of Solid State Microstructures and College of Physics, Nanjing University, Nanjing 210093, PR China;1. Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany;2. Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark;1. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China;2. Heilongjiang Province Key Laboratory of Optoelectronics and Laser Technology, Heilongjiang Institute of Technology, Harbin 150050, China |
| Abstract: | A new pulse radiolysis system based on a femtosecond electron beam and a femtosecond laser light with oblique double-pulse injection was developed for studying ultrafast chemical kinetics and primary processes of radiation chemistry. The time resolution of 5.2 ps was obtained by measuring transient absorption kinetics of hydrated electrons in water. The optical density of hydrated electrons was measured as a function of the electron charge. The data indicate that the double-laser-pulse injection technique was a powerful tool for observing the transient absorptions with a good signal to noise ratio in pulse radiolysis. |
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