Abstract
A picosecond stroboscopic pulse radiolysis system which consists of a femtosecond laser and a picosecond L-band linear accelerator (linac) is demonstrated. A newly installed femtosecond laser system operated at 960 Hz can cover a wide region of wavelength ranging from <300 nm to 10 μm, although the upper limit is 1.7 μm to date because of the sensitivity of photodetectors. In order to achieve a high accuracy of synchronization between the laser and the linac, a new timing and synchronization circuit was developed. A double pulse detection method was applied for the new system, resulting in doubling of the improvement in signal-to-noise ratio. The time resolution and time jitter were estimated from the rise time of hydrated electrons at 600 nm, and the transient absorption kinetics of electrons in n-dodecane was measured at 1300 nm.
Original language | English |
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Pages (from-to) | 627-633 |
Number of pages | 7 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 546 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2005 Jul 11 |
Externally published | Yes |
Keywords
- Femtosecond laser
- Linear accelerator
- Radiation chemistry
- Stroboscopic pulse radiolysis
- Synchronization
- Transient absorption spectroscopy in infrared
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation