In order to investigate the early events in radiation physics and chemistry, a new pulse radiolysis system with higher time resolution based on the pump-and-probe method has been developed at Nuclear Engineering Research Laboratory (NERL), The University of Tokyo. Electron pulses with duration of a few picoseconds are generated from an 18 MeV S-band linear accelerator (linac) by using a combination of a laser photocathode rf-gun and a chicane-type magnetic compressor. The pulses are synchronized with a femtosecond laser pulse as the analyzing light. The precision of synchronization between the pump and the probe has attained within 1.6 ps (rms). By converting the fundamental laser into white light continuum, it allows to measure in the wavelength range from 400 to 1100 nm. With a sample cell having an optical path of 1 mm, a time resolution of 5 ps has been achieved.
Research on Chemical Intermediates – Springer Journals
Published: Jan 1, 2005
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