Pulse radiolysis of liquid water using picosecond electron pulses produced by a table-top terawatt laser system

Ned Saleh, Kirk Flippo, Koshichi Nemoto, Donald Umstadter, Robert A. Crowell, Charles D. Jonah, Alexander D. Trifunac

Research output: Contribution to journalArticle

24 Scopus citations


A laser based electron generator is shown, for the first time, to produce sufficient charge to conduct time resolved investigations of radiation induced chemical events. Electron pulses generated by focussing terawatt laser pulses into a supersonic helium gas jet are used to ionize liquid water. The decay of the hydrated electrons produced by the ionizing electron pulses is monitored with 0.3 μs time resolution. Hydrated electron concentrations as high as 22 μM were generated. The results show that terawatt lasers offer both an alternative to linear accelerators and a means to achieve subpicosecond time resolution for pulse radiolysis studies.

Original languageEnglish (US)
Pages (from-to)2305-2308
Number of pages4
JournalReview of Scientific Instruments
Issue number6
StatePublished - Jun 2000


ASJC Scopus subject areas

  • Instrumentation

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