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Updated: Oct 28, 2025

Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet VUV Synchrotron Radiation
Published on: October 30, 2012
Vacuum ultraviolet coherent undulator radiation from attosecond electron bunches
Enrico Brunetti1,2, Bas van der Geer3, Marieke de Loos3
1SUPA, Department of Physics, University of Strathclyde, Glasgow, UK. enrico.brunetti@strath.ac.uk.
Abstract:
Attosecond duration relativistic electron bunches travelling through an undulator can generate brilliant coherent radiation in the visible to vacuum ultraviolet spectral range. We present comprehensive numerical simulations to study the properties of coherent emission for a wide range of electron energies and bunch durations, including space-charge effects. These demonstrate that electron bunches with r.m.s. duration of 50 as, nominal charge of 0.1 pC and energy range of 100-250 MeV produce [Formula: see text] coherent photons per pulse in the 100-600 nm wavelength range. We show that this can be enhanced substantially by self-compressing negatively chirped 100 pC bunches in the undulator to produce [Formula: see text] coherent photons with pulse duration of 0.5-3 fs.
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