Ultrafast laser-driven microlens to focus and energy-select mega-electron volt protons

T. Toncian, Marco Borghesi, J. Fuchs, E. D'Humieres, P. Antici, P. Audebert, E. Brambrink, C.A. Cecchetti, A. Pipahl, L. Romagnani, O. Willi

Research output: Contribution to journalArticlepeer-review

284 Citations (Scopus)


We present a technique for simultaneous focusing and energy selection of high-current, mega-electron volt proton beams With the use of radial, transient electric fields (107 to 1010 volts per meter) triggered on the inner walls of a hollow microcylinder by an intense subpicosecond laser pulse. Because of the transient nature of the focusing fields, the proposed method allows selection of a desired range out of the spectrum of the polyenergetic proton beam. This technique addresses current drawbacks of laser-accelerated proton beams, such as their broad spectrum and divergence at the source.
Original languageEnglish
Pages (from-to)410-413
Number of pages4
Issue number5772
Publication statusPublished - 21 Apr 2006

ASJC Scopus subject areas

  • General


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