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Attosecond Free-Electron Lasers

Asteazkena, Maiatzak 29, 2019 - 12:00
Place: 
Donostia International Physics Center
Who: 
Vitaliy Goryashko, Uppsala University, Sweden
Source Name: 
DIPC

The
ground-state electron in the hydrogen atom completes one cycle of revolution in
150 attoseconds. Some other processes in atoms and molecules are even faster.
Attosecond pulses of light can provide the resolution needed for studying
and ultimately controlling the attosecond dynamics of electrons in atoms and
molecules. Therefore, there is a strong scientific demand for the development
of sources of high-energy, attosecond pulses.



In this talk, I will (i) review the characteristic time and length scales in
atoms, molecules and nanostructures, (ii) outline the progress on short-pulse
generation over time and the state-of-the-art of production
of high-energy, ultrashort pulses; (iii) give some examples of attosecond
processes in atoms, (iv) discuss in detail novel concepts for the production of
attosecond pulses using electron bunches moving through periodic magnetic
fields created by the magnetic devices called undulators.

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