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Evidence for chirped Auger-electron emission.
B Schütte1, S Bauch, U Frühling
1Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
Physical Review Letters
|September 26, 2012
Summary
Auger electrons can exhibit an energetic chirp due to energy exchange with correlated photoelectrons. This finding, observed in Xenon and Krypton, reveals new insights into atomic and molecular electronic dynamics.
Area of Science:
- Atomic and Molecular Physics
- Quantum Dynamics
- Solid-State Spectroscopy
Background:
- Auger decay is a fundamental process providing insights into electronic structure.
- Understanding electron dynamics is crucial for atomic, molecular, and solid-state physics.
Purpose of the Study:
- To investigate the energetic behavior of Auger electrons under specific experimental conditions.
- To explore the phenomenon of energetic chirp in Auger decay.
- To elucidate the underlying physical mechanisms responsible for this effect.
Main Methods:
- Time-resolved streaking experiments utilizing extreme-ultraviolet pulses.
- Investigation of Xenon (Xe) NOO and Krypton (Kr) MNN Auger decay.
- Employing free-electron laser (FEL) and high-order harmonic generation (HHG) laser sources.
- Development of an analytical model and extensive computer simulations.
Main Results:
- Evidence of an energetic chirp in Auger electrons was observed.
- The chirp originates from energy exchange between Auger electrons and correlated photoelectrons.
- Time-dependent spectral modulations were detected and analyzed.
Conclusions:
- Auger electrons can exhibit an energetic chirp under specific conditions.
- This chirp is attributed to electron-electron energy exchange.
- The findings enhance our understanding of electronic dynamics in atomic and molecular systems.
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