High-repetition rate attosecond beamline for multi-particle coincidence experiments

Area of Science:

• Atomic and Molecular Physics
• Ultrafast Science
• Spectroscopy

Background:

• Attosecond science enables probing electron dynamics.
• High-resolution 3D momentum spectroscopy is crucial for detailed analysis.
• Existing setups may have limitations in temporal stability or solid-angle coverage.

Purpose of the Study:

• To present a novel 3D photoelectron/ion momentum spectrometer (reaction microscope) integrated with a table-top attosecond beamline.
• To demonstrate the capability of achieving sub-50 attosecond temporal stability.
• To showcase the system's effectiveness in studying ultrafast dynamics in atomic and molecular systems.

Main Methods:

• Utilized a high-repetition rate (49 kHz) laser source for the attosecond beamline.
• Integrated the beamline with a 3D photoelectron/ion momentum spectrometer (reaction microscope).
• Performed measurements on molecular hydrogen and argon dimer systems.

Main Results:

• Achieved temporal stability below 50 attoseconds.
• Successfully observed attosecond dynamics in 3D for molecular hydrogen and argon dimers.
• Demonstrated full solid-angle coverage for low cross-section ionization processes.

Conclusions:

• The presented setup offers unprecedented capabilities for 3D attosecond dynamics studies.
• The system is suitable for investigating complex ionization processes with high precision.
• This advancement opens new avenues for exploring ultrafast electron behavior in matter.