https://doi.org/10.1140/epjd/s10053-024-00851-5
Regular Article - Atomic Physics
High repetition rate sub-ns electron pulses from pulsed-resonance Rydberg field-ionization (PRRFI)
1
Université Paris-Saclay, CNRS, Laboratoire Aimé Cotton, 91405, Orsay, France
2
Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093, Zurich, Switzerland
b
daniel.comparat@universite-paris-saclay.fr
Received:
21
March
2024
Accepted:
18
April
2024
Published online:
1
June
2024
We demonstrate a novel technique, Pulsed-Resonance Rydberg Field-ionization (PRRFI), to generate low-energy electron bunches at high repetition rates. By combining continuous-wave laser excitation with a pulsed electric field, this method selectively ionizes Rydberg–Stark states in cesium atoms, producing sub-ns long electron bunches (down to 
) at a repetition rate of 
. The method is demonstrated to offer significant advantages in terms of flexibility in the ionization repetition rate and pulse delay adjustments. The PRRFI method holds promises for applications in high-resolution electron microscopy and spectroscopy, potentially for overcoming the limitations of traditional electron sources in terms of brightness and energy spread.
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