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arXiv · 2306.05022

RF acceleration of ultracold electron bunches

D. F. J. Nijhof·T. C. H. de Raadt·J. V. Huijts·J. G. H. Franssen·P. H. A. Mutsaers·O. J. Luiten
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Abstract

The ultrafast and ultracold electron source, based on laser cooling and trapping of an atomic gas and its subsequent near-threshold photoionization, is capable of generating electron bunches with a high transverse brightness at energies of roughly 10 keV. This paper investigates the possibility of increasing the range of applications of this source by accelerating the bunch using radio-frequency electromagnetic fields. Bunch energies of $\sim35$ keV are measured by analyzing the diffraction patterns generated from a mono-crystalline gold sample. Further analysis points to a largely preserved normalized transverse emittance during acceleration.

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D. F. J. Nijhof, T. C. H. de Raadt, J. V. Huijts, J. G. H. Franssen, P. H. A. Mutsaers, O. J. Luiten. 2023-06-08. RF acceleration of ultracold electron bunches. https://arxiv.org/abs/2306.05022

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