69 citations · 243 across the 17 of their papers we have counts for
17 papers
Direct Observation of Sub-Poissonian Temporal Statistics in a Continuous Free Electron Beam with Sub-picosecond Resolution
S. Borrelli, T. C. H. de Raadt, P. H. A. Mutsaers +2
We present a novel method to measure the arrival time statistics of continuous electron beams with sub-ps resolution, based on the combination of an RF deflection cavity and fast s…
RF acceleration of ultracold electron bunches
D. F. J. Nijhof, T. C. H. de Raadt, J. V. Huijts +3
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 electr…
Design and optimization of a 100 keV DC/RF ultracold electron source
D. F. J. Nijhof, P. H. A. Mutsaers, O. J. Luiten
An ultracold electron source based on near-threshold photoionization of a laser-cooled and trapped atomic gas is presented in this work. Initial DC acceleration to 10 keV and…
Concept Study of a Compact, High Gradient X-band Travelling Wave RF Photogun with Novel Laser Coupling Scheme
Thomas Geoffrey Lucas, Peter Mutsaers, Jom Luiten
This paper presents the design of a travelling wave RF photogun operating at the European X-band frequency of 11.994 GHz. The design is based on a CLIC prototype structure milled f…
Gigahertz repetition rate thermionic electron gun concept
W. F. Toonen, X. F. D. Stragier, P. H. A. Mutsaers +1
We present a novel concept for the generation of gigahertz repetition rate high brightness electron bunches. A custom design 100 kV thermionic gun provides a continuous electron be…
Dual mode microwave deflection cavities for ultrafast electron microscopy
J. F. M. van Rens, W. Verhoeven, E. R. Kieft +2
This paper presents the experimental realization of an ultrafast electron microscope operating at a repetition rate of 75 MHz based on a single compact resonant microwave cavity op…
Design and characterization of dielectric filled TM microwave cavities for ultrafast electron microscopy
W. Verhoeven, J. F. M. van Rens, A. H. Kemper +6
Microwave cavities oscillating in the TM mode can be used as dynamic electron-optical elements inside an electron microscope. By filling the cavity with a dielectric materi…
Time-of-Flight Electron Energy Loss Spectroscopy by Longitudinal Phase Space Manipulation with Microwave Cavities
W. Verhoeven, J. F. M. van Rens, W. F. Toonen +3
The possibility to perform high-resolution time-resolved electron energy loss spectroscopy has the potential to impact a broad range of research fields. Resolving small energy loss…
Measurements of the energy distribution of an ultracold rubidium ion beam
G. ten Haaf, S. H. W. Wouters, D. F. J. Nijhof +2
The energy distribution of an ultracold rubidium ion beam, which is intended to be used as the source for a focused ion beam instrument, is measured with a retarding field analyzer…
High quality ultrafast transmission electron microscopy using resonant microwave cavities
W. Verhoeven, J. F. M. van Rens, E. R. Kieft +2
Ultrashort, low-emittance electron pulses can be created at a high repetition rate by using a TM deflection cavity to sweep a continuous beam across an aperture. These puls…
Cavity-enhanced photoionization of an ultracold rubidium beam for application in focused ion beams
G. ten Haaf, S. H. W. Wouters, P. H. A. Mutsaers +1
A two-step photoionization strategy of an ultracold rubidium beam for application in a focused ion beam instrument is analyzed and implemented. In this strategy the atomic beam is…
Theory and particle tracking simulations of a resonant radiofrequency deflection cavity in TM mode for ultrafast electron microscopy
J. F. M. van Rens, W. Verhoeven, J. G. H. Franssen +5
We present a theoretical description of resonant radiofrequency (RF) deflecting cavities in TM mode as dynamic optical elements for ultrafast electron microscopy. We first…
Direct magneto-optical compression of an effusive atomic beam for high-resolution focused ion beam application
G. ten Haaf, T. C. H. de Raadt, G. P. Offermans +4
An atomic rubidium beam formed in a 70 mm long two-dimensional magneto-optical trap (2D MOT), directly loaded from a collimated Knudsen source, is analyzed using laser-induced fluo…
Design and experimental validation of a compact collimated Knudsen source
Steinar H W Wouters, Gijs ten Haaf, Peter H A Mutsaers +1
In this paper we discuss the design and performance of a collimated Knudsen source which has the benefit of a simple design over recirculating sources. Measurements of the flux, tr…
Performance predictions for a laser intensified thermal beam for use in high resolution Focused Ion Beam instruments
S. H. W. Wouters, G. ten Haaf, R. P. M. J. W. Notermans +4
Photo-ionization of a laser-cooled and compressed atomic beam from a high-flux thermal source can be used to create a high-brightness ion beam for use in Focus Ion Beam (FIB) instr…
Performance predictions of a focused ion beam from a laser cooled and compressed atomic beam
G. ten Haaf, S. H. W. Wouters, S. B. van der Geer +2
Focused ion beams are indispensable tools in the semiconductor industry because of their ability to image and modify structures at the nanometer length scale. Here we report on per…
Measurement of the temperature of an ultracold ion source using time-dependent electric fields
N. Debernardi, M. P. Reijnders, W. J. Engelen +4
We report on a measurement of the characteristic temperature of an ultracold rubidium ion source, in which a cloud of laser-cooled atoms is converted to ions by photo-ionization. E…