A5051837434- Cold Atom Physics and Bose-Einstein Condensates
- Advanced X-ray Imaging Techniques
- Atomic and Molecular Physics
- Radioactive Decay and Measurement Techniques
- Laser-Matter Interactions and Applications
- Particle Accelerators and Free-Electron Lasers
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Subatomic Physics Research
- Pulsed Power Technology Applications
- Advanced Materials Characterization Techniques
- Quantum Information and Cryptography
- Photocathodes and Microchannel Plates
- Electron and X-Ray Spectroscopy Techniques
- Laser-Plasma Interactions and Diagnostics
- Advanced Frequency and Time Standards
- Advancements in Photolithography Techniques
- Advanced Electron Microscopy Techniques and Applications
Eindhoven University of Technology
2017-2024
Lawrence Berkeley National Laboratory
2019
Guiding of relativistically intense laser pulses with peak power 0.85 PW over 15 diffraction lengths was demonstrated by increasing the focusing strength a capillary discharge waveguide using inverse bremsstrahlung heating. This allowed for production electron beams quasimonoenergetic peaks up to 7.8 GeV, double energy that previously demonstrated. Charge 5 pC at GeV and 62 in 6 peaks, typical beam divergence 0.2 mrad.
We present the first observation of subpicosecond electron bunches from an ultracold source. This source is based on near-threshold, two-step, femtosecond photoionization laser-cooled rubidium gas in a grating magneto-optical trap. Bunch lengths as short 735±7 fs (rms) have been measured self-compression point by means ponderomotive scattering electrons 25 fs, 800 nm laser pulse. The observed temporal structure bunch depends central wavelength ionization pulse, agreement with detailed...
The ultrafast and ultracold electron source, based on near-threshold photoionization of a laser-cooled trapped atomic gas, offers unique combination low transverse beam emittance high bunch charge. Its use is however still limited because the required cold-atom laser-cooling techniques. Here we present compact source grating magneto-optical trap (GMOT), which only requires one trapping laser that passes through transparent accelerator module. This makes technique more widely accessible...
We present a novel method to measure the arrival time statistics of continuous electron beams with subpicosecond resolution, based on combination an rf deflection cavity and fast single imaging. observe Poissonian within bins from 100 2 ns increasingly pronounced sub-Poissonian as bin decreases ps 340 fs. This 2D streak camera, in principle, enables femtosecond-level measurements, paving way observing Pauli blocking effects thus serving essential diagnostic tool toward degenerate beam...
An atomic rubidium beam formed in a 70 mm long two-dimensional magneto-optical trap (2D MOT), directly loaded from collimated Knudsen source, is analyzed using laser-induced fluorescence. The longitudinal velocity distribution, the transverse temperature and flux of are reported. equivalent reduced brightness an ion with similar properties as calculated because developed to be photoionized applied focused beam. In single trapping step $(1.0\substack{+0.8-0.4})$ $\times 10^6$ A/(m$^2$ sr eV)...
The ultrafast and ultracold electron source, based on laser cooling trapping of atomic gas its subsequent near-threshold two-step photoionization, is capable generating bunches with a high transverse brightness at energies roughly 10 keV. This paper investigates the possibility increasing range applications this source by accelerating bunch using radio frequency electromagnetic fields. Bunch up to 35 keV are measured analyzing diffraction patterns generated from mono-crystalline gold sample....
Electromagnetic radiation in the soft x-ray spectral range ($1-100~\rm{nm}$ wavelengths or $0.01-1~\rm{keV}$ photon energies) is rapidly gaining importance both fundamental research and industrial applications. At present degree of coherence average flux required by advanced applications only available at large-scale synchrotron facilities Free Electron Lasers (FELs), severely limiting We propose a fully coherent source, based on Inverse Compton Scattering (ICS) electron bunches created...
The ultrafast and ultracold electron source, based on laser cooling trapping of an atomic gas its subsequent near-threshold photoionization, is capable generating bunches with a high transverse brightness at energies roughly 10 keV. This paper investigates the possibility increasing range applications this source by accelerating bunch using radio-frequency electromagnetic fields. Bunch $\sim35$ keV are measured analyzing diffraction patterns generated from mono-crystalline gold sample....
We present a novel method to measure the arrival time statistics of continuous electron beams with sub-ps resolution, based on combination an RF deflection cavity and fast single imaging. observe Poissonian within bins from 100~ns 2~ns increasingly pronounced sub-Poissonian as bin decreases 2~ps 340~fs. This 2D streak-camera in principle enables femtosecond-level measurements, paving way observing Pauli blocking effects thus serving essential diagnostic tool towards degenerate beam sources...
Electron bunches from a photoionized ultracold atomic gas enable the generation of spatially coherent soft-X-ray pulses trough inverse Compton scattering. Combined with at source prebunching, compact, fully soft X-ray is proposed.