Zobrazeno 1 - 10
of 17
pro vyhledávání: '"E J D Vredenbregt"'
Autor:
R M W van Bijnen, C Ravensbergen, D J Bakker, G J Dijk, S J J M F Kokkelmans, E J D Vredenbregt
Publikováno v:
New Journal of Physics, Vol 17, Iss 2, p 023045 (2015)
We demonstrate the ability to excite atoms at well-defined, programmable locations in a magneto-optical trap, either to the continuum (ionization), or to a Rydberg state. To this end, excitation laser light is shaped into arbitrary intensity patterns
Externí odkaz:
https://doaj.org/article/5ad85e3a4a46453c95ccf81c5fb81317
Publikováno v:
New Journal of Physics, Vol 15, Iss 12, p 123015 (2013)
The influence has been studied of the ionization laser polarization on the effective temperature of an ultracold electron source, which is based on near-threshold photoionization. This source is capable of producing both high-intensity and high-coher
Externí odkaz:
https://doaj.org/article/e76f1ff6b3bd48b6a901243d3a9e7773
Publikováno v:
Structural Dynamics, Vol 4, Iss 4, Pp 044010-044010-15 (2017)
We present measurements of the pulse length of ultracold electron bunches generated by near-threshold two-photon photoionization of a laser-cooled gas. The pulse length has been measured using a resonant 3 GHz deflecting cavity in TM110 mode. We have
Externí odkaz:
https://doaj.org/article/b1c0f0a2d66141a69b6380d5941561d2
Publikováno v:
Journal of Vacuum Science and Technology B, 40(4):042801. AVS Science and Technology Society
Several ion source alternatives for current focused ion beam (FIB) systems have been studied to achieve higher brightness, including cold atom ion sources. However, a study of ultracold ions interacting with often used materials is seldom reported. H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02bd059396d4d3e5342732d2e39b0dd9
Publikováno v:
Structural Dynamics, Vol 1, Iss 3, Pp 034302-034302-7 (2014)
The study of structural dynamics of complex macromolecular crystals using electrons requires bunches of sufficient coherence and charge. We present diffraction patterns from graphite, obtained with bunches from an ultracold electron source, based
Externí odkaz:
https://doaj.org/article/58d0f7e070c74b93be67306f745f1c54
Autor:
G. Taban, M. P. Reijnders, S. C. Bell, S. B. van der Geer, O. J. Luiten, E. J. D. Vredenbregt
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 11, Iss 5, p 050102 (2008)
We describe here a specially designed accelerator structure and a pulsed power supply that are essential parts of a high brightness cold atoms-based electron source. The accelerator structure allows a magneto-optical atom trap to be operated inside o
Externí odkaz:
https://doaj.org/article/7534973a64e7434c94f80f61ecf97fc9
Autor:
E. J. D. Vredenbregt, M. J. Bellanca, F. N. Chi, Harold Metcalf, W. F. Buell, M. T. Widmer, M. R. Doery, T. H. Bergeman
Publikováno v:
Coherence and Quantum Optics VII ISBN: 9781475797442
When atoms are laser cooled to below the single photon recoil limit, their deBroglie wavelengths become comparable to or larger than the wavelength of light used to cool them. To describe properly the physics in this regime, it is necessary to quanti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9db6a3bc2e9106c063fd57daf60b5db3
https://doi.org/10.1007/978-1-4757-9742-8_61
https://doi.org/10.1007/978-1-4757-9742-8_61
Publikováno v:
Journal of Physics B: Atomic, Molecular & Optical Physics; 4/28/2020, Vol. 53 Issue 8, p1-1, 1p
Publikováno v:
Journal of Physics B: Atomic, Molecular & Optical Physics; 2/14/2018, Vol. 51 Issue 3, p1-1, 1p
Autor:
S J J M F Kokkelmans, E J D Vredenbregt, R M W van Bijnen, C Ravensbergen, D J Bakker, G J Dijk
Publikováno v:
New Journal of Physics; Feb2015, Vol. 17 Issue 2, p1-1, 1p