Zobrazeno 1 - 10
of 794
pro vyhledávání: '"Leeuwen, K."'
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 single electron imaging. We observe Poissonian statistics within time b
Externí odkaz:
http://arxiv.org/abs/2310.09248
Autor:
van Leeuwen, K. A. H., Schaap, W. J., Buijsse, B., Borelli, S., Kempers, S. T., Verhoeven, W., Luiten, O. J.
We propose a scheme for constructing a phase plate for use in an ultrafast Zernike-type phase contrast electron microscope, based on the interaction of the electron beam with a strongly focused, high-power femtosecond laser pulse and a pulsed electro
Externí odkaz:
http://arxiv.org/abs/2209.03201
Akademický článek
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Autor:
Baetens, I., Greene, D., Van Hove, L., Van Leeuwen, K., Wiersema, J.R., Desoete, A., Roelants, M.
Publikováno v:
In Journal of Adolescence July 2021 90:100-108
Autor:
van Bijnen, R. M. W., Smit, S., van Leeuwen, K. A. H., Vredenbregt, E. J. D., Kokkelmans, S. J. J. M. F.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 44 (2011) 184008
Ultracold atomic gases have been used extensively in recent years to realize textbook examples of condensed matter phenomena. Recently, phase transitions to ordered structures have been predicted for gases of highly excited, 'frozen' Rydberg atoms. S
Externí odkaz:
http://arxiv.org/abs/1103.2096
Using direct-write atom lithography, Fe nanolines are deposited with a pitch of 186 nm, a full width at half maximum (FWHM) of 50 nm, and a height of up to 6 nm. These values are achieved by relying on geometrical collimation of the atomic beam, thus
Externí odkaz:
http://arxiv.org/abs/0908.2733
We report on a new technique to split an atomic beam coherently with an easily adjustable splitting angle. In our experiment metastable helium atoms in the |{1s2s}^3S_1 M=1> state diffract from a polarization gradient light field formed by counterpro
Externí odkaz:
http://arxiv.org/abs/0811.3394
Autor:
van Loon, M. S., van Leeuwen, K. M., Ostelo, R. W. J. G., Bosnians, J. E., Widdershoven, G. A. M.
Publikováno v:
Quality of Life Research, 2018 May 01. 27(5), 1181-1189.
Externí odkaz:
https://www.jstor.org/stable/44856236
Autor:
van Leeuwen, K. A. H., Vassen, W.
An experiment is proposed to excite the 'forbidden' 1s2s 3S1 - 1s2s 1S0 magnetic dipole (M1) transition at 1557 nm in a collimated and slow atomic beam of metastable helium atoms. It is demonstrated that an excitation rate of 5000 /s can be realised
Externí odkaz:
http://arxiv.org/abs/physics/0609087
Autor:
Stuetzle, R., Goebel, M. C., Hoerner, T., Kierig, E., Mourachko, I., Oberthaler, M. K., Efremov, M. A., Fedorov, M. V., Yakovlev, V. P., van Leeuwen, K. A. H., Schleich, W. P.
Publikováno v:
Phys. Rev. Lett. 95, 110405 (2005)
We propose and experimentally demonstrate a method to prepare a nonspreading atomic wave packet. Our technique relies on a spatially modulated absorption constantly chiseling away from an initially broad de Broglie wave. The resulting contraction is
Externí odkaz:
http://arxiv.org/abs/quant-ph/0412138