Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Vredenbregt, E."'
Scanning ion microscopy applications of novel focused ion beam (FIB) systems based on ultracold rubidium (Rb) and cesium (Cs) atoms were investigated via ion-induced electron and ion yields. Results measured on the Rb$^+$ and Cs$^+$ FIB systems were
Externí odkaz:
http://arxiv.org/abs/2403.05460
Cold atom ion sources have been developed and commercialized as alternative sources for focused ion beams (FIB). So far, applications and related research have not been widely reported. In this paper, a prototype rubidium FIB is used to study the irr
Externí odkaz:
http://arxiv.org/abs/2303.09315
Autor:
Skannrup, R. V., van Weerden, T., van der Werf, Y., Johri, T., Vredenbregt, E. J. D., Kokkelmans, S. J. J. M. F.
We have investigated formation of structures of Rydberg atoms excited from a disordered gas of ultracold atoms, using rate equations for two-photon Rydberg excitation in a single atom without eliminating the intermediate state. We have explored the v
Externí odkaz:
http://arxiv.org/abs/2001.05579
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. The ions are created from a laser-cooled and compressed atomic beam
Externí odkaz:
http://arxiv.org/abs/1710.11477
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 035007 (6pp)
Ultrashort and ultracold electron bunches created by near-threshold femtosecond photoionization of a laser-cooled gas hold great promise for single-shot ultrafast diffraction experiments. In previous publications the transverse beam quality and the b
Externí odkaz:
http://arxiv.org/abs/1709.07673
Publikováno v:
Phys. Rev. A 96, 053412 (2017)
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 partly selected with an aperture after which the transmitted atoms are
Externí odkaz:
http://arxiv.org/abs/1708.01933
Publikováno v:
Struct. Dyn. 4, 044010 (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 TM$_{110}$ mode.
Externí odkaz:
http://arxiv.org/abs/1701.07686
Autor:
Haaf, G. ten, de Raadt, T. C. H., Offermans, G. P., van Rens, J. F. M., Mutsaers, P. H. A., Vredenbregt, E. J. D., Wouters, S. H. W.
Publikováno v:
Phys. Rev. Applied 7, 054013 (2017)
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 fluorescence. The longitudinal velocity distribution, the transverse tempe
Externí odkaz:
http://arxiv.org/abs/1612.01883
Autor:
Haaf, G. ten, Wouters, S. H. W., van der Geer, S. B., Vredenbregt, E. J. D., Mutsaers, P. H. A.
Publikováno v:
J. Appl. Phys. 116, 244301 (2014)
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 performance predictions of a new type of focused ion beam based on photo-
Externí odkaz:
http://arxiv.org/abs/1410.4362
Autor:
Wouters, S. H. W., Haaf, G. ten, Notermans, R. P. M. J. W., Debernardi, N., Mutsaers, P. H. A., Luiten, O. J., Vredenbregt, E. J. D.
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) instruments. Here we show using calculations and Doppler cooling simulation
Externí odkaz:
http://arxiv.org/abs/1410.4350