Beam pulsing device for use in charged-particle microscopy

E.R. Kieft (Uitvinder), F.B. Kiewiet (Uitvinder), A. Lassise (Uitvinder), O.J. Luiten (Uitvinder), P.H.A. Mutsaers (Uitvinder), E.J.D. Vredenbregt (Uitvinder), A. Henstra (Uitvinder)

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A charged-particle microscope comprising: - A charged-particle source, for producing a beam of charged particles that propagates along a particle-optical axis; - A sample holder, for holding and positioning a sample; - A charged-particle lens system, for directing said beam onto a sample held on the sample holder; - A detector, for detecting radiation emanating from the sample as a result of its interaction with the beam; - A beam pulsing device, for causing the beam to repeatedly switch on and off so as to produce a pulsed beam, wherein the beam pulsing device comprises a unitary resonant cavity disposed about said particle-optical axis and having an entrance aperture and an exit aperture for the beam, which resonant cavity is embodied to simultaneously produce a first oscillatory deflection of the beam at a first frequency in a first direction and a second oscillatory deflection of the beam at a second, different frequency in a second, different direction. The resonant cavity may have an elongated (e.g. rectangular or elliptical) cross-section, with a long axis parallel to said first direction and a short axis parallel to said second direction.
Originele taal-2Engels
StatusGepubliceerd - 22 okt 2012

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US2014103225 (A1)

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