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A Wien filter also known as a velocity selector is a device consisting of perpendicular electric and magnetic fields that can be used as a velocity filter for charged particles, for example in electron microscopes and spectrometers.
Jul 21, 2011 · The Wien filter (WF) was first touched upon in 1897 [1], 30 years before Busch [2] demonstrated that the axially symmetric field generated by a coil acts on electrons like a convergent lens in light optics.
- E. Plies, K. Marianowski, T. Ohnweiler
- 2011
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Jul 1, 2011 · The Wien filter or ExB velocity filter is probably the first charged particle analyzer and focusing device ever used. Invented by Wien, it appeared later also as ExB velocity filter,...
Apr 4, 2020 · The Wiener filter is a form of statistical signal processing. The design of the Wiener filter takes a different approach from typical deterministic filters designed for a desired frequency response. Here it is assumed that knowledge of the original signal and noise are known.
- Woon Siong Gan
- wsgan5@gmail.com
- 2020
Jan 1, 2013 · The Wien filter was invented by Wilhelm Wien (1864–1928), who used it in 1898 (Wien 1898) to measure the charge-to-mass (e/m) ratio of a cathode ray (electrons). A schematic drawing of the Wien filter used by Wilhelm Wien is shown in Becker (2007).
Jul 21, 2011 · A Wien velocity filter employs a combination of crossed magnetic and electrostatic fields in order to select the desired velocity of ions. Several microscopes and spectrometers are used as filters to… Expand. A new monochromator with multiple offset cylindrical lenses 2: Aberration analysis and its applications. Takashi Ogawa B. Cho.
