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Wien filter
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| product name: | Wien filter |
| product category: | ion optic components |
| catalog no.: | 21007 |
| datasheet: |  download |
Principle of Operation:
The Wien filter is a charged particle separator with a crossed electric and magnetic field configuration (E x B) based on velocity separation. The ion species of interest with a specific velocity passes the Wien filter straightforward by properly adjusted electric and magnetic fields. All other species are suppressed. The Wien filter is characterized by a high dispersion at small overall dimensions.
Specifications:
The Wien filter has a mass and charge state resolution* of:
>40 (1.0mm aperture)
>80 (0.5mm aperture)
at typical ion source parameter (5kV).
 * A mass and charge state resolution of 40 means the separation of monoisotopic xenon up to the charge state 40. Hence a monoisotopic xenon beam consisting of a mixture of charge states (e.g. Xe10+ up to Xe40+) can be separated into the specific partial beams. The same applies for isotopes with different masses. A smaller aperture at the entrance and exit of the filter results in a higher resolution with the acceptance of lower beam transmission (transmission coefficient <<1) and therefore a higher loss of beam intensity. Hence the aperture size should be always a trade-off between necessary resolution and maximum beam transmission.
Neither mass/charge state resolution nor transmission are constant over the mass, charge state and energy range.
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Scope of Delivery:
Wien filter (DN100CF)
Iron yoke with installed magnets
Power supply (2-channel, 1kV, display 4 digit, analog I/O 5V)
2 x 5m HV-cable with SHV plugs
It is designed to retrofit DREEBITs ion sources but can also be used for other purposes.
the scope of delivery includes:
wien filter psu |
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