Replaceable apertures for the Wehnelt cylinder can be supplied to fit some microscopes.
A hole size smaller than normal gives improved characteristics for most electron guns.
Used in Philips/FEI, Leitz and Amray. Aperture diameter 10mm.
| Art. | Description | Unit | Price | Quantity | |
|---|---|---|---|---|---|
| A0111T | Tantalum Aperture for Wehnelt – 200µm Hole | Each | € 83,50 | ||
| A0113T | Tantalum Aperture for Wehnelt – 300µm Hole | Each | € 133,10 | ||
| A0115T | Tantalum Aperture for Wehnelt – 500µm Hole | Each | € 203,60 | ||
| A0117T | Tantalum Aperture for Wehnelt – 750µm Hole | Each | € 177,90 |