FEI Quanta FEG 250, User'S Operation Manual

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System Options: Specimen Holder Kit Option
9-74
Analytical Holder (3)
The Analytical Holder is use in conjunction with an EDX system. 2
polished 1inch mounts can be slotted from below into the retaining
holes until they become flush to the top of the holder. Here they can
be locked in place by screws in the holder side wall. This gives the
specimens a common height with a Faraday cup position drilled into
the top of the holder and therefore can be common during x-ray
analysis.
There are also 2 positions for 12.5 mm stubs or for standards
necessary for the analysis. The 2 stubs are each held by a screw in
the side wall. The Analytical Holder fits to the Interface pillar by two
captive screws equally off-set from the centre.
All screws are either Torx or Hex-key ended.
POLISHED MOUNT HOLDERS
These comprise of 2 shallow cup holders of different diameters. The
sizes are 25 mm and 32 mm. These are the general size of
encapsulated mounts either for Metallurgy or Geology. The holders
have a split in the side of the cup so as to grip the mount when it is
pushed in. They have a simple pin the same as the 12.5 mm stubs,
therefore can be mounted on any of the same fittings as the standard
stub.
FIGURE 9-63 POLISHED MOUNT HOLDERS / CLAMP STUBS
CLAMP STUBS
These are generally used for holding thin objects such as a piece of
IC wafer. Also can be used when adhesive is prohibited. They have
Hex-key screws that clamp with Nylon bushes onto the object.
Grounding of the specimen may need to be made by another method
other than just touch contact.
TORX DRIVERS
Within the kit are two Torx drivers to complete the fitting of the
interfacing parts. All screws for interfacing connections are Torx. All
screws for clamping sample stubs are the Hex-key type (the
appropriate Hex-key tool is a standard facility).