BielefeldGED:Equipment

This page contains description of equipment used by GED group in Bielefeld.

Instrument

The reconstructed Balzers Eldigraph KD-G2 (one of only two still existing ones worldwide) is presently in use in the laboratory. The most recent paper <bib id="BergerZFN2009" /> about this improved gas electron diffractometer contains lots of details.

Current state

History

GED instrument in April 2006 (Uni-Münster)	The apparatus with new gun, power supply and recording system (image plates), Jun 2007	November 2007, the apparatus is already in Uni-Bielefeld
September 2009, more control devices	May 2011, heavily improved control panel	The instrument in 2012

Pumps

Backing Pumps

Backing (fore-vacuum) pumps: Edwards x05 Scrollpump Oilfree and Edwards E2M80 oil pump.

Diffusion Pumps

New diffusion pump (Edwards Diffstak 250/2000P), installed in December, 2013:

Old diffusion pump:

Turbo Pumps

Turbo pump (Edwards EXT70H) attached to the electron gun:

Sector

A sin²-type sector (common formula is A*sin²(r/B)) is used.

Inlet Systems

Room-temperature Nozzle

Inlet device for room temperatures (used by Heinz Oberhammer).

Nozzle tip.

References

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