Reverse View LEED/Auger - LK Technologies - #1

The LK Technologies Model RVL2000 Reverse View LEED System consists of 4-grid LEED optics, phosphor viewing screen and low-profile electron gun. The optics feature precision alignment with tungsten grids of high transmission (83% per grid) and a viewing angle of 103°. The 1.59 cm diameter electron gun and gun support are designed to minimize interference with LEED observations. Nevertheless, the gun delivers up to 2 uA beam current at 100 eV and up to 50 uA for Auger operation.

The optics may be selected in either fixed or retractable geometry. Fixed optics are available on 8.0 in. or 6.0 in. O.D. CF flanges at standard flange to sample distances of 8.0 or 10.0 in. Retractable optics are available on the 8.0 in. CF flange in two standard versions: a 10 in. sample-to-flange working distance with 2.0 in. travel and an 8.0 in. sample-to-flange working distance with 1.8 in. travel. The optics are translated by a single lead screw on three precision linear bearings internal to the vacuum. The lead screw is in turn driven by a UHV rotary feedthru mounted perpendicular to the optic axis to allow unobstructed viewing of the LEED pattern.

irformance features

Precision construction with 4-grid tungsten optics

Miniature 1.59 cm diameter electron gun

103° usable viewing angle

0.5% energy resolution

Available with retractable optics

Mounting flange has integral viewport and electrical feedthroughs

Fully HUV compatible and bakeable

Low noise, high performance Auger electronics with integral lock-in amplifier

TECHNOLOGIES

Manufacturer of precision instrumentation for surface analysis including electron spectrometers, ion and electron guns, and LEED/Auger systems.