The new model 900 deflects the incoming positive or negatively charged ion beam at 90 degrees in a two-dimensional electrostatic quadrupole field. The quadrupole field is set up using a combination circular electrode and shim electrodes to produce hyperbolic equipotentials. A set of entrance and exit einzel lens assemblies correct any 2-dimensional focusing of the ion beam through the quadrupole. Some possible applications for the model 900 include:

Merged ion-laser beam experiments

Merged ion-neutral beam experiments

Multiple beam line switching

Separation of ions from molecular/atomic/neutral beam particles

Separation of ions from photons

Cluster deposition and ion spectroscopy

Deflection of ions at either 90, 180 or 270 degrees

Energy Filter

The picture above left shows a 1 keV H₂O⁺ (left) and N₂⁺ ion beam profiles before they are deflected, and after being deflected 90-degrees (right) using the new model 900-H. The viewing area is 19mm diameter. A Colutron model G-2 Ion Gun System with model E-2 controller were used to generate the ion beams. The images were recorded using the Colutron model BVS-1 beam viewing system, with model BVS-1-OPT02-2122 CCD camera, and model IPS-3 image processing system.

 Model 900-H Specifications

Maximum Bakeout Temperature: 350° C

Center Circular Electrodes: Two power supplies, 0 to + 10kV and 0 to - 10kV

Corner Field Shaping Electrodes: Two power supplies, 0 to + 8kV, and 0 to - 8 kV

Entrance and Exit Cylindrical Einzel Lens: 0 to 5kV

 

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