Retarding Field Analyzer

Beam Imaging Solutions is developing a new compact Retarding Field Energy Analyzer (RFEA) that will be available soon for purchase. The new Model RFEA-1 is of a collimated entrance aperture design with 3 grids. One grid will be for sweeping a retarding voltage and the other two grids for electron suppression before and after the sweeping grid.

Product Overview

Beam Imaging Solutions is developing a new compact Retarding Field Energy Analyzer (RFEA) that will be available soon for purchase. The new Model RFEA-1 is of a collimated entrance aperture design with 3 grids. One grid will be for sweeping a retarding voltage and the other two grids for electron suppression before and after the sweeping grid. The RFEA-1 will mount to a standard 2.75” conflat flange and will have similar outer dimensions like our model BOS-18 Beam Observation System. This new instrument can be used to measure the mean energy and energy spread of the incoming ion beam with beam energies up to 5keV.  A separate version, the model RFEA-2 will have the capability of measuring beam energies up to 10keV and will mount to a standard 4.5” conflat flange with outer dimensions similar to our BOS-25 Beam Observation System. Both units should be available sometime in 2022.

If you would like to be added to our email distribution list for updates when these products become available, please email Dr. Erik Wahlin at [email protected].

Preliminary Data

The data shown below was taken with the model G-2-D Ion gun with model 450 decelerator and RF-100 Ion Source. Data with the DCIS-100 filament source will be measured soon.

RFA Initial Data 1

The RFEA-1 can also be used to measure the mean ion energy plasma potential of the ion source. The plasma potential is just the difference between the measured mean ion beam energy and the acceleration voltage.

RFA Initial Data 2