Retarding Potential Analyzer for Plasma Applications AARC RPA-1

   

Overview

A Retarding Potential Analyzer (RPA) is an advanced plasma diagnostic used to measure the source plasma ion energy distribution. It involves a multi-gridded system to shield out electrons and allows the user to select discriminating ranges of ion energies. The design allows for a wide range of custom plasma properties and intermittent elevated temperature.

Applications

  • Plasma processing
  • Fusion research
  • Electric propulsion research
  • University level plasma research
  • Spacecraft atmospheric research

Additional Requirements/Options

The very low currents measured require the additional use of Ad Astra's TZAP-111 pre-amplifier. Custom mounting options are available. Analysis software is available separately.

Price

Call for a quote.

Download RPA-1 spec sheet

Specifications

   
Dimensions 35 mm x 103 mm (1.38” x 4.06”)
Ion energy (Ei) 10 – 1000 eV
Ei Error ± 5 eV
Minimum Detectable Current 10 nA
Materials: Housing/Grids: 316 Stainless Steel
Collector: Molybdenum
Spacers/Various: Alumina
Entrance Attenuator: Pyrolitic Graphite
Maximum Temperature 300 °C Persistent
1100 °C Intermittent
Plasma density 1017 – 1019 m-3 nominal. Customizable.
Connectors: (1) LEMO FFA.00.250.CTAC29
(2) LEMO FFA.0S.302.CLAC32
Mounting Feedthrough 2.75” CF Flange nominal. Customizable.

Screenshot of RPA Analysis Graphical User Interface