Measurement of 0–25 eV Ions with a Retarding Potential Analyzer on the Cluster Ion Spectroscopy Experiment

  1. Robert F. Pfaff,
  2. Joseph.E Borovsky and
  3. David T. Young
  1. M. P. McCarthy1 and
  2. J. P. McFadden2

Published Online: 18 MAR 2013

DOI: 10.1029/GM102p0097

Measurement Techniques in Space Plasmas:Particles

Measurement Techniques in Space Plasmas:Particles

How to Cite

McCarthy, M. P. and McFadden, J. P. (1998) Measurement of 0–25 eV Ions with a Retarding Potential Analyzer on the Cluster Ion Spectroscopy Experiment, in Measurement Techniques in Space Plasmas:Particles (eds R. F. Pfaff, Joseph.E. Borovsky and D. T. Young), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM102p0097

Author Information

  1. 1

    Geophysics Program, University of Washington

  2. 2

    Space Science Laboratory, University of California, Berkeley

Publication History

  1. Published Online: 18 MAR 2013
  2. Published Print: 1 JAN 1998

ISBN Information

Print ISBN: 9780875900858

Online ISBN: 9781118664384

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Keywords:

  • Space plasmas—Measurement;
  • Plasma diagnostics

Summary

We describe a retarding potential analyzer (RPA) which extends the energy range of the Cluster ion spectroscopy (CIS) experiment down to 0–25 eV [Rème et al., 1993]. The CIS experiment will make comprehensive measurements of 3D ion distribution functions from 0–40 keV over the broad range of plasma regions the Cluster orbit will traverse. Mass composition, obtained using a time-of-flight technique, yields distribution functions for the different ion species. The incorporation of the RPA into an electrostatic analyzer (ESA) makes efficient use of spacecraft resources. We will describe the RPA optics design and implementation, and compare simulation work with the performance realized in the laboratory.