Space experiments with particle accelerators: SEPAC

J. L. Burch, W. T. Roberts, W. W.L. Taylor, N. Kawashima, J. A. Marshall, S. L. Moses, T. Neubert, S. B. Mende, E. Y. Choueiri

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The Space Experiments with Particle Accelarators (SEPAC), which flew on the ATLAS 1 mission, used new techniques to study natural phenomena in the Earth's upper atmosphere, ionosphere and magnetosphere by introducing energetic perturbations into the system from a high power electron beam with known characteristics. Properties of auroras were studied by directing the electron beam into the upper atmosphere while making measurements of optical emissions. Studies were also performed of the critical ionization velocity phenomenon.

Original languageEnglish (US)
Pages (from-to)263-270
Number of pages8
JournalAdvances in Space Research
Issue number9
StatePublished - Sep 1994

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • General Earth and Planetary Sciences


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