Advertisement

Onboard Radiometric Photography of Excede Spectral’s Ejected-Electron Beam

  • I. L. Kofsky
  • R. B. Sluder
  • D. P. Villanucci
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 79)

Abstract

A radiometrically-calibrated wide angle camera system was installed on EXCEDE SPECTRAL (O’Neil et al., 1981) to determine spatial distributions of energy deposition within and near the fields of view of its UV-visible-IR-sensitive instruments. High signal/noise, on-scale photographic images were obtained over the full range of electron injection altitudes. We describe here the cameras and film data reduction procedure, and present measured column emission rate distributions within a few 10’s m from the rocket between 123 and 85 km. These are found to differ considerably from predictions of an independent particle transport model.

Keywords

Automatic Gain Control Suprathermal Electron Radiance Distribution Volume Emission Rate Inject Electron Beam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Archer, D.H., 1980, “EXCEDE Energy Deposition: Theory and Experiment Compared”, Final report on U.S. DNA contract 001–79-C-0016, Mission Research Corporation, Santa Barbara, California.Google Scholar
  2. Arnoldy, R.L., and Winckler, J.R., 1981, The hot plasma environment and floating potentials of an electron beam-emitting rocket in the ionosphere, J. Geophys. Res., 86:575.ADSCrossRefGoogle Scholar
  3. Bernstein, W., Leinbach, H., Kellogg, P.J., Monson, S.J., and Hallinan, T., 1979, Further laboratory measurements of the beam-plasma discharge, J. Geophys. Res., 84:7271.ADSCrossRefGoogle Scholar
  4. Golomb, D., and MacLeod, M.A., 1966, Diffusion coefficients in the upper atmosphere from chemiluminous trails, J. Geophys. Res., 71:2299.ADSGoogle Scholar
  5. Jones, A.V., 1971, Auroral spectroscopy, Space Sci. Rev’s. 11:776.ADSGoogle Scholar
  6. Kofsky, I.L., 1967a, Reduction of pictorial data by microdensitometry, in.: “Aerospace Measurement Techniques”, G.G. Mannella, ed., NASA SP-132, Washington, D.C.Google Scholar
  7. Kofsky, I.L., 1967b, Clarification of airglow processes by nuclear excitation, in: “Aurora and Airglow”, B.M. McCormac, ed., Reinhold, New York.Google Scholar
  8. Linson, L.M., and Papadopoulos, K., 1980, “Review of the Status of Theory and Experiment for Injection of Energetic Electron Beams in Space”, LAPS 65, Science Applications, Inc., LaJolla, California.Google Scholar
  9. Miller, C.S., Parsons, F.G., and Kofsky, I.L., 1964, Simplified two-dimensional microdensitometry, Nature, 202:1196.ADSCrossRefGoogle Scholar
  10. O’Neil, R.R., Stair, A.T. Jr., Pendleton, W.R. Jr., and Burt, D., 1981, The EXCEDE SPECTRAL artificial auroral experiment: an overview, these Proceedings.Google Scholar
  11. Winckler, J.R., 1980, The application of artificial electrons to magnetospheric research, Rev’s. Geophys. Space Phys., 18:659.ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • I. L. Kofsky
    • 1
  • R. B. Sluder
    • 1
  • D. P. Villanucci
    • 1
  1. 1.PhotoMetrics, Inc.WoburnUSA

Personalised recommendations