Abstract
The ‘Imager for Magnetosphere-to-Aurora Global Exploration’ (IMAGE) will be launched early in the year 2000. It will be the first mission dedicated to imaging, with the capability to determine how the magnetosphere changes globally in response to solar storm effects in the solar wind, on time scales as short as a few minutes. The low energy neutral atom (LENA) imager uses a new atom-to-negative ion surface conversion technology to image the neutral atom flux and measure its composition (H and O) and energy distribution (10 to 750 eV). LENA uses electrostatic optics techniques for energy (per charge) discrimination and carbon foil time-of-flight techniques for mass discrimination. It has a 90° x 8° field-of-view in 12 pixels, each nominally 8° x 8°. Spacecraft spin provides a total field-of-view of 90° x 360°, comprised of 12 x 45 pixels. LENA is designed to image fast neutral atom fluxes in its energy range, emitted by auroral ionospheres or the sun, or penetrating from the interstellar medium. It will thereby determine how superthermal plasma heating is distributed in space, how and why it varies on short time scales, and how this heating is driven by solar activity as reflected in solar wind conditions.
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References
Aellig, M. R., et al.: 1998, ‘Surface Ionization with Cesiated Converters for Space Applications’, Geophysical Monograph 103, Am. Geophys. Un., Washington, DC., p. 289.
Collin, H. L., Peterson, W. K., Lennartsson, O. W. and Drake, J. F.: 1998, ‘The Seasonal Variation of Auroral Ion Beams’, Geophys. Res. Lett. 25(21), 4071.
Dahl, D.: 1995, SIMION 3D 6.0, pub. # INEL-95/0403, Idaho National Engineering Laboratory, Chemical Materials and Process Department, Lockheed Idaho Technoloes Co., Idaho Falls, ID.
Delcourt, D. C., et al.: 1988, ‘Influence of the Interplanetary Magnetic Field Orientation on Polar Cap Ion Trajectories: Energy Gain and Drift Effects’, J. Geophys. Res. 93, 7565.
Fasola, J.: 1977, ‘H-Source Development at ANL’, IEEE Trans. Nucl. Sci. NS-24, 1597.
Ghielmetti, A. G., Shelley, E. G., Fuselier, S., Wurz, P., Bochsler, P., Herrero, F., Smith, M. F. and Stephen, T.S.: 1994, ‘Mass Spectrograph for Imaging Low-Energy Atoms’, Opt. Eng. 33, 362.
Giles, B. L., et al.: 1994, ‘Statistical Survey of Pitch Angle Distributions in Core (0-50 eV) Ions from Dynamics Explorer 1: Outflow in the Auroral Zone, Polar Cap, and Cusp’, J. Geophys. Res. 99, 17483.
Gloeckler, G. and Hsieh, K. C.: 1979, ‘Time-Of-Flight Technique for Particle Identification at Energies from 2-400 keV/Nucleon’, Nucl Instr. Meth. 165, 537.
Gruntman, M.: 1992, ‘A New Technique for in situ Measurement of the Composition of Neutral Gas in Interplanetary Space’. Planetary Space Sci. 41(4), 307.
Gruntman, M.: ‘Energetic Neutral Atom Imaging of Space Plasmas’, Rev. Sci. Instrum. 68(10), 3617.
Hardy, D. A., et al: 1987, ‘Statistical and Functional Representation of the Pattern of Auroral Energy Flux, Number Flux, and Conductivity’, J. Geophys. Res. 92, 12275.
Herrero, F. A. and Smith, N. F.: 1992, ‘Imager of Low Energy Neutral Atoms (ILENA): Imaging Neutral Atoms from the Magnetosphere at Energies Below 20 keV, Instrumentation for Magnetospheric Imagery, SPIE pub. # 1,744, pp. 32–39.
Moore, T. E. and Delcourt, D. C.: 1995, ‘The Geopause’, Rev. Geophys. 33(2), 175.
Moore, T. E., et al.: 1999, ‘Ionospheric Mass Ejection Response to a CME’, Geophys. Res. Lett. 26(15), 1.
Pargellis, A. and Scidl, M.: 1982, ‘Formation of H-Ions by Backscattering Thermal Hydrogen Atoms from a Cesium Surface’, Phys. Rev. B 25(7), 4356.
Probst, F. M. and Luescher, E.: 1963, ‘Auger Electron Ejection from Tungsten Surfaces by Low Energy Ions’, Phys. Rev. 132, 1037.
Pollock, C. J., et al: 1990, ‘A Survey of Upwelling Ion Event Characteristics’, J. Geophys. Res. 95, 18969.
Reijnen, P. H. F., van Slooten, U. and Kleyn, A. W.: 1991, ‘Negative Ion Formation and Dissociatio in Scattering of Fast 02 and NO from Ag(l 11), and Pt(l 11)’, J. Chem. Phys. 94(1), 695.
Roelof, E. C.: 1987, ‘Energetic Neutral Atom Image of a Storm-Time Ring Current’, Geophys. Res. Lett. 14, 652.
Schneider, P. J., Eckstein, W. and Verbeek, H.: 1982, ‘Charge States of Reflected Particles for Grazing Incidence on D+, D2+, and Do on Ni and Cs Targets’, Nucl. Instrum. Meth. 194, 387.
Smith, M. F., et al.: 1998, ‘Imaging Low-Energy (keV) Neutral Atoms: Ion-Optical Design’, Geophysical Monograph #103, Am. Geophys. Un; Washington DC., p. 263.
Snowdon, K. J., Willerding, B. and Heiland, W.: 1986, ‘Molecule Excitation in Sputtering, Scattering, and Electron or Photon Induced Desorption’, Nucl. Instrum. Meth. B 14, 467.
Stephen, T. M., Van Zyl, B. and Amme, R. C.: 1996, ‘Generation of a Fast-Oxygen Beam from O-Ions by Resonant Cavity Radiation’, Rev. Sci. Instrum. 67(4), 1478.
Taglauer, E.: 1985, ‘Investigation of the Local Atomic Arrangement on Surfaces Using Low-Energy Ion Scattering’, Appl. Phys. A 38, 161.
Van Toledo, W.: 1986, ‘Formation of Negative Hydrogen Ions on a Cesiated Tungsten Surface and its Application to Plasma Physics’, Proc. of Production and Application of Light Negative Ions, Laboratoire de Physique des Milieuex Ionises, École Polytechnique, Palaiseau, France, p. 193.
Van Slooten, U., Andersson, D. R. and Kleyn, A. W.: 1992, ‘Scattering of Fast Molecular Hydrogen from Ag(111)’, Surf. Sci. 274, 1.
Volland, H.: 1978, ‘A Model of the Magnetospheric Electric Convection Field’, J. Geophys. Res. 83, 2695.
Walton, D. M., James, A. M., Bowles, J. A.: 1998, ‘High Speed 2-D Imaging for Plasma Analyzers Using Wedge-and-Strip Anodes’, Measurement Techniques Space Plasmas: Particles’, Geophysical Monograph #102, AGU, Washington, DC., p. 295.
Wurz, P., Bochsler, P., Ghielmetti, A. G., Shelley, E. G., Herrero, F. and Smith, M. F.: 1993, ‘Concept for the HI-LITE Neutral Atom Imaging Instrument’, in P. Varga and G. Betz (eds), Proceedings of Symposium on Surface Science, Kaprun, Austria, p. 225.
Wurz, P., Aellig, M. R., Bochsler, P., Ghielmetti, A. G., Shelley, E. G., Fuselier, S. A., Herrero, F., Smith, M. F., Stephen, T. S.: 1995, ‘Neutral Atom Mass Spectrograph’, Opt. Eng. 34, 2365.
Wurz, P., Frohlich, T., Brüning, K., Scheer, J., Heilourd, W., Hertzberg, E., Fuselier, S. A.: 1998, ‘Formation of Negative Ions by Scattering from a Diamond (111) Surface’, in J. Safrankova, and A. Koruka (eds), Proc. of the week of doctoral students, Charles University, Prague, Czech Republic, p. 257.
Yau, A. W., et al.: 1988, ‘Quantitative Parametrization of Energetic Ionospheric Ion Outflow’, in Modeling Magnetospheric Plasma’, T. E. Moore and J. H. Waite, Jr. (eds), Geophys. Mono. #44, AGU, Washington, DC., p. 211.
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Moore, T.E. et al. (2000). The Low-Energy Neutral Atom Imager for Image. In: Burch, J.L. (eds) The Image Mission. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4233-5_6
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DOI: https://doi.org/10.1007/978-94-011-4233-5_6
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