Abstract
The dynamics of the lunar ionosphere and resulting flux of lunar ions to the lunar surface are reviewed. In the Lunar rest frame, ions formed from the neutral lunar atmosphere are accelerated by the interplanetary electric and magnetic fields. The trajectories of heavier ions are primarily along the electric field; the ion flux is in a direction perpendicular to the solar wind flow, correlated to the orientation of the interplanetary magnetic field, and impacts the surface with energies of tens of electron volts to a few keV. Thus we predict a relatively energetic (compared to thermal energies), highly directional, lunar ion flux but with the possibility that light ions such as hydrogen can execute orbits that return them to portions of the lunar surface not directly exposed to the solar wind. The effects of surface electric and magnetic fields are discussed, as is the ion energy spectrum. We calculate the trapping of atmospheric ions which impact the surface and from this the density of neutral Ar40 in the lunar atmosphere. We show that using the acceleration model, the lunar atmosphere total neutral number density can be calculated from ion detector data.
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References
Bernstein, W., Fredricks, R. W., Vogl, J. L., and Fowler, W. A.: 1963, Icarus 2, 233.
Bühler, F., Geiss, J., Meister, J., Eberhardt, P., Huneke, J. C., and Signer, P.: 1966, Earth Planetary Sci. Letters 1, 249.
Burlaga, L. F. and Ness, N. F.: 1968, Can. J. Phys. 46, S962.
Colburn, D. S., Mihalov, J. D., and Sonett, C. P.: 1971, J. Geophys. Res. 76, 2940.
Dyal, P. and Parkin, C. W.: 1971, J. Geophys. Res. 76, 5947.
Freeman, J. W., Hills, H. K., and Fenner, M. A.: 1971, Proc. 2nd Lunar Sci., Conf., Geochim, Cosmochim. Acta, Suppl. 2 3, 2093.
Freeman, J. W., Fenner, M. A., Hills, H. K., Lindeman, R. A., Medrano, R., and Meister, J.: 1972, Icarus 16, 328.
Geiss, J., Eberhardt, P., Bühler, F., and Meister, J.: 1970a, J. Geophys. Res. 75, 5972.
Geiss, J., Eberhardt, P., Signer, P., Biihler, F., and Meister, J.: 1970b, in Apollo 12 Preliminary Science Report,NASA Sp-235, 99.
Heymann, D., Yaniv, A., Adams, J. A. S., and Fryer, G. E.: 1970, Science 167, 555.
Heymann, D. and Yaniv, A.: 1970, Proc. 2nd Lunar Sci. Conf., Geochim. Cosmochim. Acta, Suppl. 12, 1261.
Hinton, F. L. and Taeusch, D. R.: 1964, J. Geophys. Res. 69, 1341.
Johnson, F. S.: 1971, Rev. Geophys. Space Phys. 9, 813.
Johnson, F. S., Evans, D. E., and Carroll, J.: 1972a, ‘Lunar Atmosphere’, presented at 3rd Lunar Sci. Conf., Houston.
Johnson, F. S., Evans, D. E., and Carroll, J.: 1972b, in C. Watkins (ed.), Lunar Science III, Lunar Sci. Inst. Contrib. No. 88, p. 436.
Manka, R. H.: 1972, Ph. D. Thesis, Rice University, Houston, Texas, 1972.
Manka, R. H. and Michel, F. C.: 1970a, Trans. Am. Geophys. Union 51, 408.
Manka, R. H. and Michel, F. C.: 1970b, Trans. Am. Geophys. Union 51, 344.
Manka, R. H. and Michel, F. C.: 1970c, Science 169, 278.
Manka, R. H. and Michel, F. C.: 1971, Proc. 2nd Lunar Sci. Conf., Geochim. Cosmochim. Acta Suppl. 2 2, 1717.
Manka, R. H., Michel, F. C., Freeman, J. W., Jr., Dyal, P., Parkin, C. W., Colburn, D. S., and Sonett, C. P.: 1972a, in C. Watkins (ed.), Lunar Science III, Lunar Sci. Inst. Contrib. No. 88, p. 504.
Manka, R. H., Michel, F. C., Freeman, J. W., and Hills, H. K.: 1972b, Trans. Am. Geophys. Union 53, 439.
Meister, J.: 1969, Ph. D. Thesis, University of Berne.
Michel, F. C.: 1964, Planetary Space Sci. 12, 1075.
Snyder, C. W., Clay, D. R., and Neugebauer, M.: 1971, ‘An Impact Generated Plasma Cloud on the Moon’, presented at 2nd Lunar Sci. Conf., Houston, Texas.
Yeh, T. T. J. and Chang, G. K.: 1972, J. Geophys. Res. 77, 1720.
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© 1973 D. Reidel Publishing Company, Dordrecht, Holland
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Manka, R.H., Michel, F.C. (1973). Lunar Ion Flux and Energy. In: Grard, R.J.L. (eds) Photon and Particle Interactions with Surfaces in Space. Astrophysics and Space Science Library, vol 37. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2647-5_28
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DOI: https://doi.org/10.1007/978-94-010-2647-5_28
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