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Modelling Laboratory Data of Bidirectional Reflectance of a Regolith Surface Containing Alumina

Published online by Cambridge University Press:  02 January 2013

C. Bhattacharjee ,
D. Deb ,
H. S. Das ,
A. K. Sen  and
R. Gupta
C. Bhattacharjee*
Affiliation:
Department of Physics, Assam University, Silchar 788011, India Department of Physics, Kokrajhar Government College, Kokrajhar 783370, India
D. Deb
Affiliation:
Department of Physics, Assam University, Silchar 788011, India
H. S. Das
Affiliation:
Department of Physics, Assam University, Silchar 788011, India
A. K. Sen
Affiliation:
Department of Physics, Assam University, Silchar 788011, India
R. Gupta
Affiliation:
The Inter-University Centre for Astronomy and Astrophysics, Pune University Campus, Pune 411007, India
*
DCorresponding author. Email: [email protected]
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Abstract

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Bidirectional reflectance of a surface is defined as the ratio of the scattered radiation at the detector to the incident irradiance as a function of geometry. Accurate knowledge of the bidirectional reflection function for layers composed of discrete, randomly positioned scattering particles is essential for many remote sensing, engineering, and biophysical applications, as well as for different areas of astrophysics. Computations of bidirectional reflection functions for plane parallel particulate layers are usually reduced to solving the radiative transfer equation by the existing techniques. In this work we present our laboratory data on bidirectional reflectance versus phase angle for two sample sizes of alumina, 0.3 and 1 μm, for the He–Ne laser at wavelengths of 632.8 nm (red) and 543.5 nm (green). The nature of the phase curves of the asteroids depends on the parameters like particle size, composition, porosity, roughness, etc. In the present study we analyze data which are being generated using a single scattering phase function, that is, Mie theory of treating particles as a compact sphere. The well-known Hapke formula, along with different particle phase functions such as Mie and Henyey–Greenstein, will be used to model the laboratory data obtained at the asteroid laboratory of Assam University.

Keywords

comets: generaldust: extinctionscatteringpolarization
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 28 , Issue 3 , 2011 , pp. 261 - 265
Copyright
Copyright © Astronomical Society of Australia 2011

References

Chandrasekhar, S., 1960, Radiative Transfer (New York: Dover)Google Scholar
Deb, D., Sen, A. K., Das, H. S. & Gupta, R., 2011, Adv Space ResGoogle Scholar
Gervais, F., 1991, Handbook of Optical Constants of Solid 11 (Academic Press)Google Scholar
Hapke, B., 1981, JGR, 86, B4, 3039CrossRefGoogle Scholar
Hapke, B., 2002, Icarus, 157, 523CrossRefGoogle Scholar
Hapke, B., 2005, Theory of Reflectance and Emittance Spectroscopy (Cambridge, MA: Cambridge University Press)Google Scholar
Hapke, B., Shepard, M. K., Nelson, R. M., Smythe, W. D. & Piatek, J. L., 2009, Icarus, 199, 210CrossRefGoogle Scholar
Henyey, C. & Greenstein, J., 1941, ApJ, 93, 70CrossRefGoogle Scholar
Kamei, A., Kogachi, M., Mukai, T. & Nakamura, A. M., 1999, Adv Space Res, 23, 1205CrossRefGoogle Scholar
Kaasalainen, S., 2003, A&A, 409, 765Google Scholar
Lumme, K. & Bowell, E., 1981, ApJ, 86, 11Google Scholar
Mishchenko, M. I., 1994, J Quant Spectrosc Radiat Transfer, 52, 95CrossRefGoogle Scholar
Mishchenko, M. I. & Macke, A., 1997, J Quant Spectrosc Radiat Transfer, 57, 767CrossRefGoogle Scholar
Mishchenko, M. I., Dlugach, J. M., Yanovitskij, E. G. & Zakharova, N. T., 1999, J Quant Spectrosc Radiat Transfer, 63, 409CrossRefGoogle Scholar
Nelson, R. M., Smythe, W. D. & Spiker, L. J., 2000, Icarus, 147, 545CrossRefGoogle Scholar
Piatek, J. L., Hapke, B. W., Nelson, R. M., Smythe, W. D. & Hale, A. S., 2004, Icarus, 171, 531CrossRefGoogle Scholar
Pollack, J. & Cuzzi, J. J., 1980, Atmos Sci, 37, 8682.0.CO;2>CrossRefGoogle Scholar
Shepard, M. K. & Helfenstein, P., 2007, JGR, 112, 17CrossRefGoogle Scholar
Shkuratov, Y., Ovcharenko, A. & Zubco, E., 2002, Icarus, 159, 396CrossRefGoogle Scholar
van de Hulst, H. C., 1957, Light Scattering by Small Particles (New York: Wiley)CrossRefGoogle Scholar