Abstract

We study how the orientation of the optic axis affects single-scattering properties for small, birefringent calcite particles simulated using DDSCAT 7.1.1. We consider two irregular model particles, a flake and a rhomboid, in either a (i) fixed or (ii) random orientation. Simulations are performed for three volume-equivalent radii of 0.1, 0.45, and 1.0 μm. For each target, we repeat the computations for three sets of orientations of the optic axis. When a fixed spatial orientation of the target is considered, the simulations are significantly affected by the orientation of the optic axis. However, the effect is considerably weaker when assuming the same targets in random spatial orientation.

© 2012 Optical Society of America

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  1. M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, Light by Non-Spherical Particles (Academic Press, 2000).
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    [CrossRef]
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    [CrossRef]

2011

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

2010

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

2009

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

2007

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

1999

G. Ghosh, Opt. Commun. 163, 95 (1999).
[CrossRef]

T. Claquin, M. Schultz, and Y. Balkanski, J. Geophys. Res. 104, 22243 (1999).
[CrossRef]

1998

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

1994

Bailey, J.

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

Balkanski, Y.

T. Claquin, M. Schultz, and Y. Balkanski, J. Geophys. Res. 104, 22243 (1999).
[CrossRef]

Blanco, A.

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

Claquin, T.

T. Claquin, M. Schultz, and Y. Balkanski, J. Geophys. Res. 104, 22243 (1999).
[CrossRef]

Dabrowska, D. D.

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

Davaus Gasparetto, T.

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

Draine, B. T.

Flatau, P. J.

Fonti, S.

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

Ghosh, G.

G. Ghosh, Opt. Commun. 163, 95 (1999).
[CrossRef]

Hirst, E.

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

Hough, J. H.

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

Hovenier, J. W.

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, Light by Non-Spherical Particles (Academic Press, 2000).

Kupiainen, K.

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Lehtinen, M.

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Lourenço, S.

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

Lucas, P. W.

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

Marchiori, E.

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

Marra, A. C.

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

Mauro Mano, C.

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

McKie, C.

D. McKie and C. McKie, Crystaline Solids (Thomas Nelson, 1974).

McKie, D.

D. McKie and C. McKie, Crystaline Solids (Thomas Nelson, 1974).

Mishchenko, M. I.

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, Light by Non-Spherical Particles (Academic Press, 2000).

Moreno, F.

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

Muinonen, K.

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Muñoz, O.

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

Nieminen, J. V.

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Nobre, L. F.

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

Nousiainen, T.

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Orofino, V.

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

Proce, R.

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

Rotundi, A.

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

Schultz, M.

T. Claquin, M. Schultz, and Y. Balkanski, J. Geophys. Res. 104, 22243 (1999).
[CrossRef]

Travis, L. D.

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, Light by Non-Spherical Particles (Academic Press, 2000).

Ulanowski, Z.

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

Videen, G.

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Zanetti, G.

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

Zubko, E.

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

Atmos. Chem. Phys.

Z. Ulanowski, J. Bailey, P. W. Lucas, J. H. Hough, and E. Hirst, Atmos. Chem. Phys. 7, 6161 (2007).
[CrossRef]

In Atti della Accademia Peloritana dei Pericolanti

D. D. Dabrowska, O. Muñoz, F. Moreno, T. Nousiainen, E. Zubko, and A. C. Marra, In Atti della Accademia Peloritana dei Pericolanti 89 Suppl. No. 1 (2011).

J. Geophys. Res.

T. Nousiainen, E. Zubko, J. V. Nieminen, K. Kupiainen, M. Lehtinen, K. Muinonen, and G. Videen, J. Geophys. Res. 114, D07207 (2009).
[CrossRef]

T. Claquin, M. Schultz, and Y. Balkanski, J. Geophys. Res. 104, 22243 (1999).
[CrossRef]

J. Opt. Soc. Am. A

Lung

E. Marchiori, S. Lourenço, T. Davaus Gasparetto, G. Zanetti, C. Mauro Mano, and L. F. Nobre, Lung 188, 165 (2010).
[CrossRef]

Opt. Commun.

G. Ghosh, Opt. Commun. 163, 95 (1999).
[CrossRef]

Planet. Space Sci.

V. Orofino, A. Blanco, S. Fonti, R. Proce, and A. Rotundi, Planet. Space Sci. 46, 1659 (1998).
[CrossRef]

Other

D. McKie and C. McKie, Crystaline Solids (Thomas Nelson, 1974).

B. T. Draine and P. J. Flatau, “User Guide for the Discrete Dipole Approximation Code DDSCAT 7.1,” http://arxiv.org/abs/1002.1505 (2010).

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, Light by Non-Spherical Particles (Academic Press, 2000).

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Figures (4)

Fig. 1.
Fig. 1.

Computer-generated particle shapes considered. An irregular flake (left; approx. 50.000 dipoles), and an irregular rhomboid (right; approx. 100.000 dipoles).

Fig. 2.
Fig. 2.

Computed scattering matrix elements as a function of the scattering angle ( Θ ) for an irregular 1 μm radius calcite flake in the fixed spatial orientation lf 1 (Table 1) and different DF orientations labeled as df 1 , df 2 , and df 3 (Table 2). The computations are performed at 647 nm. Different colors refer to different DF orientations.

Fig. 3.
Fig. 3.

Same as Fig. 2, but for an irregular 1 μm radius calcite rhomboid.

Fig. 4.
Fig. 4.

Computed orientation-averaged scattering matrix elements as functions of the scattering angle ( Θ ) for an irregular 1 μm radius calcite flake (solid lines) and rhomboid (dashed lines). 1485 spatial orientations have been used. The computations are performed at a wavelength of 647 nm. Different colors refer to different DF orientations (see Table 2).

Tables (2)

Tables Icon

Table 1. Spatial Orientation of the Particles with Respect to the LF— lf 1 , lf 2 , and lf 3 —Used in Our Computations

Tables Icon

Table 2. Orientations of the Optic axis in the DF— df 1 , df 2 , and df 3 —Used in Our Computations

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