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Absorption effect on light scattering by dust particles in physical optics approximation.

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Title: Absorption effect on light scattering by dust particles in physical optics approximation.
Authors: Salnikov, K. S.1 (AUTHOR) 1015k@mail.ru, Kustova, N. V.1 (AUTHOR) kustova@iao.ru, Timofeev, D. N.1 (AUTHOR) tdn@iao.ru, Tkachev, I. V.1 (AUTHOR) tiv@iao.ru, Konoshonkin, A. V.1,2 (AUTHOR) a.kon@iao.ru
Source: Russian Physics Journal. Jul2025, Vol. 68 Issue 7, p972-977. 6p.
Subjects: Light scattering, Physical optics, Graphite, Silica, Aerosol analysis, Optical reflection, Dust, Backscattering
Abstract: The paper investigates the scattering properties of cosmic dust particles using physical optics approximation, focusing on the identification of conditions under which the backscattered signal can be approximated by the specular component only. The analysis is given to the light scattering by irregular dust particles ranging in size from 5 to 100 μm, including pyroxene glass (n = 1.6847 + i0.0373) and graphite (n = 1.48 + i0.003). Geometrical parameters of the particles are measured for a statistically representative selection. It is found that for weakly absorbing materials like graphite, the backscattered signal becomes purely specular at the particle size exceeding 100 μm, whereas for strongly absorbing particles such as pyroxene glass, this occurs at 5 μm particles. Research findings are relevant for modeling stratospheric aerosol injection and interpreting lidar signals, where accurate optical models of cosmic dust are of great importance. [ABSTRACT FROM AUTHOR]
Copyright of Russian Physics Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Absorption effect on light scattering by dust particles in physical optics approximation.
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  Data: <searchLink fieldCode="AR" term="%22Salnikov%2C+K%2E+S%2E%22">Salnikov, K. S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1015k@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Kustova%2C+N%2E+V%2E%22">Kustova, N. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kustova@iao.ru</i><br /><searchLink fieldCode="AR" term="%22Timofeev%2C+D%2E+N%2E%22">Timofeev, D. N.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tdn@iao.ru</i><br /><searchLink fieldCode="AR" term="%22Tkachev%2C+I%2E+V%2E%22">Tkachev, I. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tiv@iao.ru</i><br /><searchLink fieldCode="AR" term="%22Konoshonkin%2C+A%2E+V%2E%22">Konoshonkin, A. V.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> a.kon@iao.ru</i>
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  Data: <searchLink fieldCode="JN" term="%22Russian+Physics+Journal%22">Russian Physics Journal</searchLink>. Jul2025, Vol. 68 Issue 7, p972-977. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Light+scattering%22">Light scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+optics%22">Physical optics</searchLink><br /><searchLink fieldCode="DE" term="%22Graphite%22">Graphite</searchLink><br /><searchLink fieldCode="DE" term="%22Silica%22">Silica</searchLink><br /><searchLink fieldCode="DE" term="%22Aerosol+analysis%22">Aerosol analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+reflection%22">Optical reflection</searchLink><br /><searchLink fieldCode="DE" term="%22Dust%22">Dust</searchLink><br /><searchLink fieldCode="DE" term="%22Backscattering%22">Backscattering</searchLink>
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  Data: The paper investigates the scattering properties of cosmic dust particles using physical optics approximation, focusing on the identification of conditions under which the backscattered signal can be approximated by the specular component only. The analysis is given to the light scattering by irregular dust particles ranging in size from 5 to 100 μm, including pyroxene glass (n = 1.6847 + i0.0373) and graphite (n = 1.48 + i0.003). Geometrical parameters of the particles are measured for a statistically representative selection. It is found that for weakly absorbing materials like graphite, the backscattered signal becomes purely specular at the particle size exceeding 100 μm, whereas for strongly absorbing particles such as pyroxene glass, this occurs at 5 μm particles. Research findings are relevant for modeling stratospheric aerosol injection and interpreting lidar signals, where accurate optical models of cosmic dust are of great importance. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Russian Physics Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11182-025-03517-w
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        Text: English
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        Type: general
      – SubjectFull: Physical optics
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      – SubjectFull: Graphite
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      – SubjectFull: Silica
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      – SubjectFull: Aerosol analysis
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      – SubjectFull: Optical reflection
        Type: general
      – SubjectFull: Dust
        Type: general
      – SubjectFull: Backscattering
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      – TitleFull: Absorption effect on light scattering by dust particles in physical optics approximation.
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            NameFull: Salnikov, K. S.
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              M: 07
              Text: Jul2025
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              Y: 2025
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