Photophoresis of a spherical particle in a rarefied gas

On the basis of the linearized gas‐kinetic model equations solution (the BGK and the S model), a force affecting a unilaterally illuminated spherical particle in a rarefied gas is calculated. Numerical calculations of the photophoretic force and the particle motion velocity are carried out for the whole range of Knudsen numbers taking into account the particle’s thermophysical, optical, and accommodation properties. The results obtained are compared to the known theoretical and experimental data.

[1]  Z. Kam,et al.  Absorption and Scattering of Light by Small Particles , 1998 .

[2]  D. Mackowski.  Photophoresis of aerosol particles in the free molecular and slip-flow regimes , 1989 .

[3]  P. Bhatnagar,et al.  A Model for Collision Processes in Gases. I. Small Amplitude Processes in Charged and Neutral One-Component Systems , 1954 .

[4]  E. R. Shchukin,et al.  Motion of small aerosol particle in a light field , 1976 .

[5]  Stephen Arnold,et al.  Size dependence of the photophoretic force , 1982 .

[6]  S. P. Lin,et al.  Photophoresis of absorbing particles , 1977 .

[7]  N. Tong.  Photophoretic force in the free molecule and transition regimes , 1973 .

[8]  M. Kerker,et al.  Photophoretic force on aerosol particles in the free-molecule regime , 1982 .

[9]  M. Kerker,et al.  Distribution of absorption centers within irradiated spheres , 1979 .

[10]  L. D. Reed.  Low Knudsen number photophoresis , 1977 .

[11]  C. Orr,et al.  The photophoretic force , 1964 .

[12]  S. Arnold,et al.  Broadband photophoretic spectroscopy. , 1980, Optics letters.

[13]  P. E. Suetin,et al.  Motion of a spherical particle in a rarefied gas. Part 1. A liquid particle in its saturated vapour , 1987, Journal of Fluid Mechanics.

[14]  J. R. Brock.  Photophoresis and the Descent of Particles into the Lower Stratosphere G. M. HDY National Centeror Atmospheric Research, Boulder, Colorado , 1967 .

[15]  E. M. Shakhov.  Generalization of the Krook kinetic relaxation equation , 1968 .

[16]  Kok-Ming Leung,et al.  Influence of surface-mode-enhanced local fields on photophoresis , 1984 .

[17]  N. Tong,et al.  Experiments on photophoresis and thermophoresis , 1975 .

[18]  S. Gorelov.  Thermophoresis and photophoresis in a rarefied gas , 1976 .

[19]  Mikhail Naumovich Kogan,et al.  Rarefied Gas Dynamics , 1969 .

[20]  S. Mikhlin,et al.  Variational Methods in Mathematical Physics , 1965 .

[21]  M. Sitarski.  Nonlinear photophoretic response of submicrometer coated aerosol particles to electromagnetic radiation , 1985 .

[22]  S. A. Beresnev,et al.  Motion of a spherical particle in a rarefied gas. Part 2. Drag and thermal polarization , 1990, Journal of Fluid Mechanics.

[23]  J. Longwell,et al.  Photophoresis of irradiated spheres: absorption centers , 1985 .

[24]  C. N. Davies,et al.  The Mechanics of Aerosols , 1964 .

[25]  Y. Sone,et al.  Forces on a spherical particle in a slightly rarefied gas , 1977 .

[26]  E. R. Shchukin,et al.  Theory of the photophoretic motion of the large-size volatile aerosol particle , 1976 .

[27]  C. Orr,et al.  Photophoretic Effects in the Stratosphere , 1964 .

[28]  L. Brosseau.  Aerosols: Science, industry, health and environment: Volumes I and II, edited by S. Masuda and K. Takahashi. Pergamon Press, Oxford (1990) , 1992 .