The diffusion coefficient depends on absorption

被引：53

作者：

Durian, DJ ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

OPTICS LETTERS | 1998年 / 23卷 / 19期

关键词：

D O I：

10.1364/OL.23.001502

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The diffusion approximation is widely invoked to model the propagation of light in turbid media. When absorption is not weak in comparison with scattering, there is currently a controversy as to if, and how, the diffusion coefficient depends on absorption, Here it is shown that better agreement with random walk simulation is obtained if the photon-diffusion coefficient is taken as D = c/(3 mu(s)' + mu(a)). One can reconcile this result with recent work advocating D = c/3 mu(s)' by noting that the diffusion equation must be correspondingly changed to a telegrapher's equation. (C) 1998 Optical Society of America.

引用

页码：1502 / 1504

页数：3

共 13 条

[1]

ARONSON R, UNPUB J OPT SOC AM A

[2] Independence of the diffusion coefficient from absorption: Experimental and numerical evidence [J].

Bassani, M ;

Martelli, F ;

Zaccanti, G ;

Contini, D .

OPTICS LETTERS, 1997, 22 (12) :853-855

[3]

CASE KM, 1979, LINEAR TRANSPORT THE

[4]

DUDERSTADT JJ, 1967, TRANSPORT THEORY

[5] Does the photon-diffusion coefficient depend on absorption? [J].

Durduran, T ;

Yodh, AG ;

Chance, B ;

Boas, DA .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1997, 14 (12) :3358-3365

[6] Photon migration at short time and distances and in cases of strong absorption [J].

Durian, DJ ;

Rudnick, J .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1997, 14 (01) :235-245

[7] DIFFUSION-APPROXIMATION FOR A DISSIPATIVE RANDOM MEDIUM AND THE APPLICATIONS [J].

FURUTSU, K ;

YAMADA, Y .

PHYSICAL REVIEW E, 1994, 50 (05) :3634-3640

[8] BOUNDARY-CONDITIONS FOR THE DIFFUSION EQUATION IN RADIATIVE-TRANSFER [J].

HASKELL, RC ;

SVAASAND, LO ;

TSAY, TT ;

FENG, TC ;

MCADAMS, MS ;

TROMBERG, BJ .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1994, 11 (10) :2727-2741

[9] DIFFUSION OF LIGHT IN TURBID MATERIAL [J].

ISHIMARU, A .

APPLIED OPTICS, 1989, 28 (12) :2210-2215

[10] Photon-density modes beyond the diffusion approximation: Scalar wave-diffusion equation [J].

Polishchuk, AY ;

Gutman, S ;

Lax, M ;

Alfano, RR .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1997, 14 (01) :230-234

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