A model of optical reflection on rough surface and its application to Monte Carlo simulation of light transport

Author

Tomitani, Takehiro

Author_Institution

Div. of Radiat. Res., Nat. Inst. of Radiol. Sci., Chiba, Japan

Volume

43

Issue

3

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

1544

Lastpage

1548

Abstract

Photon transport is important for designing an optical system of scintillation counters or Cherenkov counters. Monte Carlo simulations are useful in predicting the characteristics, since they are flexible and cost us less. Optical reflection is an important part of such simulation studies. Light reflection on a rough surface is usually treated by Lambert´s law that holds for reflection on an isotropically diffusive surface, while mirror reflection is the other extreme case. P. Beckmann´s theory (1967) of reflection on rough surfaces lies in-between. A Monte Carlo program was developed based on this model. The programs were tested on the calculations of light collection efficiency and photon transport problems. The results were compared with those with pure mirror reflectors and that with isotropically diffusive reflectors

Keywords

Cherenkov counters; Monte Carlo methods; electromagnetic wave scattering; light reflection; photon transport theory; scintillation; solid scintillation detectors; Cherenkov counters; Lambert law; Monte Carlo simulation; isotropically diffusive reflectors; isotropically diffusive surface; light collection efficiency; light reflection; light transport; mirror reflection; optical reflection; photon transport; pure mirror reflectors; rough surface; scintillation counters; Costs; Mirrors; Optical design; Optical reflection; Radiation detectors; Rough surfaces; Scintillation counters; Surface roughness; Surface treatment; Ultraviolet sources;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.507100

Filename

507100