The penetration, diffusion and energy deposition of high-energy photon

doi:10.1088/1009-1963/12/7/319

中国物理B ›› 2003, Vol. 12 ›› Issue (7): 803-808.doi: 10.1088/1009-1963/12/7/319

• 8000 CROSSDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇

The penetration, diffusion and energy deposition of high-energy photon

罗正明¹, 勾成俊¹, Wolfram Laub²

(1)Institute of Nuclear Science and Technology, Sichuan University and Key Laboratory for Radiation Physics and Technology of the Education Ministry of China, Chengdu 610064, China; (2)Radiation Oncology, William Beaumont Hospital, 3601 West 13 Mile Road, Royal Oak, Michigan 48073-6769, USA

收稿日期:2002-12-26 修回日期:2003-03-18 出版日期:2005-03-16 发布日期:2005-03-16
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No 10075033) and the International Atomic Energy Agency (Grant No 8064/RB).

The penetration, diffusion and energy deposition of high-energy photon

Luo Zheng-Ming (罗正明)^a, Gou Cheng-Jun (勾成俊)^a, Wolfram Laub^b

^a Institute of Nuclear Science and Technology, Sichuan University and Key Laboratory for Radiation Physics and Technology of the Education Ministry of China, Chengdu 610064, China; ^b Radiation Oncology, William Beaumont Hospital, 3601 West 13 Mile Road, Royal Oak, Michigan 48073-6769, USA

Received:2002-12-26 Revised:2003-03-18 Online:2005-03-16 Published:2005-03-16
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No 10075033) and the International Atomic Energy Agency (Grant No 8064/RB).

摘要/Abstract

摘要： This paper presents a new theory for calculating the transport of high-energy photons and their secondary charged particles. We call this new algorithm characteristic line method, which is completely analytic. Using this new method we cannot only accurately calculate the transport behaviour of energetic photons, but also precisely describes the transport behaviour and energy deposition of secondary electrons, photoelectrons, Compton recoil electrons and positron－electron pairs. Its calculation efficiency is much higher than that of the Monte Carlo method. The theory can be directly applied to layered media situation and obtain a pencil-beam-modelled solution. Therefore, it may be applied to clinical applications for radiation therapy.

Abstract: This paper presents a new theory for calculating the transport of high-energy photons and their secondary charged particles. We call this new algorithm characteristic line method, which is completely analytic. Using this new method we cannot only accurately calculate the transport behaviour of energetic photons, but also precisely describes the transport behaviour and energy deposition of secondary electrons, photoelectrons, Compton recoil electrons and positron－electron pairs. Its calculation efficiency is much higher than that of the Monte Carlo method. The theory can be directly applied to layered media situation and obtain a pencil-beam-modelled solution. Therefore, it may be applied to clinical applications for radiation therapy.

Key words: high-energy photon, energy deposition, characteristic line method

中图分类号: (Quantum transport)

05.60.Gg

罗正明, 勾成俊, Wolfram Laub. The penetration, diffusion and energy deposition of high-energy photon[J]. 中国物理B, 2003, 12(7): 803-808.

Luo Zheng-Ming (罗正明), Gou Cheng-Jun (勾成俊), Wolfram Laub. The penetration, diffusion and energy deposition of high-energy photon[J]. Chinese Physics, 2003, 12(7): 803-808.

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The penetration, diffusion and energy deposition of high-energy photon

The penetration, diffusion and energy deposition of high-energy photon

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