Characteristics of a heavy water photoneutron source in boron neutron capture therapy

作     者：Danial Salehi Dariush Sardari M. Salehi Jozani 

作者机构：Department of Radiological and Nuclear Engineering Science and Research Branch Islamic Azad University Department of Electrical Engineering Islamic Azad University South Tehran Branch 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2013年第37卷第7期

页      面：88-92页

核心收录：

学科分类：0709[理学-地质学] 08[工学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0703[理学-化学] 0704[理学-天文学] 0702[理学-物理学] 

主　　题：BNCT photoneutron source linac heavy water 

摘      要：Bremsstrahlung photon beams produced by medical linear accelerators are currently the most commonly used method of radiation therapy for cancerous tumors. Photons with energies greater than 8-10 MeV potentially generate neutrons through photonuclear interactions in the accelerator＇s treatment head, patient＇s body, and treat- ment room ambient. Electrons impinging on a heavy target generate a cascade shower of bremsstrahlung photons, the energy spectrum of which shows an end point equal to the electron beam energy. By varying the target thickness, an optimum thickness exists for which, at the given electron energy, maximum photon flux is achievable. If a source of high-energy photons i.e. bremsstrahlung, is conveniently directed to a suitable D20 target, a novel approach for production of an acceptable flux of filterable photoneturons for boron neutron capture therapy （BNCT） application is possible. This study consists of two parts. 1. Comparison and assessment of deuterium photonuclear cross section data. 2. Evaluation of the heavy water photonuclear source.