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《中国工程科学》 >> 2012年 第14卷 第8期

BNCT医院中子照射器辐射场特性参数初步测量

1. 中国原子能科学研究院,北京 102413;

2. 北京凯佰特科技有限公司,北京 102413

收稿日期: 2012-06-14 发布日期: 2012-07-26 09:05:09.000

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摘要

为验证BNCT医院中子照射器的设计效果,对其辐射场的特性参数如中子能谱、中子通量密度及其空间分布、中子和γ吸收剂量率及其空间分布等进行了测量。针对该照射器的特点,建立了一套由多球谱仪、235U裂变电离室、金箔、组织等效正比计数器和热释光探测器组成的测量系统,利用蒙特卡洛计算方法优化设计探测器的结构,以提高超热能区的分辨率和甄别不同能量成分中子的能力。初步测量结果表明,该照射器的中子通量密度达到了预期设计要求。

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参考文献

[ 1 ] Locher G L. Biological effects and therapeutic possibilities of neu-trons [J]. American Journal of Roentgenology , 1936, 36:1-13.

[ 2 ] Auterinen I, Serén T, Anttila K, et al. Measurement of freeneutron spectra at eight BNCT facilities worldwide [J]. Applied Radiation and Isotopes, 2004, 61: 1021-1026. 链接1

[ 3 ] Elisabetta Nava, Stefano Agosteo, Maurizio Angelone, et al. Pre-liminary characterization of the epithermal beam at the TAPIRO re-actor [C]//Proceedings of the 13th International Conference on Neutron Capture Therapy. Florence, 2008:537 -540.

[ 4 ] Ueda H, Tanaka H, Maruhashi A, et al. Spectral evaluation of cy-clotron-based epithermal neutron irradiation field for BNCT using Bonner Sphere [C]//Proceedings of 14th Intemnational Congress on Neutron Capture Therapy. Buenos Aires, Argentina, 2010:459 -462.

[ 5 ] Errico F d´, Ciolini R, Fulvio A Di, et al. Angle-and energy-differential neutron spectrometry for the SPES BNCT facility [J].Applied Radiation and Isotopes, 2009, 67 (7-8 suppl. ): 141-144 链接1

[ 6 ] Yasuhiro Unno, Shunsuke Yonai, Mamoru Baba, et al. Bench-mark experiments on neutron moderator assembly for cyclotron-based boron neutron capture therapy [C]//Proceedings of ICNCT -1212th International Congress on Neutron Capture Therapy. Takamat-su, Kagawa, Japan, 2006:331-334.

[ 7 ] Kononov V N, Bokhovko M V, Kononov O E, et al. The time-of-flight epithermal neutron spectrum measurement from accelerator based BNCT facility [C]//Proceedings of ICNCT-12 12th Inter-national Congress on Neutron Capture Therapy. TakamatsFu, Ka-gawa, Japan, 2006:368-370.

[ 8 ] Hamidi S. Scott M C. BNCT neutron beam characterization usinga resonance absorption filter method[J]. Nuclear Instruments and Methods in Physics Research A, 2002. 476:99-105. 链接1

[ 9 ] Antoaneta Roca, Yuan-Hao Liu, Cecile Wojnecki, et al. A pre-liminary inter-centre comparison study for photon, thermal neutron and epithermal neutron responses of two pairs of ionization cham-bers used for BNCT [J]. Applied Radiation and Isotopes, 2009,67(7-8 suppl. ):134 -136 链接1

[10] Fuji T., Tanaka H, Maruhashi A, et al. Study on optimization of multi ionization-chamber system for BNCT C1//Proceedings of14th International Congress on Neutron Capture Therapy. Buenos Aires, Argentina, 2010:177-180.

[11] Almaviva S, Macro Marinelli, Milani E, et al. Thermal neutron dosimeter by synthetic single crystal diamond devices [J]. Applied Radiation and Isotopes, 2009, 67 (7-8 suppl.): 183-185. 链接1

[12] Marek M. Viererbl L.. Spatial characterization of BNCT beams[J]. Applied Radiation and Isotopes, 2004, 61 :1051-1055. 链接1

[13] Ming-Chen Hsiao, Wei-Lin Chen, Pi-En Tsai, et al. A prelimi-nary study on using the radiochromic film for 2D beam profile QC/QA at the THOR BNCT facility [C1//Proceedings of 14th International Congress on Neutron Capture Therapy. Buenos Aires, Argentina, 2010:203 -206.

[14] Gambarini G. Klamert V. Agosteo S, et al. Study of a methodl based on TLD detectors for in-phantom dosimetry in BNCT[J]Radiation Protection Dosimetry, 2004, 110 (1-4): 631-636. 链接1

[15] Endo S, Onizuka Y, Ishikawa M, et al. Microdosimetry of neu-tron field for boron neutron capture therapy at Kyoto University reactor[J]. Radiation Protection Dosimetry, 2004, 110(1-4):641-644 链接1

[16] Fang-Yuh Hsu, Hsiu-Wen Hsiao, Chuan-Jong Tung, et al. Mi-crodosimetry study of THOR BNCT beam using tissue equinalent proportional counter[J]. Applied Radiation and Isotopes, 2009,67 (7-8 suppl. ) :175 -178. 链接1

[17] Bartolotta A. M C D´ Oca, B Lo Giudice, et al. Combined TL.and 1 B-Alanine ESR dosimetry for BNCT [J]. Radiation Pro-tection Dosimetry, 2004, 110(1-4):627-630. 链接1

[18] Baetesaghi G, Burian J, Gambarini G, et al. Evaluation of all dose components in the LVR-15 reactor epithermal neutron beam using Fricke gel dosimeter layers [J]. Applied Radiation and Isotopes , 2009, 67 (7-8 suppl. ):199-201. 链接1

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