Neutron response of GafChromic® EBT2 film

被引：4

作者：

Hsiao, Ming-Chen ^{[1
]}

Liu, Yuan-Hao ^{[2
]}

Chen, Wei-Lin ^{[1
]}

Jiang, Shiang-Huei ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Inst Nucl Engn & Sci, Hsinchu 30013, Taiwan

[2] Natl Tsing Hua Univ, Nucl Sci & Technol Dev Ctr, Hsinchu 30013, Taiwan

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 2013年 / 58卷 / 05期

关键词：

ENERGY-DEPENDENCE; NUCLEAR-DATA; WIDE-RANGE; BNCT; DOSIMETRY; SCIENCE; BEAMS;

D O I：

10.1088/0031-9155/58/5/1391

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Neutron and gamma-ray mixed field dosimetry remains one of the most challenging topics in radiation dosimetry studies. However, the requirement for accurate mixed field dosimetry is increasing because of the considerable interest in high-energy radiotherapy machines, medical ion beams and BNCT epithermal neutron beams. Therefore, this study investigated the GafChromic (R) EBT2 film. The linearity, reproducibility, energy dependence and homogeneity of the film were tested in a Co-60 medical beam, 6-MV LINAC and 10-MV LINAC. The linearity and self-developing effect of the film irradiated in an epithermal neutron beam were also examined. These basic detector characteristics showed that EBT2 film can be effectively applied in mixed field dosimetry. A general detector response model was developed to determine the neutron relative effectiveness (RE) values. The RE value of fast neutrons varies with neutron spectra. By contrast, the RE value of thermal neutrons was determined as a constant; it is only 32.5% in relation to gamma rays. No synergy effect was observed in this study. The lithium-6 capture reaction dominates the neutron response in the thermal neutron energy range, and the recoil hydrogen dose becomes the dominant component in the fast neutron energy region. Based on this study, the application of the EBT2 film in the neutron and gamma-ray mixed field is feasible.

引用

页码：1391 / 1413

页数：23

共 27 条

[1] Radiochromic EBT2 film dosimetry for low-energy protontherapy [J].

Angellier, G. ;

Gautier, M. ;

Herault, J. .

MEDICAL PHYSICS, 2011, 38 (11) :6171-6177

[2]

[Anonymous], 2009, Gafchromic EBT2 self-developing film for radiotherapy dosimetry

[3] EBT2 film as a depth-dose measurement tool for radiotherapy beams over a wide range of energies and modalities [J].

Arjomandy, Bijan ;

Tailor, Ramesh ;

Zhao, Li ;

Devic, Slobodan .

MEDICAL PHYSICS, 2012, 39 (02) :912-921

[4] Energy dependence and dose response of Gafchromic EBT2 film over a wide range of photon, electron, and proton beam energies [J].

Arjomandy, Bijan ;

Tailor, Ramesh ;

Anand, Aman ;

Sahoo, Narayan ;

Gillin, Michael ;

Prado, Karl ;

Vicic, Milos .

MEDICAL PHYSICS, 2010, 37 (05) :1942-1947

[5]

Attix F H, 1986, INTRO RADIOLOGICAL P, P231

[6]

Berger MJ., 2005, ESTAR, PSTAR, and ASTAR: Computer programs for calculating Stopping-Power and range Tables for electrons. Protons, and Helium Ions (version 1.2.3)

[7] THEORY OF RBE FOR HEAVY ION BOMBARDMENT OF DRY ENZYMES AND VIRUSES [J].

BUTTS, JJ ;

KATZ, R .

RADIATION RESEARCH, 1967, 30 (04) :855-&

[8] ENDF/B-VII.0: Next generation evaluated nuclear data library for nuclear science and technology [J].

Chadwick, M. B. ;

Oblozinsky, P. ;

Herman, M. ;

Greene, N. M. ;

McKnight, R. D. ;

Smith, D. L. ;

Young, P. G. ;

MacFarlane, R. E. ;

Hale, G. M. ;

Frankle, S. C. ;

Kahler, A. C. ;

Kawano, T. ;

Little, R. C. ;

Madland, D. G. ;

Moller, P. ;

Mosteller, R. D. ;

Page, P. R. ;

Talou, P. ;

Trellue, H. ;

White, M. C. ;

Wilson, W. B. ;

Arcilla, R. ;

Dunford, C. L. ;

Mughabghab, S. F. ;

Pritychenko, B. ;

Rochman, D. ;

Sonzogni, A. A. ;

Lubitz, C. R. ;

Trumbull, T. H. ;

Weinman, J. P. ;

Brown, D. A. ;

Cullen, D. E. ;

Heinrichs, D. P. ;

McNabb, D. P. ;

Derrien, H. ;

Dunn, M. E. ;

Larson, N. M. ;

Leal, L. C. ;

Carlson, A. D. ;

Block, R. C. ;

Briggs, J. B. ;

Cheng, E. T. ;

Huria, H. C. ;

Zerkle, M. L. ;

Kozier, K. S. ;

Courcelle, A. ;

Pronyaev, V. ;

van der Marck, S. C. .

NUCLEAR DATA SHEETS, 2006, 107 (12) :2931-3059

[9] ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data [J].

Chadwick, M. B. ;

Herman, M. ;

Oblozinsky, P. ;

Dunn, M. E. ;

Danon, Y. ;

Kahler, A. C. ;

Smith, D. L. ;

Pritychenko, B. ;

Arbanas, G. ;

Arcilla, R. ;

Brewer, R. ;

Brown, D. A. ;

Capote, R. ;

Carlson, A. D. ;

Cho, Y. S. ;

Derrien, H. ;

Guber, K. ;

Hale, G. M. ;

Hoblit, S. ;

Holloway, S. ;

Johnson, T. D. ;

Kawano, T. ;

Kiedrowski, B. C. ;

Kim, H. ;

Kunieda, S. ;

Larson, N. M. ;

Leal, L. ;

Lestone, J. P. ;

Little, R. C. ;

McCutchan, E. A. ;

MacFarlane, R. E. ;

MacInnes, M. ;

Mattoon, C. M. ;

McKnight, R. D. ;

Mughabghab, S. F. ;

Nobre, G. P. A. ;

Palmiotti, G. ;

Palumbo, A. ;

Pigni, M. T. ;

Pronyaev, V. G. ;

Sayer, R. O. ;

Sonzogni, A. A. ;

Summers, N. C. ;

Talou, P. ;

Thompson, I. J. ;

Trkov, A. ;

Vogt, R. L. ;

van der Marck, S. C. ;

Wallner, A. ;

White, M. C. .

NUCLEAR DATA SHEETS, 2011, 112 (12) :2887-2996

[10] EXPERIMENTAL AND CALCULATED RESPONSE OF A RADIOCHROMIC DYE FILM DOSIMETER TO HIGH-LET RADIATIONS [J].

HANSEN, JW ;

OLSEN, KJ .

RADIATION RESEARCH, 1984, 97 (01) :1-15

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