محاسبه ضریب تضعیف جرمی چوب ریزوفورا به عنوان ماده معادل بافت با کمک کد MCNPX

نویسندگان

دانشگاه صنعتی امیرکبیر

10.22052/5.2.13

چکیده

چوب ریزوفورا نوعی چوب است که خواص اندرکنشی آن با پرتو، مشابه با آب می‌باشد. اخیراً یک مدل جدید مبتنی بر کد MCNP4C برای محاسبه ضرایب تضعیف جرمی چند پلیمر پیشنهاد شده است. هدف از این مقاله، محاسبه ضریب تضعیف جرمی چوب ریزوفورا در محدوده انرژی بین 77/15 تا60 کیلوالکترون‌ولت با استفاده از این مدل می‌باشد. مدل مذکور در ابتدا برای بافت نرم، پستان و آب مورد استفاده قرار گرفت و پس از اعتبارسنجی با داده‌های XCOM، برای این چوب به­کار گرفته شد. خطای نسبی شبیه‌سازی همواره کمتر از %55/0 بوده است. نتایج حاصل‌شده تطابق خوبی با داده‌های XCOM داشتند.

کلیدواژه‌ها


عنوان مقاله [English]

Calculation of mass attenuation coefficient for Rhizophora as a tissue equivalent using MCNPX

نویسندگان [English]

  • Seyed Milad Vahabi
  • Mostean Bahreinipour
  • Mojtaba Shamsaie Zafarghandi
چکیده [English]

Rhizophora wood exhibits characteristics of interaction with radiation similar to those of water. Recently, a novel model based on MCNP4C code has been proposed for calculation of mass attenuation coefficients for some polymers. The aim of this study is to determine the mass attenuation coefficients for Rhizophora wood in energy range 15.77-60 keV using this model. First, the mentioned model was utilized for soft tissue, breast and water and after validation with XCOM data, was used for the wood. The relative error was always less than 0.55%. The results were compared with XCOM data and good agreement was observed.
 

کلیدواژه‌ها [English]

  • Mass attenuation coefficient
  • Rhizophora wood
  • MCNPX
  • Tissue equivalent
  • XCOM
[1] H. Cember, Introduction to Health Physics. McGraw-Hill, New York, (2000). [2] N. Ekinci, N. Astam. Measurement of mass attenuation coefficients of biological materials by energy dispersive X-ray fluorescence spectrometry. Radiat. Meas. 42(3) (2007) 428–430. [3] S. Gowda, S. Krishnaveni, T. Yashoda, T. Umesh, R. Gowda. Photon mass attenuation coefficients, effective atomic numbers and electron densities of some thermoluminescent dosimetric compounds. Pramana. 63(3) (2004) 529–541. [4] G. Bhandal, K. Singh, R. Rani, V. Kumar. Energy absorption coefficients for 662 and 1115 keV gamma rays in some fatty acids. Appl. Radiat. Isot. 45(3) (1994) 379–381. [5] U.u. Çevik, H. Baltaş, A. Çelik, E. Bacaksız. Determination of attenuation coefficients, thicknesses and effective atomic numbers for CuInSe2 semiconductor. Nucl. Instrum. Methods. Phys. Res. B. 247(2) (2006) 173–179. [6] A. Akar, H. Baltaş, U. Çevik, F. Korkmaz, N. Okumuşoğlu. Measurement of attenuation coefficients for bone, muscle, fat and water at 140, 364 and 662keV γ-ray energies. J. Quant. Spectrosc. Radiat. Transf. 102(2) (2006) 203–211. [7] V. Manjunathaguru, T. Umesh. Simple parametrization of photon mass energy absorption coefficients of H-, C-, N-and O-based samples of biological interest in the energy range 200–1500 keV. Pramana. 72(2) (2009) 375–387. [8] O. Gurler, U.A. Tarim. An investigation on determination of attenuation coefficients for gamma-rays by Monte Carlo method. J. Radioanal. Nucl. Chem. 293(1) (2012) 397–401. [9] S. Sharifi, R. Bagheri, S. Shirmardi. Comparison of shielding properties for ordinary, barite, serpentine and steel–magnetite concretesusing MCNP-4C code and available experimental results. Ann. Nucl. Energy. 53 (2013) 529–534. [10] N. Demir, U.A. Tarim, M.-A. Popovici, Z.N. Demirci, O. Gurler, I. Akkurt. Investigation of mass attenuation coefficients of water, concrete and bakelite at different energies using the FLUKA Monte Carlo code. J Radioanal. Nucl. Chem. 298(2) (2013) 1303–1307. [11] P.S. Kore, P.P. Pawar. Measurements of mass attenuation coefficient, effective atomic number and electron density ofsome amino acids. Radiat. Phys. Chem. 98 (2014) 86–91. [12] V. Singh, N. Badiger, N. Kucuk. Assessment of methods for estimation of effective atomic numbers of common human organs and tissue substitutes: waxes, plastics and polymers. J. Radioprot. 49(2) (2014) 115–121. [13] A. El-Khayatt, A. Ali, V.P. Singh. Photon attenuation coefficients of Heavy-Metal Oxide glasses by MCNP code, XCOM program and experimental data: A comparison study. Nucl. Instrum. Methods. Phys. Res. A. 735 (2014) 207–212. [14] V. Trunova, A. Sidorina, V. Kriventsov. Measurement of X-ray mass attenuation coefficients in biological and geological samples in the energy range of 7–12keV. Appl. Radiat. Isot. 95 (2015) 48–52. [15] A. Vejdani-Noghreiyan, E. Aliakbari, A. Ebrahimi-Khankook, M. Ghasemifard. Theoretical and experimental determination of mass attenuation coefficients of lead-based ceramics and their comparison with simulation. Radiat. Prot. Dosimetry. 31(2) (2016) 142–149. [16] S.M. Vahabi, M. Bahreinipour, M.S. Zafarghandi. Determining the mass attenuation coefficients for some polymers using MCNP code: A comparison study. Vacuum. (2016). [17] F.M. Khan, J.P. Gibbons. Khan's the physics of radiation therapy. Lippincott Williams & Wilkins (2014). [18] D. Banjade, A. Tajuddin, A. Shukri. A study of Rhizophora spp wood phantom for dosimetric purposes using high-energy photon and electron beams. Appl. Radiat. Isot. 55(3) (2001) 297–302. [19] M.W. Marashdeh, R. Hashim, A.A. Tajuddin, S. Bauk, O. Sulaiman. Effect of particle size on the characterization of binderless particleboard made from Rhizophora spp. Mangrove wood for use as phantom material. BioResources 6(4) (2011) 4028–4044. [20] M. Marashdeh, S. Bauk, A. Tajuddin, R. Hashim. Measurement of mass attenuation coefficients of Rhizophora spp. binderless particleboards in the 16.59–25.26 keV photon energy range and their density profile usingx-ray computed tomography. Appl. Radiat. Isot. 70(4) (2012) 656–662. [21] A. Abuarra, S. Bauk, R. Hashim, S. Kandaiya, E.T. Tousi, K. Aldroobi. Microstructure examination, elemental composition analysis of gum arabic bonded Rhizophora spp. Particleboards and their potential as tissue equivalent material. Int. J. Chem. Environ. Biol. Sci. 2(1) (2014) 2320–4087. [22] D. Bradley, A. Tajuddin, C.W.A.C.W. Sudin, S. Bauk. Photon attenuation studies on tropical hardwoods. Int. J. Rad. Appl. Instrum. A. 42(8) (1991) 771–773. [23] A. Tajuddin, C.C.W. Sudin, D. Bradley. Radiographic and scattering investigation on the suitability of Rhizophora sp. as tissue-equivalent mediumfor dosimetric study. Radiat. Phys. Chem. 47(5) (1996) 739–740. [24] B. Shakhreet, S. Bauk, A. Tajuddin, A. Shukri. Mass attenuation coefficients of natural Rhizophora spp. wood for X-rays in the 15.77–25.27 keV range. Radiat. Prot. Dosimetry. 135(1) (2009) 47–53. [25] M.W. Marashdeh, I.F. Al-Hamarneh, E.M.A. Munem, A. Tajuddin, A. Ariffin, S. Al-Omari. Determining the mass attenuation coefficient, effective atomic number, and electron density of raw wood and binderless particleboards of Rhizophora spp. by using Monte Carlo simulation. Results. Phys. 5 (2015) 228–234. [26] M. Berger, J. Hubbell. Photon Cross section on a Personal Computer (XCOM). Center for Radiation Research of Standards. MD 20899. [27] http://physics.nist.gov/PhysRefData/Xcom/Text/XCOM.html. [28] M. Bethesda. Tissue substitutes in radiation dosimetry and measurement. International Commission on Radiation Units and Measurements (ICRU), (1989). [29] M. Medhat, S. Shirmardi, V. Singh. Comparison of geant 4, MCNP simulation codes of studying attenuation of gamma rays through biological materials with XCOM and experimental data. J. Comput. Appl. Math. (2014). [30] V. Singh, S. Shirmardi, M. Medhat, N. Badiger. Determination ofmass attenuation coefficient for some polymers using Monte Carlo simulation. Vacuum. 119 (2015) 284–288. [31] S. Jayaraman, L.H. Lanzl. Clinical radiotherapy physics, Springer Science & Business Media, (2011).