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Czasopismo
2015 | 60 | 3 | 651-655
Tytuł artykułu

Application of the new Monte Carlo code AlfaMC to the calibration of alpha-particle sources

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Measurements of α-particle sources require corrections to the counting rate due to scattering and self-absorption in the source and the backing material. In this study, we describe a simple procedure to estimate these corrections using the new Monte Carlo code AlfaMC to consider the effects of scattering and self-absorption conjointly, and so to determine the activity of α emitters. The procedure proposed was applied to 235UO2 sources deposited on highly polished platinum backings. In general, the dependence of the efficiency with source thickness was in good agreement with a simple model considering a linear and a hyperbolic behavior for thin and thick sources, respectively, although significant deviations from this model were found for very thin sources. For these very thin sources, the Monte Carlo simulation revealed to be as a required method in the primary calibration of α-particle sources. The efficiency results obtained by simulation with AlfaMC were in agreement with available efficiency data.
Wydawca

Czasopismo
Rocznik
Tom
60
Numer
3
Strony
651-655
Opis fizyczny
Daty
wydano
2015-09-01
otrzymano
2014-09-24
zaakceptowano
2015-05-20
online
2015-09-25
Twórcy
  • Departamento de Física, Universidad de Extremadura, Avda. de Elvas s/n, 06006, Badajoz, Spain, Tel.: +34 924 289 537, Fax: +34 924 289 651, mjv@unex.es
  • Departamento de Informática y Estadística, Universidad Rey Juan Carlos, c/Tulipán s/n, 28933, Móstoles-Madrid, Spain
  • Departamento de Ingeniería Eléctrica, Electrónica y Automática, Universidad de Extremadura, Avda. de Elvas s/n, 06006, Badajoz, Spain
Bibliografia
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  • 2. Lucas, L. L., & Hutchinson, J. M. R. (1976). Study of the scattering correction for thick uranium-oxide and other α-particle sources - I: Theoretical. Appl. Radiat. Isot., 27, 35-42.
  • 3. Rossi, B. B., & Staub, H. H. (1949). Ionization chambers and counters. Experimental techniques. New York: McGraw-Hill.
  • 4. Semkow, T. M., Jeter, H. W., Parsa, B., Parekh, P. P., Haines, D. K., & Bari, A. (2005). Modeling of alpha mass-effi ciency curve. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 538, 790-800.
  • 5. White, P. H. (1970). Alpha and fission counting of thin foils of fissile material. Nucl. Instrum. Methods, 79, 1-12.
  • 6. Williams, E. J. (1940). Multiple scattering of fast electrons and alpha particles, and “curvature” of cloud tracks due to scattering. Phys. Rev., 58, 292-306.
  • 7. Ballaux, C. (1985). Note on the scattering corrections in 2 πα counting. Appl. Radiat. Isot., 36, 822-824.
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  • 9. Hutchinson, J. M. R., Lucas, L. L., & Mullen, P. A. (1976). Study of the scattering correction for thick uranium-oxide and other α-particle sources - II: Experimental. Appl. Radiat. Isot., 27, 43-45.
  • 10. Walker, D. H. (1965). An experimental study of the backscattering of 5.3-MeV alpha particles from platinum and monel metal. Appl. Radiat. Isot., 16, 183-189.[Crossref]
  • 11. Fernández Timón, A., Jurado Vargas, M., & Ziegler, J. F. (2014). Application of alpha particle transport to the modelization of effi ciency curves in proportional counters. J. Radioanal. Nucl. Chem., 302, 297-302.
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  • 13. Jurado Vargas, M., & Fernández Timón, A. (2004). Scattering and self-absorption corrections in the measurement of α-particle emitters in 2 π geometry. Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms, 217, 564-571.
  • 14. Jurado Vargas, M., & Fernández Timón, A. (2005). Dependence of self-absorption on thickness for thin and thick alpha-particle sources of UO2. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 548, 432-438.
  • 15. Ziegler, J. F., Biersack, J. P., & Littmark, U. (1985). The stopping and range of ions in solids. New York: Pergamon Press.
  • 16. Peralta, L., & Louro, A. (2014). AlfaMC: A fast alpha particles transport Monte Carlo code. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 737, 163-169.
  • 17. Berger, M. J., Coursey, J. S., Zucker, M. A., & Chang, J. (2011). Stopping-power and range tables for helium ions. Retrieved April 24, 2014, from http://physics.nist.gov/PhysRefData/Star/Text/ASTAR.html.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_nuka-2015-0113
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