УДК: 621.039Krar M.E., Badawi M.S., El-Khatib A.M. USING THE EFFICIENCY TRANSFER METHOD TO CALCULATE THE (FEPE) FOR COMBINATION OF TWO G-DETECTORS BY USING RADIOACTIVE PARALLELEPIPED SOURCES The full energy peak efficiency (FEPE) of two g-detectors by using radioactive parallelepiped sources is computed using a new analytical approach. The approach based on the efficiency transfer method (ET), the effective solid angles and explains the effect of self– absorptions of the source matrix, the attenuation by the source container and the detector housing materials on the detector efficiency. The experimental calibration process was done using radioactive parallelepiped sources containing aqueous 152Eu radionuclide which produces photons with a wide range of energies from 121 up to 1408 keV. The comparison shows a good agreement between the measured and calculated efficiencies for the detector using parallelepiped sources.Ключевые слова: Efficiency Transfer Method (ET), Effective Solid Angle, Full Energy Peak Efficiency (FEPE), Self-Absorptions, Combination of g-Detectors and Radioactive Parallelepiped Sources.
Список использованной литературы:
 Y. S. Selim and M. I. Abbas, "Direct Calculation of the Total Efficiency of Cylindrical Scintillation Detectors for Extended Circular Sources," Radiat. Phys. Chem., 48 (1996) 23.
 Y. S. Selim and M. I. Abbas, "Analytical calculations of gamma scintillators effi ciencies II . Total efficiency for wide coaxial circular disk sources," Radiat. Phys. Chem., vol. 58 (2000) 15.
 M. I. Abbas, "HPGe detector photopeak efficiency calculation including self-absorption and coincidence corrections for Marinelli beaker sources using compact analytical expressions.," Appl. Radiat. Isot., 54 (2001) 761.
 M. I. Abbas, S. Nafee, and Y. S. Selim, "Calibration of cylindrical detectors using a simplified theoretical approach.," Appl. Radiat. Isot., 64 (2006) 1057.
 M. I. Abbas, "Direct mathematical method for calculating full-energy peak efficiency and coincidence corrections of HPGe detectors for extended sources," Nucl. Instrum. Methods Phys. Res. B, vol. 256, no. 1, pp. 554–557, Mar. 2007.
 A. Hamzawy, "Validation of analytical formula for the efficiency calibration of gamma detectors using coaxial and off-axis extended sources," Nucl. Instrum. Methods Phys. Res. A, 618(2010) 216.
 M. I. Abbas, Y. S. Selim, and M. Bassiouni, "HPGe detector photopeak efficiency calculation including self-absorption and coincidence corrections for cylindrical sources using compact analytical expressions," Radiation Physics and Chemistry,61 (2001) 429.
 M. I. Abbas, "A direct mathematical method to calculate the efficiencies of a parallelepiped detector for an arbitrarily positioned point source," Radiation Physics and Chemistry, 60 (2001) 3.
 M. I. Abbas, "Validation of analytical formulae for the efficiency calibration of gamma detectors used in laboratory and in-situ measurements.," Appl. Radiat. Isot., 64 (2006) 1661.
 M. I. Abbas, "Analytical formulae for well-type NaI (Tl) and HPGe detectors efficiency computation.," Appl. Radiat. Isot., 55 (2001) 245.
 M. I. Abbas and Y. S. Selim, "Calculation of relative full-energy peak efficiencies of well-type detectors," Nucl. Instrum. Methods Phys. Res. A, 480 (2002) 651.
 M. I. Abbas, "Analytical calculations of the solid angles subtended by a well-type detector at point and extended circular sources.," Appl. Radiat. Isot., industry and medicine, 64 (2006) 1048.
 M. I. Abbas, "Analytical approach to calculate the efficiency of 4 NaI(Tl) gamma-ray detectors for extended sources," Nucl. Instrum. Methods Phys. Res. A, 615 (2010) 48.
 A. M. El-khatib, M. S. Badawi, M. A. Elzaher, and A. A. Thabet, "New Analytical Approach to Calculate the Full Energy Peak Efficiency for NaI ( Tl ) Gamma-Ray Detector Using the Effective Solid Angle Method," International Journal of Instrumentation Science, 1 (2012) 25.
 M. S. Badawi, M. Abd-Elzaher, A. A. Thabet, A. M. El-khatib, "An empirical formula to calculate the full energy peak efficiency of scintillation detectors" Appl. Radiat. Isot. 74 (2013) 46.
 S. M. Diab, M. S. Badawi, A. M. El-khatib, S. S. Nafee, and E. A. El-, "Computation of the Efficiency of NaI ( Tl ) Detectors Using Radioactive Inverted Well Beaker Sources Based on Efficiency Transfer Technique," Journal of Advanced Research in Physics, 4 (2013) 1.
 T. Vidmar and A. Likar, "On the invariability of the total-to-peak ratio in gamma-ray spectrometry.," Appl. Radiat. Isot. 60 (2004) 191.
 M. C. Lepy, T. Altzitzoglou, et al. "Intercomparison of efficiency transfer software for gamma-ray spectrometry.," Appl. Radiat. Isot. 55 (2001) 493.
 L. Pibida, S. S. Nafee, M. Unterweger, M. M. Hammond, L. Karam, and M. I. Abbas, "Calibration of HPGe gamma-ray detectors for measurement of radioactive noble gas sources.," Appl. Radiat. Isot. 65 (2007) 225.
 J. H. Hubbell and S. M. Seltzer, "Tables of X-ray mass attenuation coefficients and mass energy-absorption coefficients 1 keV to 20 MeV for elements Z=1 to 92 and 48 additional substances of dosimetric interest," NISTIR-5632 USA., vol. 5632, 1995.
Авторы: Bаdаwi М.S., El-Кhаtib А.М., Krаr М.Е.