A numerical approach to calculate the full-energy peak efficiency of HPGe well-type detectors using the effective solid angle ratio

被引：28

作者：

Badawi, M. S. ^{[1
]}

Ruskov, I. ^{[2
,3
]}

Gouda, M. M. ^{[1
]}

El-Khatib, A. M. ^{[1
]}

Alotiby, M. F. ^{[4
]}

Mohamed, M. M. ^{[5
]}

Thabet, A. A. ^{[5
]}

Abbas, M. I. ^{[1
]}

机构：

[1] Univ Alexandria, Fac Sci, Dept Phys, Alexandria 21511, Egypt

[2] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia

[3] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria

[4] King Abdulaziz City Sci & Technol, Riyadh 1144, Saudi Arabia

[5] Pharos Univ Alexandria, Dept Med Equipment Technol, Alexandria, Egypt

来源：

JOURNAL OF INSTRUMENTATION | 2014年 / 9卷

关键词：

Solid state detectors; Gamma detectors (scintillators; CZT; HPG; HgI etc); Gamma detectors; Detector modelling and simulations I (interaction of radiation with matter; interaction of photons with matter; interaction of hadrons with matter etc); COINCIDENCE-SUMMING CORRECTIONS; GAMMA-RAYS; NAI TL; GE; CALIBRATE;

D O I：

10.1088/1748-0221/9/07/P07030

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In the field of gamma-ray spectroscopy with HPGe detectors, applied to measurements of activity when the sample to be measured is small and has low radioactivity, the well-type HPGe detectors are widely used. To determine the sample activity, the full-energy peak efficiency is needed. In this work, the efficiency transfer method (ET) in an integral form is proposed to calculate the full-energy peak efficiency and to correct the coincidence summing effect for the HPGe well-type detector. This approach is based on the calculation of the effective solid angles ratio for a well-type detector with a cylindrical source inside and an axial point source outside the detector cavity, taking into account the attenuation of the gamma-rays. The calculated values of the full-energy peak efficiency are found to be in a good agreement with the measured experimental data obtained by using a mixed radionuclide gamma-ray source containing Co-60 and Y-88.

引用

页数：19

共 2 条

[1] Mathematical method to calculate full-energy peak efficiency of detectors based on transfer technique
Gouda, M. M.
Hamzawy, A.
Badawi, M. S.
El-Khatib, A. M.
Thabet, A. A.
Abbas, M. I.
INDIAN JOURNAL OF PHYSICS, 2016, 90 (02) : 201 - 210
[2] Derivation of an efficiency-calibration simulation for a well-type HPGe detector using the Monte Carlo approach and analytical techniques
Belgin, E. Eren
Aycik, G. A.
RADIATION MEASUREMENTS, 2015, 73 : 36 - 45

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