Characterization of the efficiency of a cubic NaI detector with rectangular cavity for axially positioned sources

被引：40

作者：

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

Noureddine, S. ^{[2
]}

Kopatch, Y. N. ^{[3
]}

Abbas, M., I ^{[4
]}

Ruskov, I. N. ^{[3
,5
]}

Grozdanov, D. N. ^{[3
,5
]}

Thabet, A. A. ^{[6
]}

Fedorov, N. A. ^{[3
,7
]}

Gouda, M. M. ^{[4
]}

Hramco, C. ^{[3
,8
]}

Abd-Elzaher, M. ^{[9
]}

Hamzawy, A. ^{[10
]}

Elsafi, M. ^{[4
]}

El-Khatib, A. M. ^{[4
]}

机构：

[1] Beirut Arab Univ, Fac Sci, Phys Dept, Beirut, Lebanon

[2] Lebanese Univ, Fac Sci, Phys Dept, Beirut, Lebanon

[3] JINR, Dubna, Russia

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

[5] BAS, Inst Nucl Res & Nucl Energy INRNE, Sofia, Bulgaria

[6] Pharos Univ Alexandria, Fac Allied Med Sci, Dept Med Equipment Technol, Alexandria, Egypt

[7] Lomonosov Moscow State Univ MSU, Fac Phys, Moscow, Russia

[8] Moldavian Acad Sci, Inst Chem, Kishinev, Moldova

[9] Arab Acad Sci Technol & Maritime Transport, Fac Engn, Dept Basic & Appl Sci, Alexandria, Egypt

[10] Umm Al Qura Univ, Al Jamoum Univ Coll, Phys Dept, Al Jamoum, Saudi Arabia

来源：

JOURNAL OF INSTRUMENTATION | 2020年 / 15卷 / 02期

关键词：

Imaging spectroscopy; Radiation-induced secondary-electron emission; ABSOLUTE PEAK EFFICIENCY; GAMMA-RAY DETECTORS; SCINTILLATION DETECTORS; CALCULATE;

D O I：

10.1088/1748-0221/15/02/P02013

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Scintillation NaI(Tl) crystals are typically utilized at room temperature for detection of energetic photons in high energy and nuclear physics research, non-destructive analysis of materials testing, safeguards, verification of nuclear treaty, geological exploration and therapeutic imaging. The present work provides a new geometry for the source-to-detector combination. A special order cubic detector with rectangular cavity was used. The mathematical expressions of the path-lengths traveled by the incident photon as well as the geometrical solid angle were derived. The detector efficiency was determined for an axially positioned standard point-like gamma-ray source using the analytical efficiency transfer technique. Geant4 Monte Carlo simulation code was also used to predict the detector response under the calibration geometry. The analytical efficiency transfer and Geant4 simulation results were compared with those obtained experimentally and a good agreement between them was shown.

引用

页数：13

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