Experimental and MC determination of HPGe detector efficiency in the 40–2754keV energy range for measuring point source geometry with the source-to-detector distance of 25cm

2006 ◽  
Vol 64 (10-11) ◽  
pp. 1346-1349 ◽  
Author(s):  
Pavel Dryak ◽  
Petr Kovar
Keyword(s):  
Point Source ◽  
Energy Range ◽  
Hpge Detector ◽  
Detector Efficiency ◽  
Measuring Point ◽  
Detector Distance ◽  
Source Geometry

scholarly journals Determination of relative and absolute efficiency functions in the range of 122 keV ÷ 8.5 MeV of HPGe detector

2015 ◽  
Vol 18 (2) ◽  
pp. 79-87
Author(s):  
Son An Nguyen ◽  
Lanh Dang ◽  
Minh Van Truong
Keyword(s):  
Quantitative Analysis ◽  
Neutron Activation ◽  
Point Source ◽  
Energy Range ◽  
Hpge Detector ◽  
Nuclear Reactor ◽  
Absolute Efficiency ◽  
Gamma Sources ◽  
Reaction 35Cl

Construction of detector is necessary. However, on large energy range the manufacturers could not also support the explicit function of relative and absolute efficiencies of detectors. One of the reasons is a restriction of energy range of gamma sources (normally < 3 MeV). This paper presents the results of construction of relative and absolute efficiency functions within a range from 122 keV to 8.5 MeV. The sources are used combining 152Eu point source and 36Cl activated isotope by thermal neutron captured reaction 35Cl of Dalat nuclear reactor (DNR) by 35Cl(n, γ)36Cl reaction. This result can be applied in determining quantitative analysis of samples of neutron activation and radioactivity chemistry

Determination of the HPGe detector efficiency in measurements of radioactivity in extended environmental samples

2017 ◽  
Vol 130 ◽  
pp. 34-42 ◽  
Author(s):  
Diango M. Montalván Olivares ◽  
M.V. Manso Guevara ◽  
Fermin G. Velasco
Keyword(s):  
Environmental Samples ◽  
Hpge Detector ◽  
Detector Efficiency

Routine Determination of X-Ray Detector Efficiencies Using Submicron Spheres of Pure Materials

1985 ◽  
Vol 43 ◽  
pp. 416-417
Author(s):  
Thomas F. Kelly
Keyword(s):  
Electron Microscope ◽  
Energy Range ◽  
Transmission Electron Microscope ◽  
Weight Fraction ◽  
Characteristic Line ◽  
X Rays ◽  
Detector Efficiency ◽  
X Ray ◽  
Transmission Electron

The purpose of this paper is to outline an approach to routine determination of x-ray detector efficiencies over the entire applicable energy range that may be used on any transmission electron microscope.BACKGROUNDThe quantification of x-ray intensities using the ratio technique can be accomplished [see, for example, 1] using a relation of the form:Here, for element A, CA is the composition in the sample as a weight fraction, kA is the x-ray generation constant (see below) which contains only sample-dependent information, eA is the detector efficiency for characteristic x-rays which contains only detector-dependent information, and lA is the measured x-ray intensity in a characteristic line.

Determination of efficiency of an aged HPGe detector for gaseous sources by self absorption correction and point source methods

2017 ◽  
Vol 12 (07) ◽  
pp. T07006-T07006 ◽  
Author(s):  
R. Sarangapani ◽  
M.T. Jose ◽  
T.K. Srinivasan ◽  
B. Venkatraman
Keyword(s):  
Point Source ◽  
Hpge Detector ◽  
Absorption Correction

Development of a Technique for the Calibration of HPGe Detector to Estimate Radionuclides Present in Steel Samples

2013 ◽  
Vol 794 ◽  
pp. 766-770
Author(s):  
Sarbjit Singh ◽  
Amol Mhatre
Keyword(s):  
Point Source ◽  
Hpge Detector ◽  
Environmental Safety ◽  
Point Sources ◽  
Efficiency Calibration ◽  
Detector System ◽  
Steel Disk ◽  
System A ◽  
Disk Sample

The quantitative assay of radionuclides present in steel samples is required for the environmental safety as well as in the process control and quality control of the finished products. The standard sources should also be prepared in the required size and shape as that of the sample, for the efficiency calibration of the HPGe detector system. A method was developed and tested to use 152Eu point source for the determination of efficiency of an extended steel disk source using HPGe detector system. Standard point sources of 152Eu were prepared by transferring known amount of 152Eu activity by weight. Standard steel disk sources of required dimensions were also prepared by distributing uniformly the standard activity of 152Eu on both sides of the inactive steel disk. The extrapolated efficiency of the steel disk sample was determined using the efficiency of the 152Eu point source and it was compared with the efficiency determined using the standard sources of 152Eu prepared on the steel disks. The two efficiency calibration curves matched very well within the experimental limits. Using this efficiency calibration, a few steel samples were analyzed for the radionuclides present in them. The detections limits for most of the nuclides were much less than the specified limits. The method can further be extended for other types of geometries with suitable modifications for the changes in thickness and attenuation corrections.

Experimental and Monte Carlo determination of HPGe detector efficiency

2019 ◽  
Vol 322 (3) ◽  
pp. 1863-1869 ◽  
Author(s):  
Miroslav Ješkovský ◽  
Andrej Javorník ◽  
Róbert Breier ◽  
Jarmila Slučiak ◽  
Pavel P. Povinec
Keyword(s):  
Monte Carlo ◽  
Hpge Detector ◽  
Detector Efficiency
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