Determination of uranium, thorium and potassium contents in rock and soil samples using low‐energy gamma ray spectrometry

Terra Nova ◽  
1995 ◽  
Vol 7 (3) ◽  
pp. 321-326 ◽  
Author(s):  
A. Subjender Reddy ◽  
N. Venkat Rao
Keyword(s):  
Gamma Ray ◽  
Soil Samples ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Energy Gamma ◽  
Rock And Soil

scholarly journals Determination of the activity concentration levels of the artificial radionuclide137Cs in soil samples collected from Qatar using high-resolution gamma-ray spectrometry

2016 ◽  
Vol 44 ◽  
pp. 1660237
Author(s):  
Huda Al-Sulaiti ◽  
Tabassum Nasir ◽  
K. S. Al Mugren ◽  
N. Alkhomashi ◽  
N. Al-Dahan ◽  
...  
Keyword(s):  
High Resolution ◽  
Nuclear Power ◽  
Activity Concentration ◽  
Gamma Ray ◽  
Germanium Detector ◽  
Soil Samples ◽  
Gamma Ray Spectrometry ◽  
Activity Concentrations ◽  
High Resolution Gamma

The goal of this study was to establish the first baseline measurements for radioactivity concentration of the artificial radionuclide [Formula: see text]Cs in soil samples collected from the Qatarian peninsula. The work focused on the determination of the activity concentrations levels of man-made radiation in 129 soil samples collected across the landscape of the State of Qatar. All the samples were collected before the most recent accident in Japan, “the 2011 Fukushima Dai-ichi nuclear power plant accident”. The activity concentrations have been measured via high-resolution gamma-ray spectrometry using a hyper-pure germanium detector situated in a low-background environment with a copper inner-plated passive lead shield. A radiological map showing the activity concentrations of [Formula: see text]Cs is presented in this work. The concentration was[Formula: see text]found to range from 0.21 to 15.41 Bq/kg. The highest activity concentration of [Formula: see text]Cs was observed in sample no. 26 in North of Qatar. The mean value was found to be around 2.15 ± 0.27 Bq/kg. These values lie within the expected range relative to the countries in the region. It is expected that this contamination is mainly due to the Chernobyl accident on 26 April 1986, but this conclusion cannot be confirmed because of the lack of data before this accident.

Non destructive and destructive dating by low energy gamma ray spectrometry

1995 ◽  
Vol 46 (6-7) ◽  
pp. 651-652
Author(s):  
M. Berrada ◽  
A. Choukri ◽  
T. El Khoukhi
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Energy Gamma ◽  
Non Destructive

Study of scattering effects in low-energy gamma-ray spectrometry

2008 ◽  
Vol 66 (6-7) ◽  
pp. 769-773 ◽  
Author(s):  
J. Plagnard ◽  
C. Hamon ◽  
M.C. Lépy
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Scattering Effects ◽  
Energy Gamma

scholarly journals Gamma-Ray Spectrometry of Galactic Sources in the Energy Range 0.2–3.0 MeV

1971 ◽  
Vol 41 ◽  
pp. 45-57 ◽  
Author(s):  
A Bui-Van ◽  
G. Vedrenne ◽  
P. Mandrou
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Signal To Noise Ratio ◽  
Crab Nebula ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Angular Aperture ◽  
Energy Gamma ◽  
Galactic Sources ◽  
The Crab Nebula

A low energy gamma-ray telescope (0.2–3 MeV) has been studied in our laboratory. It is made up of an active honeycomb collimator of Nai(T1), with a geometrical angular aperture of 1.5°, and of a detector composed of 73 Nai(T1) sticks (0.5 cm diam.–5 cm length) incorporated in a plastic gabarit used in anticoincidence.The directivity of the telescope is obtained at low energy by the collimator, and at higher energy by the directivity which exists in the gamma-ray interaction through the Compton and photoelectric effects. The electrons emitted in these interactions which are not contained in the sticks of Nai(T1) are detected by the plastic anticoincidence scintillator. Only laboratory tests are presented here, for the study of the galactic gamma-rays, however, the system must subsequently be protected by a 4 cm thick anticoincidence well. In fact the detector directivity enables a great increase in the signal to noise ratio to be expected without greatly increasing the thickness of the shielding.According to the results obtained the estimation of the minimum exposure time for the ‘Crab Nebula’ would be about 2h30m to have a signal at 1 MeV with 2σ of confidence above the background.

C-SPRINT: a prototype Compton camera system for low energy gamma ray imaging

2002 ◽  
Author(s):  
J.W. LeBlanc ◽  
N.H. Clinthorne ◽  
C.-H. Hua ◽  
E. Nygard ◽  
W.L. Rogers ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Compton Camera ◽  
Camera System ◽  
Gamma Ray Imaging ◽  
Energy Gamma
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