A NEW GAMMA TRANSITION FOLLOWING THE DECAY OF 2.4-MINUTE 108AG

1964 ◽  
Vol 42 (11) ◽  
pp. 2173-2179 ◽  
Author(s):  
H. W. Taylor ◽  
T. A. Eastwood
Keyword(s):  
Decay Time ◽  
Gamma Ray ◽  
Gamma Transition ◽  
Full Energy Peak ◽  
Full Energy ◽  
Low Intensity ◽  
Energy Peak ◽  
Gamma Coincidence

A low-intensity peak has been found at 1010 ± 30 keV in the gamma-ray spectrum of 2.4-minute 108Ag obtained with NaI scintillation spectrometers. Consideration of the source-to-crystal distance as well as the effects of absorbers and decay time shows that it is the full-energy peak of a 1010 ± 30 keV gamma ray emitted by 108Ag. Gamma–gamma coincidence studies indicate that this gamma transition occurs between a new level at 1433 ± 30 and the 433-keV level of 108Pd.

scholarly journals Progress in radionuclide characterisation in marine sediments using an underwater gamma-ray spectrometer in 2π geometry

2019 ◽  
Vol 21 ◽  
pp. 29
Author(s):  
E. G. Androulakaki ◽  
C. Tsabaris ◽  
M. Kokkoris ◽  
G. Eleftheriou ◽  
D. L. Patiris ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Detection System ◽  
Full Energy Peak ◽  
Gamma Ray Spectrometry ◽  
Peak Efficiency ◽  
Full Energy ◽  
Effective Manner ◽  
Energy Peak ◽  
Full Energy Peak Efficiency

The in-situ gamma-ray spectrometry is a well suited method for seabed mapping applications, since it provides rapid results in a cost effective manner. Moreover, the in-situ method is preferable to the commonly applied laboratory measurements, due to its beneficial characteristics. Therefore, the development of in-situ systems for seabed measurements continuously grows. However, an efficiency calibration of the detection system is necessary for obtaining quantitative results in the full spectral range. In the present work, an approach for calculating the full-energy peak efficiency of an underwater insitu spectrometer for measure- ments on the seabed is presented. The experimental work was performed at the coastal site of Vasilikos (Cyprus). The experimental full-energy peak efficiency of the in-situ was determined in the energy range 1400–2600 keV, by combining the in-situ and laboratory reference measurements. The experimental effi- ciency results were theoretically reproduced by means of Monte Carlo (MC) simulations, using the MCNP5 code.

Full-energy peak efficiency of cadmium-telluride gamma-ray spectrometers

1974 ◽  
Vol 115 (1) ◽  
pp. 13-21 ◽  
Author(s):  
P. Siffert ◽  
J.P. Gonidec ◽  
A. Cornet ◽  
R.O. Bell ◽  
F.V. Wald
Keyword(s):  
Cadmium Telluride ◽  
Gamma Ray ◽  
Full Energy Peak ◽  
Peak Efficiency ◽  
Full Energy ◽  
Energy Peak ◽  
Full Energy Peak Efficiency

scholarly journals Full Energy Peak Efficiency Calibration and Efficiency Transfer to ETNA in Gamma-ray Spectrometry

2014 ◽  
Vol 6 (3) ◽  
pp. 27-33
Author(s):  
Subrata Banik ◽  
◽  
Saudia Jannat ◽  
Satyajit Ghose ◽  
M Islam ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Full Energy Peak ◽  
Efficiency Calibration ◽  
Gamma Ray Spectrometry ◽  
Peak Efficiency ◽  
Full Energy ◽  
Energy Peak ◽  
Full Energy Peak Efficiency

scholarly journals Full-energy peak efficiency and response function of 1 cm3 CdZnTe detectors

2019 ◽  
Vol 15 (4) ◽  
pp. 580-584 ◽  
Author(s):  
Suffian Mohamad Tajudin ◽  
Yoshihito Namito ◽  
Toshiya Sanami ◽  
Hideo Hirayama
Keyword(s):  
Response Function ◽  
Gamma Ray ◽  
Region Of Interest ◽  
Effective Area ◽  
Full Energy Peak ◽  
Wide Energy Range ◽  
Full Energy ◽  
Energy Peak ◽  
Experimental Values ◽  
Cdznte Detectors

The energy dependence of the full-energy peak (FEP) efficiency and response function of 1 cm3 CdZnTe detectors that use gamma rays were investigated in the present study. Specifically, full-energy peaks from 60 keV to 1.3 MeV were evaluated. 214Am, 133Ba, 137Cs, 54Mn, and 60Co radionuclides with good source activities were employed. The results showed that the absolute peak efficiencies decreased at higher energies, and the calculated (EGS5 code) efficiencies were nearly 70% greater than the experimental values when above 100 keV photon. Below 100 keV, disagreement is within 35%. The measured and calculated peak efficiencies peak agreed within 5% in a wide energy range when the “effective” of the crystal area was down to 0.8 x 0.8 cm2. Agreement corresponding to response function curve at the region of interest (full-energy peak) and Compton plateau region for 137Cs achieved once considering the 0.8 x 0.8 cm2 effective area of the crystal and the source plastic casing. The results of the present study provided important insights on the calibration of the FEP efficiency as a function of the gamma ray energy. The detectors must be individually calibrated to obtain reliable results.

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