scholarly journals The STACEE ground-based gamma-ray detector

2005 ◽  
Author(s):  
D.M. Gingrich ◽  
L.M. Boone ◽  
D. Bramel ◽  
J. Carson ◽  
C.E. Covault ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Detector

scholarly journals Soft gamma-ray detector for the ASTRO-H Mission

2012 ◽  
Author(s):  
Shin Watanabe ◽  
Hiroyasu Tajima ◽  
Yasushi Fukazawa ◽  
Roger Blandford ◽  
Teruaki Enoto ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Detector

Bayesian deconvolution of gamma‐ray logs

Geophysics ◽  
1987 ◽  
Vol 52 (11) ◽  
pp. 1535-1546 ◽  
Author(s):  
Ping Sheng ◽  
Benjamin White ◽  
Balan Nair ◽  
Sandra Kerford
Keyword(s):  
High Frequency ◽  
Gamma Ray ◽  
Simulated Data ◽  
Field Measurements ◽  
Bayesian Optimization ◽  
Frequency Noise ◽  
High Frequency Noise ◽  
Data Application ◽  
Gamma Ray Detector ◽  
Gamma Ray Log

The spatial resolution of gamma‐ray logs is defined by the length 𝓁 of the gamma‐ray detector. To resolve thin beds whose thickness is less than 𝓁, it is generally desirable to deconvolve the data to reduce the averaging effect of the detector. However, inherent in the deconvolution operation is an amplification of high‐frequency noise, which can be a detriment to the intended goal of increased resolution. We propose a Bayesian statistical approach to gamma‐ray log deconvolution which is based on optimization of a probability function which takes into account the statistics of gamma‐ray log measurements as well as the empirical information derived from the data. Application of this method to simulated data and to field measurements shows that it is effective in suppressing high‐frequency noise encountered in the deconvolution of gamma‐ray logs. In particular, a comparison with the least‐squares deconvolution approach indicates that the incorporation of physical and statistical information in the Bayesian optimization process results in optimal filtering of the deconvolved results.

scholarly journals First data with the Hybrid Array of Gamma Ray Detector (HAGRiD)

2018 ◽  
Vol 414 ◽  
pp. 190-194 ◽  
Author(s):  
K. Smith ◽  
T. Baugher ◽  
S. Burcher ◽  
A.B. Carter ◽  
J.A. Cizewski ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Detector

Development of Large-Area CdTe/n+-Si Epitaxial Layer-Based Heterojunction Diode-Type Gamma-Ray Detector Arrays

2018 ◽  
Vol 65 (4) ◽  
pp. 1066-1069 ◽  
Author(s):  
M. Niraula ◽  
K. Yasuda ◽  
M. Kojima ◽  
S. Kitagawa ◽  
S. Tsubota ◽  
...  
Keyword(s):  
Epitaxial Layer ◽  
Gamma Ray ◽  
Heterojunction Diode ◽  
Large Area ◽  
Detector Arrays ◽  
Gamma Ray Detector

scholarly journals Improving the performance of 241Am-Be for PGNAA applications using a proper shielding for neutron source and the NaI detector

2010 ◽  
Vol 25 (3) ◽  
pp. 205-211 ◽  
Author(s):  
Hamed Panjeh ◽  
Hashem Hakimabad ◽  
Lalle Motavalli
Keyword(s):  
Gamma Rays ◽  
Energy Region ◽  
Gamma Ray ◽  
Region Of Interest ◽  
High Rate ◽  
Prompt Gamma ◽  
Peak Resolution ◽  
Set Up ◽  
Gamma Ray Detector

The gamma ray spectrum resolution from a 241Am-Be source-based prompt gamma ray activation analysis set-up has been observed to increase in the energy region of interest with enclosing the NaI detector in a proper neutron and gamma ray shield. We have investigated the tact that the peak resolution of prompt gamma rays in the region of interest from the set-up depends on the source activity to the great extent, size and kind of the detector and the geometry of the detector shield. In order to see the role of a detector shield, five kinds of the detector shield were used and finally the proper kind was introduced. Since the detector shield has an important contribution in the reduction of the undesirable and high rate gamma rays coming to the gamma ray detector, a good design of a proper shield enables the elimination of the unwanted events, such as a pulse pile-up. By improving the shielding design, discrete and distinguishable photoelectric peaks in the energy region of interest have been observed in the spectrum of prompt gamma rays.

scholarly journals Solar Neutron and Gamma-ray Detector for a 3U CubeSat

2019 ◽  
Author(s):  
Kazutaka Yamaoka ◽  
Hiroyasu Tajima ◽  
Kikuko Miyata ◽  
Takaya Inamori ◽  
Yoshinori Sasai ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Solar Neutron ◽  
Gamma Ray Detector

scholarly journals The Crystal Eye X and gamma ray detector for space missions

2021 ◽  
Author(s):  
Felicia Barbato ◽  
Andrea Abba ◽  
Antonio Anastasio ◽  
GianCarlo Barbarino ◽  
Alfonso Boiano ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Space Missions ◽  
Gamma Ray Detector
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