scholarly journals Modal analysis of HPGe detector assembly in gamma-ray spectrometers

2017 ◽  
Vol 16 ◽  
pp. 61-66 ◽  
Author(s):  
Oļegs Jakovļevs ◽  
Vladislav Malgin ◽  
Jānis Vība
Keyword(s):  
Modal Analysis ◽  
Hpge Detector ◽  
Gamma Ray ◽  
Detector Assembly

Neutron, proton and gamma-ray event identification with a HPGe detector through pulse shape analysis

1991 ◽  
Vol 38 (2) ◽  
pp. 200-208 ◽  
Author(s):  
G.J. Bamford ◽  
A.C. Rester ◽  
R.L. Coldwell ◽  
C.M. Castaneda
Keyword(s):  
Shape Analysis ◽  
Hpge Detector ◽  
Pulse Shape ◽  
Gamma Ray ◽  
Pulse Shape Analysis ◽  
Event Identification

Using a clinical linac to determine the energies of gamma-ray transitions and half-lives of barium nuclei

2020 ◽  
Vol 35 (10) ◽  
pp. 2050062
Author(s):  
Abdullah Engin Çalık ◽  
Kaan Manisa ◽  
Ahmet Biçer ◽  
Mehmet Erdoğan ◽  
Mürsel Şen ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Linear Accelerator ◽  
Nuclear Physics ◽  
Hpge Detector ◽  
Gamma Ray ◽  
Energy Levels ◽  
Photonuclear Reactions ◽  
High Purity Germanium ◽  
Physics Experiment ◽  
First Time

Photonuclear reactions have great importance in understanding the structure of the nuclei. These reactions, performed using the gamma rays obtained by way of bremsstrahlung, are a standard nuclear physics experiment. In this study, a non-enriched barium sample was activated for the first time by using a clinical linear accelerator (cLINACs). The spectrum of barium radioisotopes was obtained by using a gamma spectrometry with a high purity germanium (HPGe) detector. The obtained spectroscopic data were analyzed and energy levels and half-life values together with their uncertainties were obtained. Some energy levels and half-lives of [Formula: see text]Ba were determined with more precision than those of literature values.

scholarly journals Design and Performance of the X-ray Polarimeter X-Calibur

2014 ◽  
Vol 03 (02) ◽  
pp. 1440008 ◽  
Author(s):  
M. Beilicke ◽  
F. Kislat ◽  
A. Zajczyk ◽  
Q. Guo ◽  
R. Endsley ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Detection Efficiency ◽  
Grazing Incidence ◽  
High Energy ◽  
X Rays ◽  
Field Orientation ◽  
Synchrotron Source ◽  
X Ray ◽  
And Performance ◽  
Detector Assembly

X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as binary black hole systems, micro-quasars, active galactic nuclei, neutron stars, and gamma-ray bursts. We designed, built and tested a X-ray polarimeter, X-Calibur, to be used in the focal plane of the balloon-borne InFOCμS grazing incidence X-ray telescope. X-Calibur combines a low-Z scatterer with a Cadmium Zinc Telluride (CZT) detector assembly to measure the polarization of 20–80 keV X-rays making use of the fact that polarized photons scatter preferentially perpendicular to the electric field orientation. X-Calibur achieves a high detection efficiency of ≃80%. The X-Calibur detector assembly is completed, tested, and fully calibrated. The response to a polarized X-ray beam was measured successfully at the Cornell High Energy Synchrotron Source. This paper describes the design, calibration and performance of the X-Calibur polarimeter. In principle, a similar space-borne scattering polarimeter could operate over the broader 2–100 keV energy band.

Modeling an HPGe detector response to gamma-rays using MCNP5 code

2019 ◽  
Vol 30 (11) ◽  
pp. 1950099
Author(s):  
I. V. Prozorova ◽  
R. R. Sabitova ◽  
N. Ghal-Eh ◽  
S. V. Bedenko
Keyword(s):  
Computational Model ◽  
Response Function ◽  
Hpge Detector ◽  
Gamma Ray ◽  
Detection Efficiency ◽  
Dead Layer ◽  
Acquisition Time ◽  
Detector Response ◽  
Simulated Model ◽  
Mcnp5 Code

The response function is the important information for the precise interpretation of experimental data and also for characterizing the developing nuclear instruments. Measurement of the response function normally requires a number of mono-energetic gamma-ray sources, a long acquisition time and an appropriate experimental setup. The Monte Carlo method, as an alternative to response function measurement, has widely been used and recommended. In this study, a computational model of an HPGe detector has been developed by using the MCNP5 code. To validate the simulated model, the simulations from mono-energetic sources have been compared to the corresponding measured data. Any deviation from the measurement could be attributed to the unmodeled details of the detector crystal, so they needed adjustment. Moreover, an analysis has been undertaken on the dependency of detection efficiency on the dead layer thickness of the germanium crystal. Having developed a computational model of the crystal, a set of correction factors was extracted to take into account the gamma-ray self-absorption within the source volume. The simulated model of the HPGe detector in this study can be used to calculate the detection efficiency when the samples are not of the standard geometry which require self-absorption considerations.

scholarly journals Measurement of Environmental Gamma Dose at AECD Campus of Bangladesh

2014 ◽  
Vol 6 (2) ◽  
pp. 285-291 ◽  
Author(s):  
M. S. Rahman ◽  
M. A. Islam ◽  
A. Begum ◽  
M. M. Rahman ◽  
M. H. Ahsan
Keyword(s):  
Dose Rate ◽  
Global Positioning System ◽  
Hpge Detector ◽  
Gamma Ray ◽  
Gamma Dose ◽  
Positioning System ◽  
Gps Navigation ◽  
Global Positioning ◽  
Measured Dose

A portable HPGe detector has been employed to assess environmental gamma-ray dose following in-situ technique from the primordial radionuclide 40K in the soil at 15 monitoring points (MPs) in the environment at the Atomic Energy Centre, Dhaka (AECD) campus, Bangladesh. The MPs were marked-out using Global Positioning System (GPS) navigation. The measured dose rate due to 40K range from 0.0428 µGy.h-1 to 0.1222 µGy.h-1 with an average of 0.0828 ± 0.0225 µGy.h-1. Keywords: Gamma; Environment; Dose rate.© 2014 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi: http://dx.doi.org/10.3329/jsr.v6i2.17146 J. Sci. Res. 6 (2), 285-291 (2014)  

Ultra Compact, Hand-Held HPGe Detector Assembly for Field Use

2006 ◽  
Author(s):  
V. Gostilo ◽  
A. Sokolov ◽  
A. Pchelintsev ◽  
A. Loupilov ◽  
R. Arlt ◽  
...  
Keyword(s):  
Hpge Detector ◽  
Detector Assembly
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