SOFTWARE AT MOBILE SPECTROMETER WITH CZT-DETECTOR

The technology is based on a semiconductor CdZnTe-portable (almost the size of a mobile phone) gamma-ray spectrometer with high resolution, which provides high efficiency of rapid identification of radionuclides and assessment of radiation dose from low to moderately high levels. The CdZnTe gamma-ray spectrometer is a highly efficient device based on the use of CdZnTe (CZT) semiconductor detectors operating at room temperature with very low power consumption, a digital multichannel analyzer, and a microcomputer. CdZnTe-portable spectrometer is a self-contained device and consists of three modules - a detector module, a multichannel analyzer, and a microcomputer. The detector module contains a high-quality CdZnTe detector, a preamplifier, and a high voltage power supply for the detector. There are detector modules with different volumes of the CZT detector from 5 mm3 to 1600 mm3. It is possible to use a multi-detector system. The analyzer module contains an amplifier, a digital signal processor, a low voltage power supply, and a computer interface. The microcomputer software interacts with the multichannel analyzer, analyzes gamma spectra, and provides the accumulation of time profiles of the dose of gamma radiation, communication with other information systems. Spectrometric measurements in real-time make it possible to use "electronic collimation" technologies to build a map of the radiation field and localize sources of ionizing radiation, with the subsequent certification of identified sources, creation of an effective radiation monitoring system with the functions of certification of ionizing sources radiation. The corresponding software allows you to solve the following tasks – building a three-dimensional map of the fields of ionizing radiation of various degrees of spatial detailing, taking into account the radiation energy, localization, and certification of gamma radiation sources. The special laboratory kit is based on μSPEC microspectrometers. A LattePanda single board computer is used to control the operation of spectrometers, collect and analyze data. LattePanda – A Windows 10 Computer with integrated Arduino. This explains the choice of LattePanda. Windows 10 application allows you to use the WinSPEC software to control the multichannel analyzer operation supplied with the spectrometer. The built-in Arduino allows you to remote control the movement of the radiation source during laboratory experiment. Both the traditional problems of calibrating spectrometers (energy calibration and efficiency curves), including those for various source geometries, processing the measured spectra using standard programs, calculating the activity of sources, and the problem of creating a spectra processing program and a spectrometer control program are considered. The values of the minimum detectable activity are given.

Download Full-text

Testing for presence of radioactivity in BC Pacific Ocean’s seafood supply

BCIT Environmental Public Health Journal ◽

10.47339/ephj.2014.164 ◽

2014 ◽

Author(s):

Amy Luan ◽

BCIT School of Health Sciences, Environmental Health ◽

Bobby Sidhu ◽

Abderrachid Zitouni

Keyword(s):

Pacific Ocean ◽

Gamma Radiation ◽

Nuclear Power ◽

Gamma Ray ◽

Gamma Ray Spectrometer ◽

The Pacific ◽

Two Samples ◽

Seafood Products ◽

The Pacific Ocean ◽

Fish And Shellfish

Abstract: Due to the Fukushima Daiichi Nuclear power plant incident in March 2011, large quantities of contaminated water were released to the Pacific Ocean in Japan. The severity of contamination on the marine environment is unclear, therefore, the public is concerned with the possible internal radiation exposure from ingesting contaminated seafood products caught in the Pacific Ocean. This study was aimed to investigate the presence or absence of gamma radioactivity in commonly consumed seafood products from B.C. In total, ten different species of fish and three different species of shellfish were selected for analysis. For each species of fish, two samples were collected and each sample was from a different local seafood market. For each species of shellfish, ten samples were collected from three different sources. Using the portable GR-135 Plus gamma ray spectrometer, the samples were tested and analyzed for the presence of Fukushima radionuclides, particularly Cesium-137 (Cs-137) and Cesium- 134 (Cs-134).Based on the analyzed fish and shellfish, no gamma radiation was detected. The detector did not identify any gamma radiation over the normal background readings.

Download Full-text

High-voltage power supply with improved thermostability for Xenon gamma-ray spectrometer

Journal of Physics Conference Series ◽

10.1088/1742-6596/675/4/042038 ◽

2016 ◽

Vol 675 (4) ◽

pp. 042038

Author(s):

D Petrenko ◽

Z Uteshev ◽

A Novikov ◽

A Shustov ◽

K Vlasik ◽

...

Keyword(s):

High Voltage ◽

Power Supply ◽

Gamma Ray ◽

High Voltage Power Supply ◽

Gamma Ray Spectrometer

Download Full-text

Generation of secondary radiation on the surface of endoprostheses used for breast reconstruction during mastectomy, after radiation therapy

Pacific Medical Journal ◽

10.34215/1609-1175-2020-4-59-62 ◽

2020 ◽

pp. 59-62

Author(s):

I. S. Gulian ◽

N. O. Nikiforova ◽

V. N. Kustov ◽

V. V. Temchenko ◽

A. S. Mandryko ◽

...

Keyword(s):

Radiation Therapy ◽

Ionizing Radiation ◽

Energy Level ◽

Breast Reconstruction ◽

Gamma Ray ◽

Tissue Expander ◽

Secondary Radiation ◽

Special Equipment ◽

Gamma Ray Spectrometer ◽

Capsular Contractures

Objective: Experimental estimate of the secondary radiation on the surface of implants and expanders, used for breast reconstruction in case of mastectomy, after making radiation therapy.Methods: Special equipment was constructed by radiation study department. It consists of linear accelerator as a source of ionizing radiation and a gamma-ray spectrometer with the detector on the basis of ultrapure germanium. The objects of research were the implants and expanders of the different producers.Results: The maximum amount of the secondary photons on the implants and expanders was generated on the energy level lower than 700 KEV. The level of photons’ generation between 600–300 KEV was higher on the surface of the implants than on the surface of expander filled with saline.Conclusion: The photons of the secondary radiation with the energy level from 100 to 700 KEV are generated under the influence of ionizing radiation on the implants and tissue expander filled with saline. It can be one of the causes of capsular contractures development after mastectomy.

Download Full-text

Assessment of background gamma radiation levels using airborne gamma ray spectrometer data over uranium deposits, Cuddapah Basin, India – A comparative study of dose rates estimated by AGRS and PGRS

Journal of Environmental Radioactivity ◽

10.1016/j.jenvrad.2016.11.027 ◽

2017 ◽

Vol 167 ◽

pp. 1-12 ◽

Cited By ~ 2

Author(s):

D. Srinivas ◽

V. Ramesh Babu ◽

I. Patra ◽

Shailesh Tripathi ◽

M.S. Ramayya ◽

...

Keyword(s):

Comparative Study ◽

Gamma Radiation ◽

Gamma Ray ◽

Cuddapah Basin ◽

Uranium Deposits ◽

Dose Rates ◽

Gamma Ray Spectrometer ◽

Background Gamma Radiation ◽

Spectrometer Data

Download Full-text

Thermoluminescence Characteristics of Aluminium Oxide Doped Carbon Exposed to Cobalt-60 Gamma Radiation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1107.553 ◽

2015 ◽

Vol 1107 ◽

pp. 553-558

Author(s):

Nurul Syazlin Saharin ◽

Husin Wagiran ◽

Abdul Rahman Tamuri

Keyword(s):

Ionizing Radiation ◽

Aluminum Oxide ◽

Gamma Radiation ◽

Gamma Irradiation ◽

Linear Relationship ◽

Glow Curve ◽

Gamma Ray ◽

Carbon Doped ◽

The Right ◽

Delivered Dose

This study concerns on the thermoluminescence (TL) characteristics of carbon doped aluminum oxide (Al2O3:C) as ionizing radiation dosimeter. The thermoluminescence response, linearity and sensitivity subjected to Co-60 gamma irradiation were investigated. Carbon doped (0.2 mol %) aluminum oxide samples in form of powder were irradiated to 1.25 MeV Co-60 gamma ray with doses ranging from 1 Gy to 50 Gy. Irradiations were performed by using Co-60 gamma ray model 220 Excel with the source activity, A = 2.310925534 kGy h1at Universiti Kebangsaan Malaysia. The glow curves were analysed to determine various characterizations of the TLDs. It is shown that the glow curve of the sample contains a single peak at about 180°C with broad peak appears at the right of the spectrum. It is also shown that the TL intensity has linear relationship with delivered dose and the average TL sensitivity was calculated as 3.30 nC mg-1Gy-1.

Download Full-text

MOBILE COLLIMATED GAMMA-RAY SPECTROMETER

Telecommunications and Radio Engineering ◽

10.1615/telecomradeng.v74.i1.80 ◽

2015 ◽

Vol 74 (1) ◽

pp. 87-93

Author(s):

N.A. Kochnev

Keyword(s):

Gamma Ray ◽

Gamma Ray Spectrometer

Download Full-text

Effect of Gamma Radiation on Structural, Optical and Electrical Properties of nanostructured CdHgTe Thin Films

Nanoscale Reports ◽

10.26524/nr1815 ◽

2018 ◽

Vol 1 (1) ◽

pp. 26-31 ◽

Cited By ~ 1

Author(s):

B Babu ◽

K Mohanraj ◽

S Chandrasekar ◽

N Senthil Kumar ◽

B Mohanbabu

Keyword(s):

Thin Films ◽

Electrical Conductivity ◽

Electrical Properties ◽

Gamma Radiation ◽

Glass Substrate ◽

Gamma Ray ◽

Optical And Electrical Properties ◽

Deposition Technique ◽

Polycrystalline Structure ◽

Dc Electrical Conductivity

CdHgTe thin films were grown onto glass substrate via the Chemical bath deposition technique. XRD results indicate that a CdHgTe formed with a cubic polycrystalline structure. The crystallinity of CdHgTe thin films is gradually deteriorate with increasing the gamma irradiation. EDS spectrums confirms the presence of Cd, Hg and Te elements. DC electrical conductivity results depicted the conductivity of CdHgTe increase with increasing a gamma ray dosage

Download Full-text

Design and construction of a gamma-ray spectrometer system for determining natural radioelement concentrations in geological samples at the U.S. Geological Survey in Reston, Virginia

Open-File Report ◽

10.3133/ofr0329 ◽

2003 ◽

Cited By ~ 7

Author(s):

Stephen L. Snyder ◽

Joseph S. Duval

Keyword(s):

Gamma Ray ◽

Geological Survey ◽

Geological Samples ◽

Gamma Ray Spectrometer ◽

Spectrometer System ◽

Natural Radioelement ◽

The U.S ◽

Design And Construction

Download Full-text

Elemental analysis of medicinal plants from different sites by instrumental neutron activation analysis

International Journal of Bioassays ◽

10.21746/ijbio.2016.03.0010 ◽

2016 ◽

Vol 5 (03) ◽

pp. 4892 ◽

Cited By ~ 2

Author(s):

Ratna Raju M.* ◽

Madhusudhana Rao P. V. ◽

Seshi Reddy T. ◽

Raju M. K. ◽

Brahmaji Rao J. S. ◽

...

Keyword(s):

Neutron Activation Analysis ◽

Instrumental Neutron Activation Analysis ◽

Activation Analysis ◽

Medicinal Plants ◽

Neutron Activation ◽

Gamma Ray ◽

Elemental Content ◽

Soil Composition ◽

Gamma Ray Spectrometer ◽

Instrumental Neutron Activation

A study was undertaken to evaluate the inorganic elements for humans in two Indian medicinal plants leaves, namely Sphaeranthus indicus, and Cassia fistula by Instrumental Neutron Activation Analysis (INAA). INAA experiment was performed by using 20 kW KAMINI Reactor at Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam. The emitted gamma rays were measured using gamma ray spectrometer. The concentrations of Al, Br, Ca, Fe, K, La, Mg, Mn, Na, Sc, V and Zn were determined in the selected medicinal plants. The medicinal leaves are using in treatment of various important ailments. The elemental content in selected medicinal leaves is various proportions depending on the soil composition, location of plant specimen and the climate in which the plant grows.

Download Full-text