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Tytuł:
The Mössbauer spectrometer MsAa-4
Autorzy:
Górnicki, R.
Ruebenbauer, K.
Powiązania:
https://bibliotekanauki.pl/articles/147400.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
gamma-ray spectroscopy
Mössbauer spectroscopy
spectrometers
Opis:
A description of the Mossbauer spectrometer MsAa-4 is given. The spectrometer has a modular design and it could be used as the gamma-ray spectrometer as well. It has almost entirely digital design to assure stability and repeatability. It is powered via the rechargeable battery to make it immune to the power failures. All settings are performed remotely over the Ethernet link used also to transfer data and spectrometer functions. External CAN bus could be used to attach auxiliary equipment. The status of the external equipment could be used to control spectrometer functions. Internal digital oscilloscope monitors vital functions of the spectrometer over the Ethernet link. Driving software operates under Microsoft Windows registered trademark systems and it is fully compatible with the Mosgraf-2009 data processing suite.
Źródło:
Nukleonika; 2013, 58, 1; 17-21
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of High-Energy Laser coupled with Gamma – Lonizing Irradiations as New Sterilizing Technique
Autorzy:
Elsabawy, Khaled M.
Powiązania:
https://bibliotekanauki.pl/articles/1192077.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Nd-Laser
Gamma-ray
Sterilizing
X-Ray
SEM
AFM
Opis:
The present investigations introduce for first time new trend of coupling of two sterilizing sources, high energy Nd-Laser and Gamma – irradiations which has oxidative nature by additional to its thermal effects. The investigated samples will be examined before and after radiations to confirm its internal structure (XRD, microstructure (SEM, AFM, Raman-Spectra) and killing ratio for polluted bacteria. Furthermore some selected biological tests will be checked to be sure from toxicity ratio after radiations. Also many of investigational parameters will be tested such as strength of irradiation dose and irradiation dosage time to achieve maximum healthy sterilizing ratio per minimum time to validate application and wide scale application of this promising sterilizing technique.
Źródło:
World Scientific News; 2016, 37; 61-75
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A modified method for the determination of radioactive isotopes in building raw and construction materials with multichannel gamma spectrometry
Autorzy:
Charewicz, W.
Żebrowski, A.
Walkowiak, W.
Borek, B.
Powiązania:
https://bibliotekanauki.pl/articles/147083.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
building materials
multichannel gamma-ray spectrometry
radioactive isotopes
Opis:
A modified method is presented for the determination of natural and artificial isotopes in building raws and materials using multichannel gamma-ray spectrometry. A procedure is given for the preparation of standards as well as for the determination of radioisotopes content in typical building raws and/or materials. Results of these determinations were compared with those from standard, tri-channel gamma spectrometry described in Instruction No. 234/95 [2] issued by the Institute of Building Technology in Warsaw, Poland.
Źródło:
Nukleonika; 2000, 45, 4; 243-247
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prompt gamma-ray methods for industrial process evaluation : a simulation study
Autorzy:
Mohammed, Mohammed Siddig H.
Alhawsawi, Abdulsalam M.
Aljohani, M. S.
Damoom, Mohammed M.
Banoqitah, Essam M.
Elmoujarkach, Ezzat
Powiązania:
https://bibliotekanauki.pl/articles/2105331.pdf
Data publikacji:
2022
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
prompt gamma ray
sealed sources
radiotracers
industrial process
Opis:
Radioisotope applications in industrial process inspection and evaluation using gamma-ray emitters provide otherwise unavailable information. Offering alternative gamma-ray sources can support the technology by complementing sources’ availability and radiation safety. This work proposes to replace gamma-ray from radioisotopes with prompt gamma-ray from the interaction of neutrons with stable isotopes injected into the industrial process or with the structural material of the industrial process equipment. Monte Carlo N-Particle Transport Code (MCNP5) was used to simulate the irradiation of two-phase fl ow pipes by 252Cf neutron source. Two simulations were run for each pipe, with and without mixing the liquid phase with the stable isotope 157Gd. The detected gamma-ray spectra were analysed, and images of the two phases inside the pipes were produced. The images were compared to images obtained from simulations of gamma transmission measurement using 60Co. Furthermore, results for prompt gamma computed tomography (CT) were presented and discussed. The studies’ outcomes indicate the potential of prompt gamma-ray to carry out the sealed sources applications of gamma transmission measurements and imaging.
Źródło:
Nukleonika; 2022, 67, 1; 11--18
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pochłanianie promieniowania gamma w taśmach przenośnikowych jako czynnik ograniczający stosowanie urządzeń izotopowych
Absorption of gamma ray in conveyor belts as a limiting factor of applying devices with radioactive sources
Autorzy:
Bonczyk, M.
Michalik, B.
Powiązania:
https://bibliotekanauki.pl/articles/164972.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:
taśmy przenośnikowe
absorpcja promieniowania gamma
conveyor belts
absorption of gamma ray
Opis:
Rozmaite metody izotopowe stosowane w systemach automatyki kontrolno-pomiarowej wykorzystywane są niemal we wszystkich gałęziach przemysłu, szczególnie w górnictwie i energetyce. Ich zaletą jest mnogość zastosowań oraz łatwość użycia, co jednocześnie rzutuje na ich dużą niezawodność. Wykorzystywane są miedzy innymi przy badaniu przepływów, poziomów cieczy w zbiornikach, w pomiarach gęstości i masy (tzw. wagi izotopowe) czy w systemach wykonujących ciągły pomiar zawartości popiołu w węglu (tzw. popiołomierze absorpcyjne). Idea badania gęstości, masy czy zawartości popiołu polega na pomiarze wielkości osłabienia wiązki promieniowania gamma przechodzącej przez badany obiekt. Dzięki zastosowaniu odpowiedniej kalibracji takiego systemu pomiarowego można uzyskać zależność funkcyjną między wielkością osłabienia a wymienionymi parametrami. Trudność tego typu badań polega na tym, że w typowym układzie pomiarowym, wiązka promieniowania gamma przechodzi nie tylko przez badany obiekt, ale również przez taśmę transportera, której obecność istotnie wpływa na wynik pomiaru. Dzieje się tak dlatego, że pewna część promieniowania zostaje pochłonięta już w taśmie. Praca traktuje o wpływie obecności taśm transporterowych na wyniki pomiarów urządzeniami wykorzystującymi źródła promieniotwórcze.
Industrial automation systems with radioactive sources are applied in almost all branches of industry, especially in the mining and energy ones. They are very easy to apply and strongly reliable. Radioactive sources are used in measuring the flow, levels of media in containers, density, mass and ash content in coal. These measurements relay on measurement of gamma- -ray absorption which is the matter of concern. After appropriate calibration of such a measurement system, one is able to obtain relationship between absorption of radiation and mass or ash content. The major difficulty is additional absorption in conveyor belts. This additional absorption in belts usually is non-negligible. The presented work describes the influence of additional absorption in conveyor belts on the results of measurements which are performed by use of the devices with radioactive sources.
Źródło:
Przegląd Górniczy; 2015, 71, 12; 36-40
0033-216X
Pojawia się w:
Przegląd Górniczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-absorption correction in gamma-ray spectrometry of environmental samples - an overview of methods and correction values obtained for the selected geometries
Autorzy:
Jodłowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/148531.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
gamma-ray spectrometry
self-attenuation
self-absorption
correction factor
Opis:
Of major concern are the self-absorption correction factors Cs in precise gamma-ray spectrometry of environmental samples. The overview of Cs determination methods (experimental, Monte Carlo calculations, analytical function application) is presented. Among several available methods, the author chose the one proposed by Debertin where the uncertainty level of Cs correction factor is 1÷2%. The point-like detector model is assumed whilst its efficiency is taken to be proportional to the weighted sum (integral) of the number of photons coming from sample volume elements. Computer program was developed to support the computation of Cs by the Debertin's method for samples in cylindrical geometries and Marinelli beakers. The input data are sample dimensions, density and the mass attenuation coefficient. The Cs uncertainty due to an arbitrarily chosen position of a point-like detector would not exceed 1% for the considered photon energies and the sample density range. Utilising this computer program, the relationships Cs(E,ń) were obtained for the applied geometries and a SiO2 matrix to support routine measurements. The SiO2 matrix is widely encountered in environmental spectrometry. This relationship was derived by fitting the computed data with the function Cs(E,ń) in the form proposed by Bolivar. It was shown that while handling this function to samples with the H2O matrix, the error involved in estimations would not exceed 3%.
Źródło:
Nukleonika; 2006, 51,suppl.2; 21-25
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi phase flow measurements with the application of ECT/ERT DECART multimodality tomograph
Pomiary przepływów wielofazowych z wykorzystaniem tomografu multimodalnego DECART
Autorzy:
Nowakowski, J.
Banasiak, R.
Wajman, R.
Sankowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/408319.pdf
Data publikacji:
2017
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
tomography
electrical capacitance tomography
gamma ray
tomografia
elektryczna tomografia pojemnościowa
promieniowanie gamma
Opis:
The multi-phase flow measurements are very important tasks in many areas of industrial processes applications. One of them is undersea exploration of oil in the petroleum industry. The submitted paper presents application of DECART tomograph designed and built in Lodz University of Technology - together with combined measurements of signals acquired from gamma ray measurement system. Use of all measuring modalities allowed for performing measurements of a flow composed of sea water, oil and gas. The paper presents theoretical principles applied to design multimodality tomograph and results of experiments performed in the University of Bergen. Measurement confirmed that multi-modality approach allows giving fast and reliable on-line results of measurements of composition of multi-phase flow. Applied algorithms allowed to speed up on-line measurements and presenting results in a form required in industrial applications. The derived conclusions can be used as guidelines for preparation of industrial applicable construction of tomograph.
Pomiary przepływów wielofazowych są szeroko wykorzystywane w wielu procesach przemysłowych. Jednym z nich jest przemysł petrochemiczny, w szczególności dziedzina eksploatacji podwodnych złóż ropy naftowej. W artykule zostało przedstawione zastosowanie tomografu DECART - zaprojektowanego i zbudowanego w Instytucie Informatyki Stosowanej Politechniki Łódzkiej. Pomiary z tomografu zostały powiązane z sygnałami uzyskanymi z systemu pomiaru promieniowania gamma. Wykorzystanie danych uzyskanych z różnych rodzajów czujników umożliwiło pomiar przepływu mieszaniny składającej się z wody morskiej, ropy naftowej i gazu. W pracy przedstawiono podstawy teoretyczne, które stanowiły punkt wyjścia do wykorzystania tomografu multimodalnego jak i wyniki eksperymentów przeprowadzonych na Uniwersytecie w Bergen. Pomiary potwierdziły, że podejście multimodalne umożliwia szybki i niezawodny pomiar udziału faz w przepływie wielofazowym. Zastosowane algorytmy pozwalają na przyspieszenie pomiarów on-line i przedstawienie wyników w formie wymaganej w zastosowaniach przemysłowych. Wnioski z badań mogą być wykorzystane jako wskazówki dla konstrukcji tomografu do praktycznych zastosowań przemysłowych.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2017, 7, 1; 46-49
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gamma-Ray Spectrometry Laboratory for high-precision measurements of radionuclide concentrations in environmental samples
Autorzy:
Jodłowski, P.
Kalita, S. J.
Powiązania:
https://bibliotekanauki.pl/articles/148485.pdf
Data publikacji:
2010
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
gamma-ray spectrometry
environmental samples
efficiency
self-absorption
coincidence summing
Opis:
The paper outlines the methodology used in the Gamma-Ray Spectrometry Laboratory for high-precision measurements of radionuclide activity concentrations in environmental samples. The Laboratory equipment includes a semiconductor detector HPGe with a 42% relative efficiency. The detector is placed in a Pb housing made of bricks 10 cm in thickness. Three measurement geometries are considered: Marinelli beakers 710 cm3 in volume and two cylindrical geometries 121 and 48 cm3 in volume. In the efficiency calibration (E = 32 division sign 1836 keV) mixed gamma standard solutions were used. Obtained experimental efficiency values epsilon were fitted with two quadratic functions. The junction point is that equivalent to 200 keV. Uncertainty of the calibration curve is 2% for E > 200 keV. The relationship between the total efficiency and the energy epsilon t(E) was also found for energies E = 33 division sign 1250 keV. Self-absorption correction factors Cs are calculated by the method proposed by K. Debertin, the uncertainty level being 1 division sign 2% for E > 100 keV. These correction factors are calculated by an original computer program. Coincidence summing correction factors Cc for the selected nuclides are derived using the ETNA computer program, basing on the relationships epsilon(E) and epsilon t(E). Minimum detectable activity (MDA) for selected nuclides encountered in environmental samples was determined for the water matrix. The methodology used was successfully verified in the course of international intercomparison measurements.
Źródło:
Nukleonika; 2010, 55, 2; 143-148
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bone powder as EPR dosimetry system for electron and gamma radiation
Autorzy:
Ziaie, F.
Hajiloo, N.
Fathollahi, H.
Mehtieva, S. I.
Powiązania:
https://bibliotekanauki.pl/articles/148156.pdf
Data publikacji:
2009
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
bone powder dosimeter
EPR response
dose rate
electron beam
gamma ray
Opis:
In this work bovine bone powder samples were irradiated at three different dose rates of 100, 260 and 630 kGy/min for the absorbed dose range of 3 to 110 kGy, using 10 MeV electron beam radiation. The samples were subjected to EPR measurement at room temperature in air. The variation of EPR signal intensities were constructed and evaluated base on quantitative data related to the absorbed doses. Moreover, they were compared with the obtained results from the samples irradiated by a 60Co gamma-ray source with a dose rate of 2.65 kGy/h. The time and temperature effects on the EPR response of this dosimeter were also studied. The results indicated that the bone sample was a suitable dosimeter especially for electron beam at high doses.
Źródło:
Nukleonika; 2009, 54, 4; 267-270
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of anthropogenic radionuclides in post-Fukushima Pacific seawater samples
Autorzy:
Lutter, G.
Tzika, F.
Hult, M.
Aoyama, M.
Hamajima, Y.
Marissens, G.
Stroh, H.
Powiązania:
https://bibliotekanauki.pl/articles/148313.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
detection limit
Fukushima
gamma-ray spectrometry
Monte Carlo
radiocesium
underground laboratory
Opis:
Following the accident at the Daiichi Fukushima nuclear power plant in 2011, a vast number of Pacific seawater samples from many locations far from Fukushima have been collected by Japanese investigators. Due to dilution, the activities of radionuclides from North Pacifi c seawater samples are very low, which calls for extraordinary measures when being measured. This study focuses on the metrological aspects of the gamma-ray spectrometry measurements performed on such samples in two underground laboratories; at HADES (by JRC- -IRMM in Belgium), and at Ogoya (by Kanazawa University in Japan). Due to many samples and long measurement times, all available HPGe detectors needed to be employed. In addition to single coaxial detectors, this involved multidetector systems and well detectors. Optimization of detection limits for different radionuclides and detectors was performed using Monte Carlo simulations.
Źródło:
Nukleonika; 2015, 60, No. 3, part 2; 545-550
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Large Sample Neutron Activation Analysis: correction for neutron and gamma attenuation
Autorzy:
Tzika, F.
Stamatelatos, I.
Kalef-Ezra, J.
Bode, P.
Powiązania:
https://bibliotekanauki.pl/articles/147265.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
neutron activation analysis
neutron self-shielding
gamma-ray attenuation
MCNP code
Opis:
A Large Sample Neutron Activation Analysis (LSNAA) facility is under development at the GRR-1 research reactor, NCSR "Demokritos". The LSNAA facility design incorporates sample irradiation in the reactor graphite thermal neutron column and subsequent measurement of the activity induced in a gamma spectroscopy system with gamma ray transmission measurement options included. The Monte Carlo neutron and photon transport code MCNP-4C was used to model the facility. Appropriate correction factors accounting for neutron field perturbation during sample irradiation and high-purity germanium detector efficiency for the volume source were derived. The results of the computations were experimentally verified by measurements for a set of known materials. The LSNAA facility will be used to perform multi-element, non-destructive, contamination-free analysis of large volume samples with high sensitivity and excellent sampling. End-users of the facility will be archaeological, environmental, bio-medical research laboratories and industry.
Źródło:
Nukleonika; 2004, 49, 3; 115-121
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of the Radiation Hazards Indices of Organic Fertilizers Using NaI(Tl) Gamma Spectrometer
Autorzy:
Baqir, Yassir Atta
Kadhim, Nada Farhan
Abdaljalil, Rana O.
Powiązania:
https://bibliotekanauki.pl/articles/1030492.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Organic fertilizer
external risk
gamma ray spectrometer
radium equivalent
specific activity
Opis:
Recently the use of organic fertilizers is increased to raise the agricultural products and reclaim land for cultivation in the world. These fertilizers contain many natural radionuclides, such as Uranium series (U-238), Thorium series (Th-232), and Potassium (K-40). Organic fertilizers can be considered as one of the natural sources of radiation in the soil. The specific activities of natural radionuclides U-238, Th-232, and K-40 in organic fertilizers were measured using a gamma-ray spectrometer NaI(Tl) detector and Rad Eye-B20 portable detector. Results of NaI(Tl) detector showed that the mean value of activity concentrations of U-238, Th-232, and K-40 was 2.101 Bq/kg, 0.329 Bq/kg, and 95.791 Bq/kg, respectively, were less than the recommended limits. The mean value of radiometric parameters Raeq, Hin, Hex, Iγ, Iɑ, DƔ, and AEDE were also calculated (9.398 Bq/kg, 0.0355, 0.0249, 0.037, 0.0123, 4.959 nGy/h, 0.0065 mSv/y). But the maximum and minimum values of activity concentration were found in sample O.2 and O.4, respectively. The results of Rad Eye-B20 portable detector showed that the maximum (0.415 Bq/cm2, 0.17 µSv/h, and 1.055 Cps) and the minimum (0.255 Bq/cm2, 0.13 µSv/h, and 0.485 Cps) values of surface contamination, Dose Rate, and General Count Rate per second were respectively found in samples O.2 and O.4; all they were slightly higher than background measurements (0.21 Bq/cm2, 0.12 µSv/h, and 0.44 Cps). Measurements of NaI(Tl) detector were matched and confirmed by Rad Eye-B20 detector. All measurements of the radiological hazard to consumers were less than the recommended limits.
Źródło:
World Scientific News; 2020, 144; 126-140
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gamma-ray and magnetic susceptibility correlation across a Frasnian carbonate platform and the search for "punctata" equivalents in stromatoporoid-coral limestone facies of Moravia
Autorzy:
Geršl, M.
Hladil, J.
Powiązania:
https://bibliotekanauki.pl/articles/2058866.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Moravian Karst
Devonian
limestones
stratigraphy
natural gamma-ray activity
magnetic susceptibility
Opis:
A comparison of the HV-105 Křtiny gamma-ray log (carbonate platform margin and proximal slope, thickness of Frasnian beds ~270 m) with the three times thinner gamma-ray spectrometric section from Mokrá (inner platform, Frasnian ~93.5m) has significantly increased the reliability of stratigraphic correlation between the outer and inner platform areas, i.e. it has allowed strengthening of the detailed links between conodont-bearing and barren sequences. The detailed gamma-ray and magnetic susceptibility patterns also provide promising clues which might help trace the "punctata Zone" stratigraphic equivalents, located far in the interior of the platform stromatoporoid-coral facies.
Źródło:
Geological Quarterly; 2004, 48, 3; 283-292
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of an energy-resolving detection system for mammography applications : a preliminary study
Autorzy:
Taha, Eslam M.
Elmoujarkach, Ezzat A.
Balamesh, Ahmed
Alzaidi, Samir A.
Alhawsawi, Abdulsalam M.
Powiązania:
https://bibliotekanauki.pl/articles/2171786.pdf
Data publikacji:
2022
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
energy-resolving detection systems
gamma-ray imaging
GATE simulation toolkit
mammography
Opis:
Breast cancer remains one of the major causes of mortality among female cancer patients. This fact caused a spark in the medical field, which in turn helped to improve the diagnostic and treatment of breast cancer patients over the years making this field always active with new ideas and innovative methods. In our study, a new method was explored using an energy-resolving detection system made from a NaI (Tl) scintillation detector to detect the gamma photons from an Am-241 radiation source to try and construct an image by scanning the American College of Radiology (ACR) mammography phantom. In addition to the experimental work, a Geant4 Application for Tomographic Emission (GATE) toolkit was used to investigate more complex options to improve the image quality of mammographic systems, which is limited by the experimental setup. From the experimental setup, the researchers were able to construct an image using the 26.3 keV and the 59.5 keV energy photons, to show the largest size tumour (12 mm) in the ACR phantom. With an improved setup in the simulation environment, the majority of the ACR phantom tumours was visible using both energy windows from the 26.3 keV and the 59.5 keV, where the 26.3 keV yielded better quality images showing four tumours compared to three when using 59.5 keV. The simulation results were promising; however, several improvements need to be incorporated into the experimental work so that the system can generate high-resolution mammographic images similar to the ones obtained by the GATE simulation setup.
Źródło:
Nukleonika; 2022, 67, 2; 35--40
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluka simulation of PGNAA system for determining heavy metal pollution in the soil sample
Autorzy:
Zhang, Can
Yang, Jianbo
Li, Rui
Qiao, Yujie
Zhang, Xu
Xu, Jie
Powiązania:
https://bibliotekanauki.pl/articles/146960.pdf
Data publikacji:
2020
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
PGNAA
Fluka
heavy metal
prompt gamma-ray yield
metal ciężki
szybka wydajność
promieniowanie gamma
Opis:
This study presented a self-designed prompt gamma neutron activation analysis (PGNAA) model and used Fluka simulation to simulate the heavy metals (Mn, Cu, Hg, Ni, Cr, Pb) in soil samples. The relationship between the prompt gamma-ray yield of each heavy metal and soil thickness, content of heavy metals in the soil, and source distance was obtained. Simulation results show that the prompt gamma-ray yield of each heavy metal increases with the increase in soil thickness and reaches saturation at 18 cm. The greater the proportion of heavy metals in the soil, the greater the prompt gamma-ray yield. The highest content is approximately 3%, and the change in distance between the neutron source and soil sample does not affect the prompt gamma-ray yield of heavy metals.
Źródło:
Nukleonika; 2020, 65, 1; 13-17
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 48

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