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Wyszukujesz frazę "high temperature" wg kryterium: Wszystkie pola


Tytuł:
Photomultiplier tube signal conditioning for high-temperature applications
Autorzy:
Zezuliński, Kacper
Brosławski, Andrzej
Slipukhin, Ivan
Guzik, Zbigniew
Krakowski, Tomasz
Burakowski, Szymon
Kaźmierczak, Łukasz
Łubian, Grzegorz
Milewski, Piotr
Saworska, Gabriela
Trela, Krystian
Powiązania:
https://bibliotekanauki.pl/articles/24202756.pdf
Data publikacji:
2023
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high-temperature environment
photomultiplier tube
preamplifier
radiation detector
scintillation
signal conditioning
Opis:
Ionizing radiation detection in harsh environment conditions often requires additional signal processing to match the requirements of the commercial data readout systems. The subject of this paper is the design of the high-temperature (HT) signal conditioning module that ensures the applicability of scintillation detectors that utilize photomultiplier tubes (PMT) with moderate sampling rate instrumentation. The design was developed for the operation in HT environments (up to 120°C). In order to achieve the optimal signal shape, the module combines a charge amplifi er and a low-pass fi ltering circuitry. An embedded power supply section makes it a complete, standalone unit requiring a single 12 V supplying line. A comprehensive analysis of the developed device, named “PreAmp Shape”, was conducted in order to prove the intended functionality over the different working conditions.
Źródło:
Nukleonika; 2023, 68, 4; 91--96
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High - temperature oxidation resistance in yttrium implanted stainless steel
Autorzy:
Barlak, M.
Piekoszewski, J.
Werner, Z.
Sartowska, B.
Waliś, L.
Starosta, W.
Kierzek, J.
Kowalska, E.
Wilhelm, R. A.
Pochrybniak, C.
Woźnica, M.
Powiązania:
https://bibliotekanauki.pl/articles/146785.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high-temperature oxidation resistance
ion implantation
yttrium
Opis:
Austenitic AISI 304, 316L and ferritic 430 stainless steels were implanted with yttrium to fluences ranging between 1 x 1015 and 5 x 1017 ions/cm2. The samples were subjected to oxidation in air at a temperature of 1000 centigrade for a period of 100 h and next examined by stereoscopic optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX) and Rutherford back scattering spectrometry (RBS). The results obtained with the use of ion implantation are discussed.
Źródło:
Nukleonika; 2012, 57, 4; 473-476
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical modelling of modular high-temperature gas-cooled reactors with thorium fuel
Autorzy:
Oettingen, Mikołaj
Cetnar, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/2055669.pdf
Data publikacji:
2021
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
HTR
homogenization
thorium
Monte Carlo
Opis:
The volumetric homogenization method for the simplified modelling of modular high-temperature gas-cooled reactor core with thorium-uranium fuel is presented in the paper. The method significantly reduces the complexity of the 3D numerical model. Hence, the computation time associated with the time-consuming Monte Carlo modelling of neutron transport is considerably reduced. Example results comprise the time evolutions of the effective neutron multiplication factor and fissionable isotopes (233U, 235U, 239Pu, 241Pu) for a few configurations of the initial reactor core.
Źródło:
Nukleonika; 2021, 66, 4; 133--138
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary computational and experimental design studies of the ISHTAR thermostatic rig for the high-temperature reactors materials irradiation
Autorzy:
Talarowska, Anna
Lipka, Maciej
Wojtania, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2055665.pdf
Data publikacji:
2021
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high-temperature reactor
HTR
irradiation
materials
reactor MARIA
Opis:
The Ir radiation System for High-Temperature Reactors (ISHTAR) thermostatic rig will be used to irradiate advanced core material samples in conditions corresponding to those prevailing in the high-temperature reactors (HTRs): these conditions include a stable temperature extending up to 1000°C in the helium atmosphere. Computational and experimental studies concerning the design have been conducted, proving the possibility of these conditions’ fulfi llment inside the rig while maintaining the safety limits for MARIA research reactor. The outcome is the thermostatic rig design that will be implemented in the MARIA reactor. Appropriate irradiation temperature will be achieved by a combination of electric heating with the control system, gamma heating, and a helium insulation gap with precisely designed thickness. The ISHTAR rig will be placed inside the vertical irradiation channel, which is located in the reactor pool. The device is being developed from scratch at the Nuclear Facilities Operation Department of the National Centre for Nuclear Research as a part of the GOSPOSTRATEG programme
Źródło:
Nukleonika; 2021, 66, 4; 127--132
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary results of 57Fe Mössbauer spectroscopy of metamict samarskite after one-hour high temperature annealing in argon
Autorzy:
Malczewski, D.
Grabias, A.
Powiązania:
https://bibliotekanauki.pl/articles/146552.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
samarskite
metamict minerals
Mössbauer spectroscopy
recrystallization
Opis:
The preliminary results of 57Fe Mössbauer spectroscopy and X-ray diffraction (XRD) of fully metamict samarskite dated at ~1500 Ma, which absorbed -dose of 6.5 × 1017 α-decay mg–1, are reported after one-hour annealing at 673, 873, 1173 and 1373 K in argon atmosphere. Metamict minerals contain radioactive elements that degrade their crystal structures over geological time. All the Mössbauer spectra obtained can be fitted to two quadrupole doublets assigned to Fe2+ and Fe3+ in octahedral positions. The relative contribution of Fe2+ (Fe2+/Fe) reaches a minimum of 0.10 at 1173 K.
Źródło:
Nukleonika; 2017, 62, 2; 141-144
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sorption properties of stainless steel membranes impregnated with titanium dioxide sorbent
Autorzy:
Bilewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/147324.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high temperature adsorption
titanium oxide
impregnated membrane
Opis:
High-temperature sorption of corrosion products from primary cooling circuit is an effective method for radiation reduction in pressurize and boiling reactor plants. We have developed a suitable high temperature resistant adsorbent by impregnating a porous stainless steel membrane with titanium oxide. The adsorption studies of corrosion products in soluble and insoluble forms indicate that the stainless steel membrane impregnated with TiO2 combines high affinity of TiO2 for transition metal cations with a high mechanical stability of the porous steel membrane under high-temperature and highpressure conditions.
Źródło:
Nukleonika; 2004, 49, 4; 163-165
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of dense deuterium plasma pulses on materials in Plasma Focus device
Autorzy:
Ivanov, L.
Pimenov, V.
Maslyaev, S.
Dyomina, E.
Gribkov, V.
Mezzetti, F.
DeChiara, P.
Powiązania:
https://bibliotekanauki.pl/articles/146708.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high-temperature plasma
material science
plasma focus
Opis:
Experiments on the influence of high-temperature plasma nanosecond pulse radiation, as generated in plasma focus device, on the W-Cu pseudoalloy, V-35at%Ti alloy, austenitic chromium-manganese 10Cr12Mn20W and 25Cr12Mn20W steels have been carried out. Features of damages, phase-structural transformations and chemical content changes in those materials under such irradiation were investigated.
Źródło:
Nukleonika; 2000, 45, 3; 203-207
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwagi do raportu Zespołu Ministerstwa Energii ds. reaktora wysokotemperaturowego
Remarks to the Report of the Ministry of Energy Committee on High-Temperature Reactor
Autorzy:
Mikulski, A.
Powiązania:
https://bibliotekanauki.pl/articles/214422.pdf
Data publikacji:
2018
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
reaktory wysokotemperaturowe
HTGR
NCBJ
high temperature reactor
NCNR
Opis:
Raport Zespołu ds. analizy i przygotowania warunków do wdrożenia wysokotemperaturowych reaktorów jądrowych opublikowany przez Ministerstwo Energii w styczniu 2017 r. rekomenduje rozpoczęcie przygotowań do wykorzystania reaktorów wysokotemperaturowych chłodzonych gazem (HTGR) do produkcji ciepła technologicznego w przemyśle. Ten typ reaktora zostały wybrany po analizie wielu innych typów. Przewiduje się wybudowanie najpierw reaktora badawczego o mocy 10 MWt do 2025 r., a następnie pierwszego reaktora produkcyjnego do 2031 r. we współpracy z wybranym kontrahentem zagranicznym.
Report of the Committee for Analysis and Preparation of Conditions for Deployment of High-Temperature Nuclear Reactors (HTGR) was published in January 2017 by the Ministry of Energy. The Committee recommends to begin preparation of HTGR deployment for production of industrial heat. This type of reactor was selected as the best option after having analyzed many other types. It is foreseen that the construction of the first research reactor of 10 MWt power will be carried out until year 2025 and later, of an industrial reactor until 2031 with cooperation of selected foreign company.
Źródło:
Postępy Techniki Jądrowej; 2018, 1; 21-25
0551-6846
Pojawia się w:
Postępy Techniki Jądrowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calibration and applications of modern track detectors CR-39/PM-355 in nuclear physics and high temperature plasma experiments
Autorzy:
Malinowska, A.
Szydłowski, A.
Jaskóła, M.
Korman, A.
Sartowska, B.
Sadowski, M. J.
Badziak, J.
Żebrowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/146906.pdf
Data publikacji:
2008
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
PM-355 detectors
corpuscular diagnostics
nuclear-fusion applications
Opis:
Solid-state nuclear track detectors (SSNTDs) have been used for the registration of charged particles practically since the beginning of the 1960s, when a new class of detectors, called dielectric track detectors, were discovered. The paper describes applications of the SSNTDs type PM-355 for diagnostics of fusion-reaction protons and other ions emitted from plasma focus (PF) devices, tokamaks and laser facilities. Such detectors were also used in biomedical experiments for beam profile measurements. The results of our calibration studies of SSNTDs as well as charged particle- and biomedical measurements, which were carried out within different facilities, are presented.
Źródło:
Nukleonika; 2008, 53, suppl. 2; 15-19
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three-channel X-ray detection head for diagnostics of plasma in noisy environment
Autorzy:
Ryć, L.
Kaczmarczyk, J.
Martinez, J. F.
Scholz, M.
Słysz, M.
Powiązania:
https://bibliotekanauki.pl/articles/148717.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high-temperature plasma
semiconductor detector
X-ray diagnostics
Opis:
A compact, three-channel, noise-resistant detection head based on semiconductor detectors has been built for the diagnostics of X-ray emission from plasmas. It is useful in the energy range of 0.5–20 keV.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 95-97
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on magnetron-sputtered zirconium-silicide coatings deposited on zirconium alloy for the enhancement of their high-temperature oxidation resistance
Autorzy:
Starosta, Wojciech
Semina, Viera K.
Smolik, Jerzy
Waliś, Lech
Rydzewski, Michał
Sartowska, Bożena
Powiązania:
https://bibliotekanauki.pl/articles/146247.pdf
Data publikacji:
2020
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
accident tolerant fuels
zirconium-silicide coatings
magnetron sputtering
Opis:
Zirconium alloys used widely in nuclear industry as fuel claddings are prone to violent oxidation in water steam atmosphere in the case of loss of coolant accident (LOCA). Accompanying generation of large quantities of heat and explosive gaseous hydrogen may lead to destruction of nuclear core. As the safety of nuclear installations is of primary importance, intensive research works are conducted on the development of so-called accident tolerant fuels much less prone to oxidation. In this paper, the application of external zirconium-silicide coatings deposited by magnetron sputtering is proposed. The preliminary results of their synthesis and studies of air oxidation properties at elevated temperatures are presented.
Źródło:
Nukleonika; 2020, 65, 3; 73-79
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-integrated diagnostics of X-ray emission from PALS and PF 1000 : preliminary results
Autorzy:
Ryć, L.
Krása, J.
Juha, L.
Kaczmarczyk, J.
Paduch, M.
Parys, P.
Tomaszewski, K.
Scholz, M.
Powiązania:
https://bibliotekanauki.pl/articles/148024.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
high-temperature plasma
semiconductor detector
thermoluminescent detector
X-ray diagnostics
Opis:
Thermoluminescent and semiconductor detectors operating in an integrating mode have been applied to the measurement of X-ray flashes of high intensity from large plasma facilities. A detection head of special kind has been developed to perform comparison measurements with the use of the detectors of both kinds.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 41-43
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CVD diamond detectors for fast alpha particles escaping from the tokamak D-T plasma
Autorzy:
Wodniak, I.
Drozdowicz, K.
Dankowski, J.
Gabańska, B.
Igielski, A.
Kurowski, A.
Marczewska, B.
Nowak, T.
Woźnicka, U.
Powiązania:
https://bibliotekanauki.pl/articles/146634.pdf
Data publikacji:
2011
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
CVD diamond detector
lost alpha particles
high temperature plasma diagnostics
Opis:
Measurements of the so-called lost alpha particles escaping from thermonuclear plasma in future tokamaks (such as ITER) for energy production would be essential for monitoring the energy balance in these devices. The detection would have to be carried out in a harsh environment (with high nuclear radiation fluxes, high temperature, etc.), which limits the use of common semiconductors for charged particle detection. Diamond seems to be an attractive material for alpha particle detectors in these conditions. In this paper an analysis of properties of a diamond detector for spectrometric alpha measurements is reported. A high purity CVD (chemical vapour deposition) single crystal diamond detector was used, fabricated for this dedicated application by the Diamond Detector Ltd. The energy calibration was carried out using a triple alpha particle isotope source, AMR33 (239Pu, 241Am, 244Cm). A very good energy resolution, ca. 20 keV at ca. 5.5 MeV had been obtained, which is comparable to that of the silicon detector. The linearity of the diamond detector amplitude response to the alpha particle energy was analyzed with the use of mono-energetic (0.4–2 MeV) ion beam from a Van de Graaff accelerator. Results of the measurements using the AMR33 source deviate at most 30 keV from the calibration line obtained in this way.
Źródło:
Nukleonika; 2011, 56, 2; 143-147
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assesment of advanced step models for steady state Monte Carlo burnup calculations in application to prismatic HTGR
Autorzy:
Kępisty, G.
Cetnar, J.
Powiązania:
https://bibliotekanauki.pl/articles/146581.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
burnup
high temperature gas-cooled reactor (HTGR)
Monte Carlo
stability
step model
Opis:
In this paper, we compare the methodology of different time-step models in the context of Monte Carlo burnup calculations for nuclear reactors. We discuss the differences between staircase step model, slope model, bridge scheme and stochastic implicit Euler method proposed in literature. We focus on the spatial stability of depletion procedure and put additional emphasis on the problem of normalization of neutron source strength. Considered methodology has been implemented in our continuous energy Monte Carlo burnup code (MCB5). The burnup simulations have been performed using the simplified high temperature gas-cooled reactor (HTGR) system with and without modeling of control rod withdrawal. Useful conclusions have been formulated on the basis of results.
Źródło:
Nukleonika; 2015, 60, No. 3, part 2; 523-529
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Erratum to “Preliminary results of 57Fe Mössbauer spectroscopy of metamict samarskite after one-hour high temperature annealing in argon” [Nukleonika 2017;62(2):141-144]
Autorzy:
Malczewski, D.
Grabias, A.
Powiązania:
https://bibliotekanauki.pl/articles/147593.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Źródło:
Nukleonika; 2017, 62, 4; 311
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł

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