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Wyświetlanie 1-6 z 6
Tytuł:
Investigation of corpuscular emission from the Prague Capillary Pinch
Autorzy:
Skladnik-Sadowska, E.
Baranowski, J.
Sadowski, M.
Kolácek, K.
Ripa, M.
Ctibor, P.
Kishinets, A.
Rupasov, A.
Powiązania:
https://bibliotekanauki.pl/articles/147142.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
capillary pinch
corpuscular flux
track detectors
X-radiation
Opis:
The paper presents results of preliminary measurements of the corpuscular radiation from fast z-pinch discharges, which were performed at the Prague Capillary Pinch facility within a frame of the Czech-Polish scientific collaboration programme. Time-integrated measurements were performed by means of a pinhole camera, equipped with nuclear track detectors of the CR-39 type. In order to perform time-resolved measurements the use was made of a single Faraday-type collector and a double-cup system. It was demonstrated that the fast capillary discharges can emit not only pulses of intense visible radiation and soft X-rays, but also pulses of the corpuscular radiation. An optical analysis of the particle tracks was performed. The particle flux at a distance of 20 cm from the collimator outlet was estimated to be 3.5×107 particles/cm2.
Źródło:
Nukleonika; 2002, 47, 1; 31-37
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of uranium concentrations in some building materials in Iraq
Autorzy:
Najam, L. A.
Tawfiq, N. F.
Yassen, Q. A.
Powiązania:
https://bibliotekanauki.pl/articles/148408.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
uranium concentration
fission tracks
CR-39 track detectors
building materials
Opis:
Eleven commonly used building construction materials were collected from several origins in Iraq and analyzed for uranium concentration using a fission track technique. The results of measurements of uranium concentration ranged between 0.22 ppm in ceramics and 1.86 ppm in marble. The obtained results were well below the allowed limit of 11.7 ppm.
Źródło:
Nukleonika; 2013, 58, 2; 329-331
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
D(3He,p)4He and D(d,p)3H fusion in a small plasma focus operated in a deuterium helium-3 gas mixture
Autorzy:
Springham, S.
Sim, T.
Rawat, T.
Lee, P.
Patran, A.
Shutler, P.
Tan, T.
Lee, S.
Powiązania:
https://bibliotekanauki.pl/articles/147428.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
plasma focus
deuterium
helium-3
fusion
CR-39
track detectors
Opis:
Abstract A 3 kJ plasma focus was operated with a 3He-D2 gas mixture, with partial pressures in the ratio of 2:1, corresponding to an atomic number ratio of 1:1 for 3He and D atoms. The fusion reactions D(3He,p)4He and D(d,p)3H were measured simultaneously using CR-39 polymer nuclear track detectors placed inside a pinhole camera positioned on the forward plasma focus axis. A sandwich arrangement of two 1000 mi m thick CR-39 detectors enabled the simultaneous registration of two groups of protons with approximate energies of 16 MeV and 3 MeV arising from the D(3He,p)4He and D(d,p)3H reactions, respectively. Radial track density distributions were obtained from each CR-39 detector and per-shot average distributions were calculated for the two groups of protons. It is found that the D(3He,p)4He and D(d,p)3H proton yields are of similar magnitude. Comparing the experimental distributions with results from a Monte Carlo simulation, it was deduced that the D(3He,p)4He fusion is concentrated close to the plasma focus pinch column, while the D(d,p)3H fusion occurs relatively far from the pinch. The relative absence of D(d,p)3H fusion in the pinch is one significant reason for concluding that the D(3He,p)4He fusion occurring in the plasma focus pinch is not thermonuclear in origin. It is argued that the bulk of the D(3He,p)4He fusion is due to energetic 3He2+ ions incident on a deuterium target. Possible explanations for differing spatial distributions of D(3He,p)4He and D(d,p)3H fusion in the plasma focus are discussed.
Źródło:
Nukleonika; 2006, 51, 1; 47-53
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of characteristics of pulsed ion beams emitted from different small PF devices
Autorzy:
Sadowski, M.
Skladnik-Sadowska, E.
Baranowski, J.
Zebrowski, J.
Kelly, H.
Lepone, A.
Marquez, A.
Milanese, M.
Moroso, R.
Pouzo, J.
Powiązania:
https://bibliotekanauki.pl/articles/146809.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Faraday cups
ion beams
plasma focus
Thomson analyzers
track detectors
Opis:
The paper concerns studies of pulsed ion beams emitted from different small-energy (5–50 kJ) devices of the plasma focus (PF) type. Emission characteristics of the ion beams as measured with nuclear track detectors (NTDs), Faraday-type collectors (FC), and Thomson-type analyzers, are summarized. Common features of the ion emission are considered and some differences are discussed.
Źródło:
Nukleonika; 2000, 45, 3; 179-184
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Background outdoor radon levels in Slovenia
Autorzy:
Vaupotič, J.
Kobal, I.
Križman, M. J.
Powiązania:
https://bibliotekanauki.pl/articles/148834.pdf
Data publikacji:
2010
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radon
outdoor air
solid-state nuclear track detectors (SSNTD)
outdoor radon map
Opis:
Radon (222Rn) activity concentration in outdoor air was measured by exposing track etch detectors at 60 points. Values were found in the range of 3.7–41.0 Bqźm–3, with a geometric mean (GM) of 11.8 Bqźm–3 and geometric standard deviation (GSD) of 2.2. An outdoor radon map of Slovenia was drawn, showing the majority of elevated values to be in the south-west part of the country that is covered by carbonates.
Źródło:
Nukleonika; 2010, 55, 4; 579-582
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charged projectile spectrometry using solid-state nuclear track detector of the PM-355 type
Autorzy:
Malinowska, A.
Jaskóła, M.
Korman, A.
Szydłowski, A.
Malinowski, K.
Kuk, K.
Powiązania:
https://bibliotekanauki.pl/articles/146945.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
solid-state nuclear track detectors (SSNTDs)
PM-355
energy resolution of proton and deuteron
calibration diagrams
track mean gray level
Opis:
To use effectively any radiation detector in high-temperature plasma experiments, it must have a lot of benefits and fulfill a number of requirements. The most important are: a high energy resolution, linearity over a wide range of recorded particle energy, high detection efficiency for these particles, a long lifetime and resistance to harsh conditions existing in plasma experiments and so on. Solid-state nuclear track detectors have been used in our laboratory in plasma experiments for many years, but recently we have made an attempt to use these detectors in spectroscopic measurements performed on some plasma facilities. This paper presents a method that we used to elaborate etched track diameters to evaluate the incident projectile energy magnitude. The method is based on the data obtained from a semiautomatic track scanning system that selects tracks according to two parameters, track diameter and its mean gray level.
Źródło:
Nukleonika; 2015, 60, No. 3, part 2; 591-596
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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