Wyniki wyszukiwania - BazTech

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Applicability of the dielectric barrier discharge for helium ash measurements in the divertor region

Książek I., Brosławski A., Janus H., Pawelec E.

Nukleonika

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2016

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Vol. 61, No. 2

99--102

EN

Controlled fusion based on the magnetic confinement of the plasma is one of the main aims of the Eurofusion programme. In the fusion device, the hydrogen isotopes, in nuclear reactions, will produce helium nuclei. The products, as the ash, will be removed from the plasma in the region of the so-called divertor. Controlling the helium to hydrogen ratio in this ‘exhaust gas’ will provide information about the efficiency of the fusion process as well as of the efficiency of the helium removal system. One of the methods to perform this task is to study the properties of the discharge conducted in such exhaust gas. In this paper, the applicability of the dielectric barrier discharge (DBD) is studied. This preliminary experiment shows a great potential in applicability of this kind of discharge. The optical as well as pulse-height spectra were studied, both revealing very promising properties. In the optical spectrum, one can observe well separated hydrogen and helium spectral lines, with intensities of the same order of magnitude. Moreover, in the registered spectral region, the molecular spectra are negligible. The pulse-height spectra reveal very distinct shape in helium and hydrogen. Checking of this spectrum could provide parallel (redundant) information about the partial pressure of helium in the magnetic confinement fusion (MCF) device exhaust gas.

2

Second order reflection from crystals used in soft X-ray spectroscopy

Książek I.

Nukleonika

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2015

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Vol. 60, No. 2

263--265

EN

In this note the ratio of the second to the first order reflection is determined for the KAP and PbSt crystals, for wavelengths corresponding to the Al K-line emission. The source of the radiation was a low-voltage stabilized X-ray tube. The X-rays were detected with a Bragg spectrometer equipped with a proportional counter detector. The signal measured by the proportional counter was subsequently pulse height analyzed.

3

Distributions of plasma parameters in the gap between two subsequent stabilizing plates in a cascade arc

Książek I.

Nukleonika

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2012

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Vol. 57, No. 2

265-268

EN

Wall-stabilized arcs are commonly used as excitation sources of atoms and low charged ions. Distributions of plasma parameters in the gap between two subsequent stabilizing plates were studied in argon and helium which are commonly used as 'working gas' in experiments aimed at determination of atomic constants. The results were obtained solving set of equations describing plasma in local thermal equilibrium (LTE). As conditions of LTE may be not completely fulfilled obtained absolute values obtained by this method could be deviated from the real one. Nevertheless, the shape of spatial plasma parameters distributions ought to properly represent shape of the plasma. Obtained results reveal very small gradients of plasma parameters in the central part of this gap. This result can be important in future planning of experiments with side-on plasma observation.

4

Conceptual design of Light Impurity Monitor for Wendelstein 7-X

Książek I., Burhenn R., Musielok J.

Nukleonika

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2011

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Vol. 56, No. 2

155-160

EN

As plasma impurity ions can significantly influence the properties of a fusion plasma by dilution and enhancement of the radiation losses, the process of monitoring of their concentrations is one of the most important tasks. A Light Impurity Monitor is needed for monitoring the contamination of the stellarator plasma by carbon, nitrogen, boron, and oxygen impurities, which are indicators for the overload of the plasma facing components, leakage of the vacuum vessel, or wall condition, respectively. Their concentration will be estimated on the basis of emission intensities of their hydrogen-like ions. In this paper a conceptual design of such a spectrometer is presented, including the description of the geometry, the acquisition system and safety systems.

5

Badania wpływu Selolu i seleninu sodu na komórki HeLa in vitro

Dudkiewicz-Wilczyńska J., Książek I., Nowak K., Suchocki P., Flis S., Kiljan M., Anuszewska E.

Chemik

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2011

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Vol. 65, nr 2

105-114

PL

Zaprezentowano wyniki z badań nad antyproliferacyjnym działaniem Selolu 5% na komórki nowotworowe HeLa, w odniesieniu do seleninu sodu. Na podstawie uzyskanych wyników w teście MTT, zawartości białka całkowitego, indukcji apoptozy i penetracji selenu do komórek, stwierdzono zależne od czasu inkubacji cytotoksyczne działanie Selolu, (IC50 ~ 80 ?MSe, 48 h), w porównaniu z silnym działaniem cytotoksycznym seleninu sodu (IC50 ~ 5,9 ?M Se, 24 h). Powolna penetracja selenu z Selolu do komórki nowotworowej, wpływająca na przedłużony czas jego działania, umożliwia potencjalne wykorzystanie Selolu w terapii przeciwnowotworowej.

EN

The paper presents results of studies on the antiproliferative effect of Selol 5% on HeLa tumour cells, as compared to sodium selenite. Based on the results of the MTT test, determination of total protein, apoptosis induction and penetration of selenium into the cells, an incubation time-dependent cytotoxic activity of Selol was established (IC50 ∼80 μM Se, 48 h), and compared to the strong cytotoxic activity of sodium selenite (IC50 ∼ 5,9 μM Se, 24 h). Slow penetration of selenium from Selol into the tumour cell, responsible for the prolonged time of its activity, enables potential application of Selol in antitumour therapy.

6

Bezwykopowa renowacja przewodów kanalizacyjnych spiralnie zwijanymi użebrowanymi taśmami w technologii ROTALOC

Kuliczkowski A., Książek I.

Inżynieria Bezwykopowa

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2008

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nr 3

32-40

EN

The ROTALOC© pipe rehabilitation process is a solution for restoring the hydraulic efficiency, reliability and integrity of aging sewers, stormdrains and culverts. The system consists of a single strip of PVC profile which is progressively wound into the existing pipeline by the ROTALOC© machine. The edges of the profile are interlocked by the ROTALOC© machine as it moves inside the deteriorated pipeline, forming a continuous watertight liner. The winding machine can alter diameter as it traverses the pipeline to produce a liner of the optimal diameter. The Rib Loc technology has been evolving and a variety of different solutions has been developed. The author of the article describes a number of them.

7

Wpływ deformacji plastycznej na widmo elektroluminescencji anodowej elektrod kadmowych

Wacke S., Górecki T., Książek I.

Zeszyty Naukowe. Fizyka / Politechnika Opolska

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1998

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z. 21

51-57

PL

Przedstawiono wyniki eksperymentalnych badan zjawiska elektroluminescencji anodowej towarzyszacej elektrolitycznemu utlenianiu niedeformowanych i deformowanych płytek kadmowych przy stalym napięciu U=45 V zasilającym komórkę elektrolityczną. Proces utleniania przeprowadzono w wodnym roztworze KOH/K2CO3. W zarejestrowanych widmach elektroluminescencji anodowej maksima promieniowania przypadają na około 630 nm co odpowiada energii E=1.97 eV. Według otrzymanych wyników, deformacja plastyczna nie zmienia w widoczny sposób kształtu widma a wpływa jedynie na natężenie świecenia elektrod kadmowych podczas ich utleniania elektrolitycznego.

EN

Results of experimental investigation of the anodic electroluminescence accompanying the electrolytic oxidation of undeformed and plastically deformed cadmium plates at a constant voltage Ug=45 V supplying the electrolytic cell have been presented. The registered spectra of anodic electroluminescence display a broad band emission with a maximum at 630 nm, which corresponds to the light quanta of the energy of E=1.97 eV. The plastic deformation does not change the shape of the spectra, causing only a systematic increase of the electroluminescence intensity in the range of the spectrum with increasing the deformation degree.