Number of found documents: 538
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Evaluation of selected parameters of a LIBA2000 glass melt according to ISO 12123.
Václavík, Jan
2016 - English
Measurement of refractive indices of samples, specifically refractive indicies nd, ne and Abbe numbers for spectral lines d and e. Assesment of refractive index variation, internal spectal transmitance and amount of striae in samples.\n Keywords: glass melt; ISO 12123; striae; refractive index; inhomogeneity Available at various institutes of the ASCR
Evaluation of selected parameters of a LIBA2000 glass melt according to ISO 12123.

Measurement of refractive indices of samples, specifically refractive indicies nd, ne and Abbe numbers for spectral lines d and e. Assesment of refractive index variation, internal spectal ...

Václavík, Jan
Ústav fyziky plazmatu, 2016

Device calibration.
Melich, Radek; Václavík, Jan; Žídek, Karel
2016 - English
The device has to be calibrated in absolute terms for its brightness response. This will be facilitated by a combination of an integrating sphere and collimating objective. The emitted total light intensity will be controlled by a reference photodiode inside the integrating sphere. Keywords: absolute brightness calibration Available at various institutes of the ASCR
Device calibration.

The device has to be calibrated in absolute terms for its brightness response. This will be facilitated by a combination of an integrating sphere and collimating objective. The emitted total light ...

Melich, Radek; Václavík, Jan; Žídek, Karel
Ústav fyziky plazmatu, 2016

PROBA3 Coronograph System Progress Report
Horodyská, Petra; Melich, Radek
2016 - English
The scope of this document is to provide to CSL and ESTEC a progress report of ongoing activities as described in Project Management Plan v1_1. TOPTEC main activities cover realization of coronagraph optical elements, housing for this elements, HDD and the Lyot stop realization. In year 2016, the DM model was finished and delivered and the STM model was competely realized and delivered. Toptec started to prepare the documents for Critical Design Review (CDR). Keywords: coronagraph optical elements; housing; HDD; Lyot stop; DM; STM Available at various institutes of the ASCR
PROBA3 Coronograph System Progress Report

The scope of this document is to provide to CSL and ESTEC a progress report of ongoing activities as described in Project Management Plan v1_1. TOPTEC main activities cover realization of coronagraph ...

Horodyská, Petra; Melich, Radek
Ústav fyziky plazmatu, 2016

METIS mirror M0 FS
Lédl, Vít; Melich, Radek; Vít, Tomáš
2016 - English
Scope of the document is to provide required test results with respect to the structure of M0 mirror, FS version. The mirror has a unique numbering M0-C17-20. Keywords: METIS M0 mirror Available at various institutes of the ASCR
METIS mirror M0 FS

Scope of the document is to provide required test results with respect to the structure of M0 mirror, FS version. The mirror has a unique numbering M0-C17-20.

Lédl, Vít; Melich, Radek; Vít, Tomáš
Ústav fyziky plazmatu, 2016

METIST mirror M1 FS
Lédl, Vít; Melich, Radek; Vít, Tomáš
2016 - English
Scope of the document is to provide required test results with respect to the structure and optical performance of individual optical surfaces of M1 mirror, FS version. The mirror has a unique numbering M1-C20-23. Keywords: METIS mirror M1 FS Available at various institutes of the ASCR
METIST mirror M1 FS

Scope of the document is to provide required test results with respect to the structure and optical performance of individual optical surfaces of M1 mirror, FS version. The mirror has a unique ...

Lédl, Vít; Melich, Radek; Vít, Tomáš
Ústav fyziky plazmatu, 2016

Black Chromia Coatings on Metal Tubes for the Solar Collectors
Brožek, V.; Mastný, L.; Novák, M.; Vilémová, Monika; Kubatík, Tomáš František
2016 - English
This paper describes the results of the first phase of the study preparation, structure and properties of coatings modification of black chromium oxide on copper, aluminium, iron and zirconium tubes for solar collectors. The coatings are prepared by plasma spraying of liquid chromate method which is known as liquid precursor plasma spraying. Coatings have the function of an energy trap for thermal radiation wavelengths of 1 μm – 3 μm i.e. in the IR region. At the same time, the coating increases the corrosion resistance of metal substrates. The nanometric structure and thickness of the coating depend of the feeding distance and the concentration of chromate precursors. For the deposition of nanometric splats of melt chromiumIII oxide, a new type of feeder that injects precursors into the water stabilized thermal plasma produced by the WSP® generator has been\ndeveloped.\n Keywords: Solar collector; black chromia; plasma spraying; suspension spraying Available at various institutes of the ASCR
Black Chromia Coatings on Metal Tubes for the Solar Collectors

This paper describes the results of the first phase of the study preparation, structure and properties of coatings modification of black chromium oxide on copper, aluminium, iron and zirconium tubes ...

Brožek, V.; Mastný, L.; Novák, M.; Vilémová, Monika; Kubatík, Tomáš František
Ústav fyziky plazmatu, 2016

Spectroscopic Study of Underwater Electrical Discharge Generated by Nanosecond Pulses.
Pongrác, Branislav; Šimek, Milan; Babický, Václav; Člupek, Martin; Lukeš, Petr
2016 - English
Underwater electrical discharge generated by high voltage pulses with nanosecond duration (~110 kV amplitude on the needle, ~5 ns duration (FWHM), 1 Hz repetition rate) has been investigated. Time–resolved optical emission spectroscopy showed different emission spectra profile of the ns–pulsed discharge compared to the μs–pulsed discharges investigated previously. Some characteristic peaks typical for water discharges (Hα, OI) were clearly visible in the spectra. In addition, the integral light emission of the discharge was recorded by photomultiplier tube. Keywords: nanosecond discharge; water discharge; time-resolved emission spectroscopy Available at various institutes of the ASCR
Spectroscopic Study of Underwater Electrical Discharge Generated by Nanosecond Pulses.

Underwater electrical discharge generated by high voltage pulses with nanosecond duration (~110 kV amplitude on the needle, ~5 ns duration (FWHM), 1 Hz repetition rate) has been investigated. ...

Pongrác, Branislav; Šimek, Milan; Babický, Václav; Člupek, Martin; Lukeš, Petr
Ústav fyziky plazmatu, 2016

Corrosion behavior of plasma coatings CuAl10 and CuAl50 on magnesium alloy AZ 91
Kubatík, Tomáš František; Stoulil, J.; Stehlíková, K.; Slepička, P.; Janata, Marek
2016 - English
The most common magnesium alloy AZ 91 is widely used as a structural material, but its use is limited at higher temperatures and high humidity. Plasma spraying is a technology that allows to prepare protective metallic and non-metallic coatings on a wide variety of substrates including magnesium and its alloys. In this study, CuAl10 and CuAl50 were plasma sprayed on magnesium alloy AZ 91 with the aim to study corrosion resistance of the plasma sprayed coatings. The corrosion resistance of layers was evaluated by the method of electrochemical potentiodynamic measurement as well as long-term corrosion tests in a condensation chamber with 0.5 mol\nNaCl at the temperature of 35 °C for 1344 hours. Layers with 1, 2, 5 passes and passes of CuAl10 with the thickness ranging from 75 to 716 mm and CuAl50 with the thickness ranging from 64 to 566 mm were prepared. The increased corrosion velocity was observed in the case of thin layers of 2 and 5 passes due to the development of a galvanic corrosion couple. The CuAl10 layer prepared with ten passes has an outstanding corrosion resistance. Keywords: magnesium alloy AZ 91; plasma spraying; corrosion resistance Available at various institutes of the ASCR
Corrosion behavior of plasma coatings CuAl10 and CuAl50 on magnesium alloy AZ 91

The most common magnesium alloy AZ 91 is widely used as a structural material, but its use is limited at higher temperatures and high humidity. Plasma spraying is a technology that allows to prepare ...

Kubatík, Tomáš František; Stoulil, J.; Stehlíková, K.; Slepička, P.; Janata, Marek
Ústav fyziky plazmatu, 2016

Gap – gep – mezera?
Obdržálek, J.; Bílková, Petra; Mlynář, Jan
2016 - Czech
Jsou prezentovány obecné terminologické obtíže v odborném jazyce fyziky kontinua. Zvláště se příspěvek zabývá výhodami a nevýhodami velkého vlivu angličtiny z hlediska grafického (typologického) a fonetického. They presented the general terminological difficulties in technical language continuum physics. In particular it deals with the advantages and disadvantages of the great influence of English in terms of graphical (typological) and phonetic Keywords: phonetics; typology Available at various institutes of the ASCR
Gap – gep – mezera?

Jsou prezentovány obecné terminologické obtíže v odborném jazyce fyziky kontinua. Zvláště se příspěvek zabývá výhodami a nevýhodami velkého vlivu angličtiny z hlediska grafického (typologického) a ...

Obdržálek, J.; Bílková, Petra; Mlynář, Jan
Ústav fyziky plazmatu, 2016

METIS mirror M2 FS
Lédl, Vít; Melich, Radek; Vít, Tomáš
2016 - English
Scope of the document is to provide required test results with respect to the structure and optical performance of individual optical surfaces of M2 mirror FS version. The mirror has a unique numbering M2-C21-24. Keywords: METIS mirror M2 FS Available at various institutes of the ASCR
METIS mirror M2 FS

Scope of the document is to provide required test results with respect to the structure and optical performance of individual optical surfaces of M2 mirror FS version. The mirror has a unique ...

Lédl, Vít; Melich, Radek; Vít, Tomáš
Ústav fyziky plazmatu, 2016

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