In this work a review of investigations concerning interaction of intense extreme ultraviolet (EUV) and soft X-ray (SXR) pulses with matter is presented. The investigations were performed using laser-produced plasma (LPP) EUV/SXR sources based on a double stream gas puff target. The sources are equipped with dedicated collectors allowing for efficient focusing of the EUV/SXR radiation pulses. Intense radiation in a wide spectral range, as well as a quasi-monochromatic radiation can be produced. In the paper different kinds of LPP EUV/SXR sources developed in the Institute of Optoelectronics, Military University of Technology are described.
Radiation intensities delivered by the sources are sufficient for different kinds of interaction experiments including EUV/SXR induced ablation, surface treatment, EUV fluorescence or photoionized plasma creation. A brief review of the main results concerning this kind of experiments performed by author of the paper are presented. However, since the LPP sources cannot compete with large scale X-ray sources like synchrotrons, free electron lasers or high energy density plasma sources, it was indicated that some investigations not requiring extreme irradiation parameters can be performed using the small scale installations. Some results, especially concerning low temperature photoionized plasmas are very unique and could be hardly obtained using the large facilities.
The paper describes the research on soft X-ray lasers with an active medium created using a gas puff target irradiated
with high-intensity laser pulses. The gas puff target in a form of an elongated gas sheet is produced by pulsed injection of
gas through a slit nozzle using a high-pressure electromagnetic valve. The method of generation of soft X-ray lasers using a
laser-irradiated gas puff target has been developed at the Institute of Optoelectronics. The collaborative experiments were
performed at various laser laboratories using high-intensity laser systems to irradiate the gas puff target and pump the X-ray
laser active medium. Results of these experiments are presented and discussed. Works aimed at increasing the efficiency of
X-ray lasers using a longitudinally irradiated gas puff target are also reviewed.
In der wissenschaftlichen katholischen Dogmatiktheologie werden vier methodologische Haupttypen angewandt: historischer, positivistischer, systematischer (spekulativer) und personalistischer. Darüber hinaus treten zahlreiche fragmentarische oder reduktionistische Methoden auf: hermeneutische, narrative, kerygmatische, intuitive, linguistische, strukturalistische und andere. Die grundsätzlichen methodologische Typen streben danach, nicht nur die Glaubenssätze, sondern die gesamte religiöse Wirklichkeit zu erfassen.
Der Autor ist Begründer eines originalen Personalismussystems. In der Abhandlung erklärt er sich für die Verwendung der maximalistischen Philosophie, darunter auch des Personalismus in der systematischen Theologie als Lehre vom Glauben. Er weist weittragende Bedeutung des Personalismus in der Hermeneutik Joh 1, 14 auf und macht einen Entwurf des Personalismus in Neigung zur dogmatischen Theologie, die heutzutage vom Reismus abgehen muss.
The paper proposes an adaptation of mathematical models derived from the theory of deterministic chaos to short-term power forecasts of wind turbines. The operation of wind power plants and the generated power depend mainly on the wind speed at a given location. It is a stochastic process dependent on many factors and very difficult to predict. Classical forecasting models are often unable to find the existing relationships between the factors influencing wind power output. Therefore, we decided to refer to fractal geometry. Two models based on self-similar processes (M-CO) and (M-COP) and the (M-HUR) model were built. The accuracy of these models was compared with other short-term forecasting models. The modified model of power curve adjusted to local conditions (M-PC) and Canonical Distribution of the Vector of Random Variables Model (CDVRM). Examples of applications confirm the valuable properties of the proposed approaches.
We present spectral emission characteristics from laser-plasma EUV/SXR sources produced by irradiation of < 1 J energy laser pulse on eleven different double stream gas puff targets, with most intense electronic transitions identified in the spectral range from 1 nm to 70 nm wavelength which corresponds to photon energy from 18 eV to 1240 eV. The spectra were obtained using grazing incidence and transmission spectro- graphs from laser-produced plasma emission, formed by the interaction of a laser beam with a double stream gas puff target. Laser pulses with a duration of 4 ns and energy of 650 mJ were used for the experiment. We present the results obtained from three different spectrometers in the wavelength ranges of SXR (1–5.5 nm), SXR/EUV (4–15.5 nm), and EUV (10–70 nm). In this paper, detailed information about the source, gas targets under investigation, the experimental setup, spectral measurements and the results are presented and discussed. Such data may be useful for the identification of adequate spectral emissions from gasses in the EUV and SXR wavelength ranges dedicated to various experiments (i.e. broadband emission for the X-ray coherence tomography XCT) or may be used for verification of magnetohydrodynamic plasma codes.