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Experimental and calculational salts' properties investigation for MSR reactors from nuclear data point-of-view
Burian, Jiří ; Ing. Miroslav Zeman, PhD., SÚJB RC Brno (referee) ; Katovský, Karel (advisor)
Nowadays there is research into molten salt reactors. The use of chlorine-based salts, which would be more available than known fluoride salts, is envisaged. The subject of research is not only the chemical and physical properties of chloride salts, but also their behavior in the neutron field and the influence of neutron balance inside the reactor. Many properties can also be determined using calculations that draw information from scientific nuclear libraries (endf). The purpose of this work is to compare important nuclear libraries with each other, and also to compare the reaction rates calculated from the library data with the reaction rates obtained by self-measurement. The preview will include a description of the necessary activities associated with the preparation of measurements, instructions for compiling the computer program NJOY and the process of the measurement itself. At the end of the work will be summarized the results and statements of which nuclear library is the closest in its values to the results of experiments.
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Characterization of the neutron AmBe source using threshold activation detectors
Burian, Jiří ; Zeman, Miroslav (referee) ; Král, Dušan (advisor)
Neutron activation analysis is used to characterize an unknown neutron field source or material of unknown composition. Using known reactions that take place in the activation detector due to the action of the neutron field, their measurement and evaluation, we can describe the composition of the source if we know the material composition of the activation detector, or, conversely, if we do not know the materials from which the activation detector is made, we can find out if we put this detector of unknown composition into the action of neutron radiation of known origin.
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Materials shielding properties measurement
Michal, Martin ; Burian, Jiří (referee) ; Katovský, Karel (advisor)
This thesis deals with the issue of ionizing radiation, specifically gamma radiation and its shielding. This radiation is produced, for example, during a fission reaction in a nuclear reactor. Materials such as lead, or concrete are most often used to shield gamma radiation. This is due to their low cost and high density. The task of new trends is to try to replace these existing materials with more efficient, lighter, and non-toxic materials. The aim of the practical part was the calculation of linear attenuation coefficients. For the calculation, the values of the thickness of the shielding sheets, the intensity of the unattenuated beam and the attenuated beam were needed. These values were determined from measurements. For more accurate calculations, the background value was also measured, which was then subtracted from the intensity values of the undamped beam. The resulting values were compared with each other.
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The Prague Metro - phenomenon in the context of Czechoslovak history
Burian, Jiří ; Mücke, Pavel (advisor) ; Krátká, Lenka (referee)
6 Abstract The thesis deals with Prague metro as a social phenomenon in the history context of Czechoslovakia and Czech Republic in recent two centuries. The work focus on perception of Prague metro from the point of view of general contenporary history and well known public sources in comparison with perception of common people or different subcultures. It also informs about all valuable resources about Prague metro and subject these to continual critical evaluation. In order to make a full understanding of the context, there is also a short part about history of Prague metro. The empiric part is processed by analogical approach to Czech and Czechoslovak history as well as interpretation of the used interviews.
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Experimental and calculational salts' properties investigation for MSR reactors from nuclear data point-of-view
Burian, Jiří ; Ing. Miroslav Zeman, PhD., SÚJB RC Brno (referee) ; Katovský, Karel (advisor)
Nowadays there is research into molten salt reactors. The use of chlorine-based salts, which would be more available than known fluoride salts, is envisaged. The subject of research is not only the chemical and physical properties of chloride salts, but also their behavior in the neutron field and the influence of neutron balance inside the reactor. Many properties can also be determined using calculations that draw information from scientific nuclear libraries (endf). The purpose of this work is to compare important nuclear libraries with each other, and also to compare the reaction rates calculated from the library data with the reaction rates obtained by self-measurement. The preview will include a description of the necessary activities associated with the preparation of measurements, instructions for compiling the computer program NJOY and the process of the measurement itself. At the end of the work will be summarized the results and statements of which nuclear library is the closest in its values to the results of experiments.
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Characterization of the neutron AmBe source using threshold activation detectors
Burian, Jiří ; Zeman, Miroslav (referee) ; Král, Dušan (advisor)
Neutron activation analysis is used to characterize an unknown neutron field source or material of unknown composition. Using known reactions that take place in the activation detector due to the action of the neutron field, their measurement and evaluation, we can describe the composition of the source if we know the material composition of the activation detector, or, conversely, if we do not know the materials from which the activation detector is made, we can find out if we put this detector of unknown composition into the action of neutron radiation of known origin.
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The Prague Metro - phenomenon in the context of Czechoslovak history
Burian, Jiří ; Mücke, Pavel (advisor) ; Krátká, Lenka (referee)
6 Abstract The thesis deals with Prague metro as a social phenomenon in the history context of Czechoslovakia and Czech Republic in recent two centuries. The work focus on perception of Prague metro from the point of view of general contenporary history and well known public sources in comparison with perception of common people or different subcultures. It also informs about all valuable resources about Prague metro and subject these to continual critical evaluation. In order to make a full understanding of the context, there is also a short part about history of Prague metro. The empiric part is processed by analogical approach to Czech and Czechoslovak history as well as interpretation of the used interviews.
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