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In China war das europäische Völkerrecht bis zur Mitte des 19. Jahrhunderts weitgehend unbekannt. Abgesehen von einzelnen Verträgen aus dem 17. und 18. Jahrhundert gab es weder Vertragspraxis noch Völkerrechtswissenschaft. Dies änderte sich erst durch Chinas Kriege mit westlichen Mächten. Die »Barbaren« nutzten ihre militärische Überlegenheit gegenüber China, um durch erzwungene völkerrechtliche Friedensverträge Handelsinteressen zu verwirklichen und halbkoloniale Strukturen zu etablieren. Diese Friedensübereinkommen wurden und werden, als "ungleiche Verträge" überschrieben, vielfach in der wissenschaftlichen Literatur besprochen. ...
Humanitarismus und humanitäre Intervention müssen sich gleichermaßen die Frage nach Motivation und Rechtfertigung gefallen lassen. Sind Motive einer Intervention hinreichend humanitär, um von einer humanitären Intervention zu sprechen? Und im Rahmen welcher normativen Muster erscheinen sie als legitim? Zwei neue Bücher nähern sich dem Themenkomplex auf unterschiedliche Weise. ...
In der gegenwärtigen Forschung zu Recht und Kolonialismus zeigt sich ein interessanter Gegensatz: Während das Recht vor allem als ein Instrument kolonialer Machtausübung verstanden wird, erscheinen Juristen, die nach einer Ausbildung an europäischen oder amerikanischen Universitäten in ihre Herkunftsländer zurückkehrten, als zentrale Akteure lokaler Unabhängigkeitsbewegungen, aus denen heraus neue Nationalstaaten entstanden. Dieser Gegensatz wird beispielhaft illustriert durch aktuelle Arbeiten von Turan Kayaoglu zum Legal Imperialism sowie Arnulf Becker-Lorca und seine Figur des Semi-Peripheral Jurist. Das Buch Asian Legal Revivals – Lawyers in the Shadow of Empire erschien 2010 und geht daher nicht direkt auf diese Arbeiten ein, dennoch ist es ein Beitrag dazu, beide Beobachtungen miteinander zu verbinden. Die Rechtssoziologen Yves Dezalay und Bryant G. Garth, die gemeinsam bereits sechs Bücher verfasst oder herausgegeben haben, untersuchen die Rolle von Juristen in der Herausbildung und Legitimation politischer Herrschaft in sieben asiatischen Ländern im 19. und 20. Jahrhundert. ...
The study of civilization is one of the core subjects of international legal history. This is no recent development. Jörg Fisch published his seminal work "Die Europäische Expansion und das Völkerrecht" in 1984, the same year in which Gerrit W. Gong presented his renowned "Standard of Civilization". Today, the more recent works by Martti Koskenniemi and Antony Anghie probably represent the most influential research in this field. What all these path breaking works have in common is that they discuss concepts of civilization in international law especially with regard to its function as providing justification narratives for the European/non-European unequal relations, in particular in the 19th century. ...
Above 1 MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the fissioning nucleus. This effect has to be taken into account for the efficiency estimation of devices used for fission cross section measurements. In addition it bears information on the spin deposition mechanism and on the structure of transitional states. We designed and constructed a detection device, based on Parallel Plate Avalanche Counters (PPAC), for measuring the fission fragment angular distributions of several isotopes, in particular 232Th. The measurement has been performed at n_TOF at CERN taking advantage of the very broad energy spectrum of the neutron beam. Fission events were recognized by back to back detection in coincidence in two position-sensitive detectors surrounding the targets. The detection efficiency, depending mostly on the stopping of fission fragments in backings and electrodes, has been computed with a Geant4 simulation and validated by the comparison to the measured case of 235U below 3 keV where the emission is isotropic. In the case of 232Th, the result is in good agreement with previous data below 10 MeV, with a good reproduction of the structures associated to vibrational states and the opening of second chance fission. In the 14 MeV region our data are much more accurate than previous ones which are broadly scattered.
Die geistes- und sozialwissenschaftlichen Disziplinen haben ihr Spektrum in der jüngeren Vergangenheit um globale Perspektiven erweitert. Auch für das Feld der Intellectual History liegt nun ein Sammelband von Samuel Moyn und Andrew Sartori vor, der die Frage des Globalen diskutiert und dabei viele Beobachtungen enthält, die über das Feld der Ideen- und Geistesgeschichte hinaus Beachtung verdienen. Von rechtshistorischem Interesse sind vor allem die Abschnitte zur Konzeption des Globalen und zur Übersetzung und Verankerung globaler normativer Muster. ...
We have measured the radiative neutron-capture cross section and the total neutron-induced cross section of one of the most important isotopes for the s process, the 25Mg. The measurements have been carried out at the neutron time-of-flight facilities n_TOF at CERN (Switzerland) and GELINA installed at the EC-JRC-IRMM (Belgium). The cross sections as a function of neutron energy have been measured up to approximately 300 keV, covering the energy region of interest to the s process. The data analysis is ongoing and preliminary results show the potential relevance for the s process.
The study of neutron-induced reactions is of high relevance in a wide variety of fields, ranging from stellar nucleosynthesis and fundamental nuclear physics to applications of nuclear technology. In nuclear energy, high accuracy neutron data are needed for the development of Generation IV fast reactors and accelerator driven systems, these last aimed specifically at nuclear waste incineration, as well as for research on innovative fuel cycles. In this context, a high luminosity Neutron Time Of Flight facility, n_TOF, is operating at CERN since more than a decade, with the aim of providing new, high accuracy and high resolution neutron cross-sections. Thanks to the features of the neutron beam, a rich experimental program relevant to nuclear technology has been carried out so far. The program will be further expanded in the near future, thanks in particular to a new high-flux experimental area, now under construction.
The neutron sensitivity of the C6D6 detector setup used at n_TOF facility for capture measurements has been studied by means of detailed GEANT4 simulations. A realistic software replica of the entire n_TOF experimental hall, including the neutron beam line, sample, detector supports and the walls of the experimental area has been implemented in the simulations. The simulations have been analyzed in the same manner as experimental data, in particular by applying the Pulse Height Weighting Technique. The simulations have been validated against a measurement of the neutron background performed with a natC sample, showing an excellent agreement above 1 keV. At lower energies, an additional component in the measured natC yield has been discovered, which prevents the use of natC data for neutron background estimates at neutron energies below a few hundred eV. The origin and time structure of the neutron background have been derived from the simulations. Examples of the neutron background for two different samples are demonstrating the important role of accurate simulations of the neutron background in capture cross-section measurements.
The n_TOF facility operates at CERN with the aim of addressing the request of high accuracy nuclear data for advanced nuclear energy systems as well as for nuclear astrophysics. Thanks to the features of the neutron beam, important results have been obtained on neutron induced fission and capture cross sections of U, Pu and minor actinides. Recently the construction of another beam line has started; the new line will be complementary to the first one, allowing to further extend the experimental program foreseen for next measurement campaigns.