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This policy note summarizes our assessment of financial sanctions against Russia. We see an increase in sanctions severity starting from (1) the widely discussed SWIFT exclusions, followed by (2) blocking of correspondent banking relationships with Russian banks, including the Central Bank, alongside secondary sanctions, and (3) a full blacklisting of the ‘real’ export-import flows underlying the financial transactions. We assess option (1) as being less impactful than often believed yet sending a strong signal of EU unity; option (2) as an effective way to isolate the Russian banking system, particularly if secondary sanctions are in place, to avoid workarounds. Option (3) represents possibly the most effective way to apply economic and financial pressure, interrupting trade relationships.
We measured the Coulomb dissociation of 16O into 4He and 12C at the R3B setup in a first campaign within FAIR Phase 0 at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The goal was to improve the accuracy of the experimental data for the 12C(α,γ)16O fusion reaction and to reach lower center-ofmass energies than measured so far.
The experiment required beam intensities of 109 16O ions per second at an energy of 500 MeV/nucleon. The rare case of Coulomb breakup into 12C and 4He posed another challenge: The magnetic rigidities of the particles are so close because of the same mass-to-charge-number ratio A/Z = 2 for 16O, 12C and 4He. Hence, radical changes of the R3B setup were necessary. All detectors had slits to allow the passage of the unreacted 16O ions, while 4He and 12C would hit the detectors' active areas depending on the scattering angle and their relative energies. We developed and built detectors based on organic scintillators to track and identify the reaction products with sufficient precision.
Internationale Gerichte sollen Konflikte zwischen Staaten befrieden. Dass es dabei nicht immer nur um das Völkerrecht geht, zeigt der Streit zwischen den USA und dem Iran. Die gegenwärtige US-Regierung lehnt den Internationalen Gerichtshof als politisch gelenkt ab – und schadet sich damit vor allem selbst.
The relationship between past and present has been the subject of controversial debates in historical research time and again. In 2013, to give a prominent example, Philip Alston in a review essay discussed the issue of "Does the past matter?" with regard to a debate on the origins of human rights. The debate was dedicated to the controversial question of "[h]ow far back can we trace the genealogy of today’s international human rights system". In this review, I would like to rephrase this question to ask instead to what degree the present matters for historical writing. Other than in the work of Alston, this is not meant as a question on the contingency and path-dependence of history, but rather as a reflection on how historians describe and evaluate the past and what role knowledge of the present may have in this context. ...
Neuere Geschichten des Völkerrechts zeichnen sich dadurch aus, dass sie das Recht und dessen Wirksamkeit nicht losgelöst von sozialen und historischen Kontexten betrachten. In seinem beeindruckenden Buch "Frieden durch Recht?" über den Friedensschluss nach dem ersten Weltkrieg zeigt Marcus M. Payk (vgl. die Rezension in diesem Band), dass das Recht zwar über eine eigene Form und Logik verfügt, dessen Bindungswirkung aber nicht ohne dessen Kontexte verstanden werden kann. ...
Das Recht nimmt keine zentrale Stellung ein in diesem Band zu "Asian Perspectives on the Paris Peace Conference and the Interwar Order, 1919–33", dies sei gleich zu Beginn dieser Rezension in einer rechtshistorischen Fachzeitschrift angemerkt. Was dieser Band allerdings bietet, sind äußerst vielschichtige und differenzierende Perspektiven auf einen Gegenstand, der in der Rechtsgeschichte bislang nicht nur, aber vor allem auf seine Bedeutung im europäischen Kontext hin erforscht wurde. ...
Jed Kronckes The Futility of Law and Development – China and the Dangers of Exporting American Law ist ein Buch über das rechtliche Sendungsbewusstsein der Vereinigten Staaten vom neunzehnten bis zur Mitte des zwanzigsten Jahrhunderts. Jürgen Osterhammel verwendete den Begriff des Sendungsbewusstseins, um den Kern der Zivilisierungsmissionen in dieser Zeit zu beschreiben. Der bestehe in der "Selbstbeauftragung damit, die eigenen Normen und Institutionen an andere heranzutragen oder gar ihre Übernahme mit mehr oder weniger sanftem Druck zu erzwingen". ...
High precision measurement of the radiative capture cross section of 238U at the n_TOF CERN facility
(2017)
The importance of improving the accuracy on the capture cross-section of 238U has been addressed by the Nuclear Energy Agency, since its uncertainty significantly affects the uncertainties of key design parameters for both fast and thermal nuclear reactors. Within the 7th framework programme ANDES of the European Commission three different measurements have been carried out with the aim of providing the 238U(n,γ) cross-section with an accuracy which varies from 1 to 5%, depending on the energy range. Hereby the final results of the measurement performed at the n_TOF CERN facility in a wide energy range from 1 eV to 700 keV will be presented.
The aim of this work is to provide a precise and accurate measurement of the 238U(n,γ) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238U(n,γ) measurements performed at the n_TOF CERN facility are presented in this work. The γ-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.