Using the ARGUS detector at the e+e storage ring DORIS II, we have measured the Michel parameters , , and for ! l  decays in -pair events produced at center of mass energies in the region of the resonances. Using ! as spin analyzing tags, we nd e = 0:68 0:04 0:08, e = 1:12 0:20 0:09, e = 0:57 0:14 0:07, = 0:69 0:06 0:08, = 1:25 0:27 0:14 and = 0:72 0:18 0:10. In addition, we report the combine...

In the presence of nuisance parameters, we derive an explicit higher order asymptotic formula to compare the expected lengths of conndence intervals given by likelihood ratio statistics arising from the usual proole likelihood and various adjustments thereof. Highest posterior density regions, with approximate frequentist validity, are also included in the study.

For the stable and self-sufficient functioning of DEMO fusion reactor, one most important parameters that must be demonstrated is Tritium Breeding Ratio (TBR). The reliable assessment TBR with safety margins a matter reactor viability. uncertainty in neutronic simulations includes many different aspects such as due to simplification geometry models used, layout introduced calculations. last can...

For hypotheses of the type H0 : θ = θ0 vs H1 : θ 6= θ0 we demonstrate the equivalence of a Bayesian hypothesis test using a Bayes factor and the corresponding classical test, for a large class of models, which are detailed in the paper. In particular, we show that the role of the prior and critical region for the Bayes factor test is only to specify the type I error. This is their only role sin...

The China Experimental Fast Reactor (CEFR) is a small, sodium-cooled fast reactor with 20 MW(e) of power. Start-up tests the CEFR were performed from 2010 to 2011. Institute Atomic Energy made some neutronics start-up-test data available International Agency (IAEA) as part an international benchmarking exercise by distributing experimental interested organizations member states IAEA. This aims ...

Nowadays, the Aqueous Homogeneous Reactor (AHR) technology is under study for its use in production of medical isotopes. This has proven to be potentially advantageous this purpose due low cost, small critical mass, inherent passive safety, and simplified fuel handling, processing, purification characteristics. Among studies being carried out computational modeling simulation, which represents ...

Typical design basis accidents such as the control Rod Ejection Accident (REA) will need to be evaluated during safety analysis in support licensing processes for most of current Small Modular Reactors (SMRs) designs. In this paper a study related neutronic and thermal-hydraulic coupled modelling REA transient boron-free SMART-like core at different fidelity levels is presented. Two solutions h...