Concept

Spent nuclear fuel

Related publications (168)

Pressure drop modeling and comparisons with experiments for single- and two-phase sodium flow

Rakesh Chawla, Konstantin Mikityuk, Aurélia Chenu

The thermal-hydraulic code TRACE is currently being extended at the Paul Scherrer Institute (PSI) for enabling the study of sodium-cooled fast reactor (SFR) core behavior during transients in which boiling is anticipated. An accurate prediction of pressure ...

Elsevier2011

Very fast light-induced degradation of a-Si:H/c-Si(100) interfaces

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf, Bénédicte Demaurex

Light-induced degradation (LID) of crystalline silicon (c-Si) surfaces passivated with hydrogenated amorphous silicon (a-Si:H) is investigated. The initial passivation decays on polished c-Si(100) surfaces on a time scale much faster than usually associate ...

2011

Tandem collimators for the JET tangential gamma-ray spectrometer

Patrick Blanchard

The tangential gamma-ray spectrometer (TGRS) of the JET tokamak fusion facility is an important diagnostics for investigating the fast particle evolution. A well defined field of view for the TGRS diagnostics is essential for its proper operation and this ...

Elsevier2011

Void reactivity decomposition for the Sodium-cooled Fast Reactor in equilibrium fuel cycle

Rakesh Chawla, Konstantin Mikityuk, Jiri Krepel, Kaichao Sun

The Sodium-cooled Fast Reactor (SFR) is one of the most promising Generation IV systems with many advantages, but has one dominating neutronic drawback - a positive sodium void reactivity. The aim of this study is to develop and apply a methodology, which ...

Elsevier2011

Freshly induced short-lived gamma-ray activity as a measure of fission rates in lightly re-irradiated spent fuel

Rakesh Chawla, Hanna Kröhnert

A new measurement technique has been developed to determine fission rates in burnt fuel following re-irradiation in a zero-power research reactor The development has been made in the frame of the LIFE@PROTEUS program at the Paul Scherrer Institute which ai ...

2010

Improvement of the Decay Heat Removal Characteristics of the Generation IV Gas-cooled Fast Reactor

Aaron Simon Epiney

Gas cooling in nuclear power plants (NPPs) has a long history, the corresponding reactor types developed in France, the UK and the US having been thermal neutron-spectrum systems using graphite as the moderator. The majority of NPPs worldwide, however, are ...

EPFL2010

Nuclear material investigations by advanced analytical techniques

Manuel Alexandre Pouchon, Johannes Bertsch, Goutam Kuri

Advanced analytical techniques have been used to characterize nuclear materials at the Paul Scherrer Institute during the last decade. The analysed materials ranged from reactor pressure vessel (RPV) steels, Zircaloy claddings to fuel samples. The processe ...

Elsevier2010

Heavy-gas injection in the Generation IV gas-cooled fast reactor for improved decay heat removal under depressurized conditions

Rakesh Chawla, Konstantin Mikityuk, Aaron Simon Epiney

Decay heat removal is a key safety and design issue for the Generation IV gas (helium)-cooled fast reactor. This paper investigates the natural convection capability of the dedicated DHR loops under depressurized conditions while injecting a heavy gas into ...

Elsevier2010

Medium resolution X-Ray Computed Tomography of hollow cylindrical samples of Boom Clay

Laurent Gastaldo, Vincent Labiouse, Shuang You, Laura Vigne

Laboratory experiments carried out at the LMR-EPFL on thick-walled hollow cylindrical samples aim at modelling at small-scale conditions similar to those that will be experienced by host rocks around disposal galleries for heat emitting radioactive waste. ...

CRC Press/Balkema2010

Observation of Bs0 -> Ds()+ Ds()- using e+e- collisions and a determination of the Bs-Bsbar width difference Delta Gamma_s

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Vladislav Balagura, Jean Wicht, Remi Léandre Albert Louvot, Ji Hyun Kim

We have made the first observation of B-s(0) -> D-s(()()+) D-s(()()-) decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Y(5S) resonance. The branching fractions are measured to be B(B-s(0) -> Ds+Ds-) = (1.03(-0.32-0.25)(+0. ...

2010

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.