Concept

Demon core

Publications associées (8)

The COLIBRI experimental program in the CROCUS reactor: characterization of the fuel rods oscillator

Andreas Pautz, Vincent Pierre Lamirand, Mathieu Hursin, Carlo Fiorina, Oskari Ville Pakari, Pavel Frajtag, Daniel Godat, Axel Guy Marie Laureau, Adolfo Rais

The present article presents the mechanical characterization of the fuel rods oscillator developed for the purposes of the COLIBRI experimental program in CROCUS. COLIBRI aims at investigating the radiation noise related to fuel vibrations. The main motiva ...

2020

Thermodynamics, structure, and charge state of hydrogen-vacancy complexes in delta-plutonium

Michael Frederick Francis

Hydrogen-vacancy complexes can form in a material due to the exothermic binding of hydrogen atoms to vacancy sites. We explore the structure and electronic properties of hydrogen-vacancy complexes in delta-Pu using a density functional theory supercell app ...

American Physical Society2014

Stress-modulated composition in the vicinity of dislocations in nearly lattice matched AlxIn1-x N/GaN heterostructures: A possible explanation of defect insensitivity

Nicolas Grandjean, Jean-François Carlin, Marco Cantoni, Eric Feltin, Pierre Stadelmann, Anas Mouti, Jean-Luc Rouvière

Evidence of composition fluctuations around threading dislocations at scales ranging from atomic distances to tens of nanometers is provided by z-contrast imaging, strain measurement, and energy dispersive x-ray spectroscopy in AlxIn1-x N/GaN heterostructu ...

2011

Modern electron microscopy resolved in space, energy and time

Fabrizio Carbone

Recent pioneering experiments combining ultrafast lasers with electron-based technology demonstrated the possibility to obtain real-time information about chemical bonds and their dynamics during reactions and phase transformation. These techniques have be ...

2011

A benchmark on the calculation of kinetic parameters based on reactivity effect experiments in the CROCUS reactor

Rakesh Chawla

Measurements in the CROCUS reactor at EPFL, Lausanne, are reported for the critical water level and the inverse reactor period for several different sets of delayed supercritical conditions. The experimental configurations were also calculated by four diff ...

Elsevier2006

Decomposition analysis of reactivity effect predictions for modern LWR fuel

Filippo Tani

The increasing complexity and heterogeneity of modern light water reactor (LWR) fuel assemblies impose new challenges to current reactor physics codes in terms of maintaining and improving the quality of neutronics predictions for the core. In particular, ...

EPFL2006

Spontaneous assembly of subnanometre-ordered domains in the ligand shell of monolayer-protected nanoparticles

Francesco Stellacci

The properties of materials can be created and improved either by confining their dimensions in the nanoscale or by controlling their nanostructure. We have combined these two concepts, and here we describe a new class of nanostructured nanosized materials ...

2004

Epithermal inverse kinetic measurements and their interpretation using a two-group point-kinetic model

Rakesh Chawla, Tony Williams

Two of the methods that can be used for the measurement of the subcriticality of a multiplying system are the inverse kinetic (IK) and the pulsed neutron source (PNS) techniques. These methods depend considerably on correction factors and/or kinetic parame ...

ANS2000

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