Spin dynamic tool developments and study regarding the Super-B project

International audience

Modeling the actinides with disordered local moments

A first-principles disordered local moment (DLM) picture within the local-spin-density and coherent potential approximations (LSDA+CPA) of the actinides is presented. The parameter free theory gives an accurate description of bond lengths and bulk modulus. The case of $\delta$-Pu is studied in particular and the calculated density of states is compared to data from photo-electron spectroscopy. The relation between the DLM description, the dynamical mean field approach and spin-polarized magnetically ordered modeling is discussed.Comment: 6 pages, 4 figure

Study of β-delayed charged particle emission of 11Li: Evidence of new decay channels

5 pags., 3 figs. -- 9th International Conference on Clustering Aspects of Nuclear Structure and Dynamics (CLUSTERS'07) 3–7 September 2007, Stratford upon Avon, UKThe break-up of the 18.2 MeV state in 11Be was studied in a 11Li β-decay experiment. We report here on the study of the dominating breakup channels involving na6He or 3n2α in the final state, with special emphasis dedicated in this contribution to the three-particle channel. The two emitted charged particles were detected in coincidence using a highly segmented experimental set-up. The observed experimental energy-vs-energy scatter plot indicates a sequential breakup where nuclei of mass 4, alpha particles, and mass 7, 7He, are involved. A Monte-Carlo simulation of the sequential channel, 11Be* → α + 7He → nα6He was performed and compared to the experimental data and to a simulation of the direct break-up of the 18.2 MeV state nα6He by phase space energy distribution. The energy-versus-energy plot are explained by the sequential simulation but not by the phase space simulation. © 2008 IOP Publishing Ltd

Rapid method of determination of sorption isotherms and water apparent diffusivity

International audienc

Effets de la conduite du séchage sur la qualité des pâtes alimentaires

2 tables 10 graph.National audienc

Modeling and control of a mixed-flow rice dryer with emphasis on breakage quality

The rice kernel is modelled as a two water compartment system and as a whole concerning heat and quality. The external transfers are governed by Fick and Fourier laws. The compartmental approach is mainly used to render the internal resistance in the most efficient way on the computer. Mass transfer coefficients were adjusted with the help of constant condition drying kinetics. A primary validation of the model was observed when compared to experimental kinetics with transient phenomena. A secondary validation was done at the thick layer level. A simple PI controller with system linearization was designed and rested on the simulator. The latest results concern the simulation of a large scale semi-industrial dryer for both steady and transient states. The controller was tested successfully on the simulator. Results have shown a robust behaviour for such a non-linear system. On the other hand, performance is highly dependant upon the dryer setpoint. Previous work on corn dryers has shown that improving this performance wasn't realistic for practical reasons (e.g. lack of knowledge about the zeros of the system). The resulting model, in its two (steady and transient state) versions, is available as a cross-platform software and also on internet. The validity range for the model is 15-80 Celsius, 0-100% HR and 0-1 mis

Modelling of brown rice and limited-water cooking modes and its potential use for texture prediction

International audienc

Recent investigations for the production of a pure isomeric nuclear beam

International audienc