DIF/DPTA/SPN/LMED
Nuclear data needs Understanding basic reaction mechanism between particles and nuclei Astrophysical applications (Age of the Galaxy, element abundancies …) Existing or future nuclear reactors simulations Medical applications, oil well lodging, wastes transmutation … Finite number of experimental data (price, safety or counting rates) Complete measurements restricted to low energies ( < 1 Me. V)
Content
1 st PART
Why and for whom ?
Content of an evaluated file
What is it used for ?
Too few experimental data
No experimental data
Incoherent experimental data
CRITICAL SPHERE SIMULATION
Bad evaluations
Partial evaluations
2 nd PART
How ?
Experimental data interpolation
Bayesian methods
Renormalisations
Cut and Paste
Nuclear Reaction Modeling
3 rd PART
Models sequence
Optical model
Optical Model
Two types of approaches Total cross sections
Phenomenologic optical model
![Phenomenologic optical model [ ]](https://present5.com/presentation/5e9fdb17354c0943c00f5cb88117ef08/image-31.jpg "Phenomenologic optical model [ ]")
Phenomenologic optical model [ ]
Phenomenologic optical model
Semi-microscopic optical model
Semi-microscopic optical model
Semi-microscopic optical model
Semi-microscopic optical model
0
Impact of coupled channels
Impact of coupled channels
Models sequence
Pre-equilibrium model
Evolution equation Emission cross section in channel c
Pre-equilibrium model
Pre-equilibrium model
Models sequence
=
D
b
E
Energy elongation
Energie V V elongation
Energy elongation
Energy elongation
Energy elongation
Neutron energy (Me. V) Neutron multiplicities
Model(s)
4 th PART
Few concrete examples
The (n, 2 n) odyssey
The (n, 2 n) odyssey
The (n, 2 n) odyssey
Europiums
Europiums
Impact of level densities
Impact of level densities
Impact of level densities
Energy V V elongation
Coupled channel impact
Microscopic pre-equilibrium ?
Microscopic level densities
Fully microscopic cross section
Fission fragments’ yields
Bibliography
Bibliography
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