Participants
Consultant's Meeting on
R-matrix Codes for Charged-particle Reactions in the Resolved-Resonance Region
Motivation
This meeting is a sequel of the Consultant's Meeting held from 7 to 9 December 2015 at the IAEA. The purpose is to gather R-matrix code developers from the various communities of practice (astrophysics, nuclear reactions, neutron data evaluation, etc.) to discuss their R-matrix codes capabilities, the physics and fitting procedures implemented, and how they can be used in evaluations of cross-section data for charged-particle-induced reactions in the Resolved-Resonance-Region (RRR).At this meeting we shall review the progress made so far and continue the discussions on the following issues:
- R-matrix theory (Angular distributions of decay gammas (i.e. residual polarization), Particle polarization (incoming, exit), Relativistic kinematics, Alternate R-matrix forms (Brune, Holcomb), S-matrix poles (complex), Unitarity, Unresolved-resonance region? (URR), Fits above 3-body thresholds, Low-energy predictions( Thermal neutron scattering, Astrophysical S-factors))
- Meanings of Approximations
- Using experimental data
- Fitting procedures
- Covariances
- Code bases
- Data formats
- Ferdinand: translation between R-matrix-code formats: ENDF, Fresco, AZURE, HYRMA
- Testing transformations and Ferdinand results (n + 16O, p + 27Al, others)
- Manpower for Fitting Reactions
- Publication of evaluations
- User requirements
- Allocation of effort
Agenda
The provisional Agenda is available here.
Report
The summary report is available as INDC(NDS)-0726.
Presentations
| # | Author | Title | Link |
| 1 | R.J. deBoer | R-matrix needs in Nuclear Astrophysics | |
| 2 | M. Paris | A Modern Theoretical Approach to the R-matrix and the Coming EDA6 Los Alamos Implementation | |
| 3 | I.J. Thompson | Theory Tools for R-matrix Fittng | |
| 4 | G. Arbanas | Generalized Reich-Moore R-matrix Approximation | |
| 5 | G. Arbanas | SAMMY Modernization | |
| 6 | Z. Chen | A Global Evaluation for 7Li system | |
| 7 | Z. Chen | Astrophysical S factor and Reaction Rate of 12C (alpha, gamma) 16O Calculatted with Reduced R-matrix Theory | |
| 8 | T. Srdinko | Adaptive R-matrix Approach for Light Nuclei | |
| 9 | S. Kunieda | Recent Progresses of/with the AMUR Code | |
| 10 | M.T. Pigni | Uncertainty Quantification in (a,n) Neutron Source Calculations in an Oxide Matrix |