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M. Avrigeanu 1 , W. von Oertzen 2 , U. Fischer 3 , and V. Avrigeanu 1

Association EURATOM - MEdC. EFF/DOC-907. Calculation of D-Li cross sections for energies up to 50 MeV using realistic nucleon-nucleon interactions. M. Avrigeanu 1 , W. von Oertzen 2 , U. Fischer 3 , and V. Avrigeanu 1.

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M. Avrigeanu 1 , W. von Oertzen 2 , U. Fischer 3 , and V. Avrigeanu 1

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  1. Association EURATOM - MEdC EFF/DOC-907 Calculation of D-Li cross sections for energies up to 50 MeV using realistic nucleon-nucleon interactions M. Avrigeanu1, W. von Oertzen2, U. Fischer3, and V. Avrigeanu1 1EURATOM-MEC Fusion Association, “Horia Hulubei” National Institute for Physics and Nuclear Engineering, P.O.Box MG-6, Bucharest, Romania 2 Freie Universität Berlin, Fachbereich Physics, Arnimallee 14, 14195 Berlin, and Hahn-Meitner-Institut, Glienicker Strasse 100, 14109 Berlin, Germany 3 Institut fur Reaktorsicherheit, Forschungszentrum Karlsruhe GmbH, Karlsruhe, Germany EFF Meeting, NEA-DB, 24.11.2004

  2. OUTLINE ND2001 # 159 ( 26 Sept.- 1 Oct. 2004 ) • Optical Potential - key ingredient of cross-sections calculations • NO GLOBAL OPTICAL POTENTIAL (OP) for d + Nucleus (A<27) • Deuterium-Lithium cross section calculations for energies up to 50 MeV byusing realistic nucleon-nucleon interaction • Calculations of microscopic VR optical potential for d+6,7Li interaction • WD and VSO components: local parameters based on data description • Average parameter sets • Full phenomenological OP for d+6,7Li interactions up to 50 MeV • Local parameter sets based on experimental data description - Average parameter sets for d+6,7Li up to E=50 MeV • Coupled Reaction Channels calculations for elastic α-transfer TW3/, TW4/TTMI-003/D4 EFF Meeting, NEA-DB, 24.11.2004

  3. Nuclear Model Calculations Phys. Rev. C 62 (2000) 017001 Nucl. Phys. A693 (2001) 616 Eur. Phys. J. A12 (2001) 399 Nucl. Phys. A723 (2003) 104 • DFFOLD - double folding method • SCAT2[O. Bersillon] • pure elastic scattering OP analysis • FRESCO-2003[I.J. Thompson] • Coupled Reaction Channel (CRC) calculation • d + 6Ligs 6Li3+ • 6Ligs + d 6Li3+ EFF Meeting, NEA-DB, 24.11.2004

  4. Microscopic Real Optical Potential EFF Meeting, NEA-DB, 24.11.2004

  5. Density Distributions EFF Meeting, NEA-DB, 24.11.2004

  6. Approximations EFF Meeting, NEA-DB, 24.11.2004

  7. U(E,r) EFF Meeting, NEA-DB, 24.11.2004

  8. Imaginary and spin-orbit potential parameters EFF Meeting, NEA-DB, 24.11.2004

  9. 6Li(d,d0)6Li microscopic angular distributions EFF Meeting, NEA-DB, 24.11.2004

  10. 7Li(d,d0)7Li microscopic angular distributions EFF Meeting, NEA-DB, 24.11.2004

  11. microscopic optical potentialanalysis: • Vso depths values - higher than typical needed to describe the backward angular-distributions enhancement • 6,7Linucleispecific structure • additional contributions to elastic scattering ? • phenomenological optical potentialanalysis: [instead of normalization constant for UDF which may hide some peculiarities of the interaction process] EFF Meeting, NEA-DB, 24.11.2004

  12. 6Li(d,d0)6Li phenomenological angular distributions EFF Meeting, NEA-DB, 24.11.2004

  13. 7Li(d,d0)7Li phenomenological angular distributions EFF Meeting, NEA-DB, 24.11.2004

  14. Phenomenological OMP parameters EFF Meeting, NEA-DB, 24.11.2004

  15. Real & imaginary OP volume integrals EFF Meeting, NEA-DB, 24.11.2004

  16. Comparison of global OMP predictions for 6Li(d,d0)6Li EFF Meeting, NEA-DB, 24.11.2004

  17. Comparison of global OMP predictions for 7Li(d,d0)7Li EFF Meeting, NEA-DB, 24.11.2004

  18. 6,7Lispecific structure • threshold breakup: (α+d) - 1.48 MeV (α+t) - 2.47 MeV • shape g.s. :spherical1+ deformed3/2–(βc=-0.16) • 1-st exc. st.:2.18 MeV 3+B(E2)=21.8 e2fm4 0.48MeV1/2-B(E2)=6.8 e2fm4 EFF Meeting, NEA-DB, 24.11.2004

  19. Comparison of 6,7Li(d,d0)6,7Li experimental data EFF Meeting, NEA-DB, 24.11.2004

  20. Coupled Reaction Channels calculations EFF Meeting, NEA-DB, 24.11.2004

  21. 7Li(d,d0)7Li low energy OP parameterization EFF Meeting, NEA-DB, 24.11.2004

  22. Comparison of global OMP predictions for low energy 7Li(d,d0)7Li EFF Meeting, NEA-DB, 24.11.2004

  23. Conclusions • Achievements • Appropriate optical model potentials: d+6Li (E<50 MeV) d+7Li (E<15 MeV) • Description of scattering data (E=14.7 & 19.6 MeV) by considering also elastic alpha transfer (CRC frame) • Elastic scattering at low energies near Coulomb barrier is described by phenomenological OMP with average VSO= -8 MeV • Completion • Enlarged analysis of d+7Li up to 50 MeV • Important request • Additional experimental data to guide and benchmark the model calculations at incident energies above 15 MeV EFF Meeting, NEA-DB, 24.11.2004

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