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Nuclear Reactions as a Tool for Structure Studies of Exotic Nuclei

Nuclear Reactions as a Tool for Structure Studies of Exotic Nuclei. H. Lenske Institut für Theoretische Physik U. Giessen. Low Energy Transfer Reactions Charge Exchange Reactions Fano-Resonances in Exotic Nuclei (Antiprotons as Probes for Neutron Skins) Summary and Outlook.

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Nuclear Reactions as a Tool for Structure Studies of Exotic Nuclei

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  1. Nuclear Reactions as a Tool for Structure Studies of Exotic Nuclei H. Lenske Institut für Theoretische Physik U. Giessen • Low Energy Transfer Reactions • Charge Exchange Reactions • Fano-Resonances in Exotic Nuclei • (Antiprotons as Probes for Neutron Skins) • Summary and Outlook

  2. Extraction and Extrapolation of Spectral Information, Location of Driplines, b-Decay, Reaction Rates … : Reaction Theory!

  3. Transfer Reactions with Secondary Beams: Pickup/Stripping in Inverse Kinematics • Direct Reaction • Suppression of Compound Reactions • Particle Detection plus gray Detection • Spectral Distributions, Continuum H.L., G.Schrieder Eur.Phys.J. A2 (1998) 41

  4. Low Energy Transfer Reactions with Exotic Nuclei

  5. The 9Li+d  8Li+t Reaction @ REX-ISOLDE Data Tlab=2.36 AMeV H.Jeppesen et al. , PLB (2006)

  6. The 9Li+d  8Li+t Reaction @ REX-ISOLDE Theory and Data Tlab=2.36 AMeV C2S=0.89 C2S=0.34 C2S=1.33 H. Jeppesen et al., PLB (2006)

  7. Theory: 9Li+d  10Li+p @ Tlab=2 AMeV 10Li  9Li + n: Spectroscopy in the Continuum

  8. Reaction Mechanism of 2n-Transfer

  9. Two-Neutron Transfer Reactions

  10. 11B(7Li,7Be)11Be Reaction at Tlab=57 MeV Experiment by the Catania Group at IPN-Orsay Tandem Lab

  11. b and CE Response by Continuum QRPA: Dyson Equation and Multipole Response Functions

  12. QRPA Fermi-type Beta-Response

  13. QRPA GT-type Beta-Response

  14. DWBA-Analysis of 11B(7Li,7Be)11Be at Tlab=57MeV 11B(7Li,7Be)11Be(1/2+,g.s.) 11B(7Li,7Be)11Be(5/2+,1.77) F. Cappuzzello, H.L. et al, NPA 739 (2004) 30

  15. 11B(7Li,7Be)11Be Reaction at Tlab=57 MeV: NN Interactions and Cross Section

  16. The Neutron Halo in 19C: Transition from Mean-Field to Correlation Dynamics The DCP picture: Binding by Polarization Potential The s.p. shell model picture: Static Potential H.L.,J. Prog.Part.Nucl. 561 (2003);C. Nociforo, H.L., Nucl.Phys (2006)

  17. Shape and Size of 19C and 16O 19C18C+n at Tlab=910AMeV on a C-Target: Gtheo =69MeV/c Gexp =68±3MeV/c s(-1n,theo)=192mb s(-1n,exp )=233±51mb z (x,y) √<r2>(1/2+) = 5.34 fm S = 0.40 √<r2>(1/2-) = 2.96 fm S = 0.97

  18. Correlation Dynamics in the Continuum: Fano-Resonances in 15C G~60…140keV S. Orrigo, H.L., PLB (2006) in print

  19. Summary and Outlook • Nuclear Structure  Nuclear Reactions • Reaction Theory far off Stability • Reaction Dynamics • Elastic Channels  Optical Potentials • New Phenomena: Fano Resonances … • Continuum Dynamics • to be addressed: optical Potentials, Transition Form Factors, Reactions at Relativistic Energies (FAIR) Contributors: Sonja Orrigo, Nadia Tsoneva, Chiara Nociforo, F. Cappuzzello, C. Keil

  20. The Binding Energy of Ni-Isotopes: HFB Binding Energies Non-relativistic HFB Calculations (D3Y G-Matrix: DME with 3-body forces)

  21. Measuring Neutron Skins along Isotopic Chains (Ni,Sn…): p + A Absorption at FAIR – AIC Proposal P. Kienle, NMB 214 (2004) H.L., P. Kienle, nucl-th/0502065; PLB (2006)

  22. Measuring Neutron Skins (Ni,Sn…): Antiproton Absorption on Exotic Nuclei H.L., P. Kienle, PLB (2006); nucl-th/0502065

  23. (7Li,7Be) CE X-Sections and Beta-Response

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