1 / 16

Antiprotons as Probes for Nuclear Structure Investigations of Exotic Nuclei

Antiprotons as Probes for Nuclear Structure Investigations of Exotic Nuclei. H. Lenske Institut für Theoretische Physik, U. Giessen. Neutron Skins in Exotic Nuclei Antiproton-Nucleus Interactions Elastic Scattering Nuclear Radii from Absorption Cross Sections

kasimir-harvey
Download Presentation

Antiprotons as Probes for Nuclear Structure Investigations of Exotic Nuclei

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Antiprotons as Probes for Nuclear Structure Investigations of Exotic Nuclei H. Lenske Institut für Theoretische Physik, U. Giessen • Neutron Skins in Exotic Nuclei • Antiproton-Nucleus Interactions • Elastic Scattering • Nuclear Radii from Absorption Cross Sections • Screening of Protons in Neutron-rich Nuclei • Outlook

  2. Neutron Skins in Ni and Sn Isotopes Neutron Skins and PDR Strength in Sn Isotopes a4=32MeV a4=26MeV F. Hofmann et al., PRC64 (2001); N. Tsoneva. H.L., PLB586 (2004) and PRC (2007)

  3. Measuring Neutron Skins on Isotopic Chains (Ni,Sn…): p + A Absorption@FAIR: the AIC Proposal P. Kienle, NMB 214 (2004) and AIC@FAIR Proposal H.L., P. Kienle, Phys.Lett. B647 (2007) 82-87

  4. Antiproton-Nucleon Annihilation

  5. The antiproton-Nucleon Interaction

  6. The antiproton-Nucleus Interaction • Antiproton+A scattering: • Free Space pN T-Matrix • Nuclear Structure Input: HFB p and n Densities • optical Potential inImpulse or t Approximation

  7. Antiproton+Nucleus Interactions:Elastic Scattering

  8. pA Scattering: Optical Potential and Absorption Cross Section From The Continuity Equation: Eikonal Approximation:

  9. Antiproton Absorption on 58,78Ni: The Monopole Annihilation Kernel and the Nuclear Density

  10. Probing Nuclear Radii by Antiprotons • increasing <r2> • from proton to neutron skin • neutron skins up to 0.6 fm • charge radii by e- scattering • scaling of sabs ~ <r2> • energy independent slope • convergence of magnitude

  11. Measuring Neutron Skins on Isotopic Chains (Ni,Sn…): p + A Absorption on protons and neutrons H.L., P. Kienle, Phys.Lett. B647 (2007) 82-87

  12. Antiproton Annihilation on Ni-Isotopes: Scaling of sabs

  13. Q1: Antiproton+N Absorption: Isospin Symmetry

  14. Q2: Peripheral Antiproton Annihilation on a Nucleus:

  15. Differential Antiproton Annihilation on a Nucleus:

  16. Summary and Outlook • Microscopic Approach to Antiproton-Nucleus Interactions • Antiprotons as a Probe for Nuclear Skins • Screening of the Core Protons in neutron-rich Nuclei • Exclusive Processes: Studies of A  A-1 Reactions • Multi-Pion and YY Production • Antiproton In-Medium Interactions: • Test of G-parity for antiproton-N interactions, • Study of dispersive self-energies Together with: Nadia Tsoneva, Urnaa Badarch, P. Kienle Antiproton Ion Collider (AIC) Collaboration @ FAIR

More Related