Investigation of the nuclear matter distribution of 56Ni by elastic proton scattering in inverse kinematics

For The Exl Collaboration

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

We have measured the nuclear-matter distribution of the doubly-magic N = Z nucleus 56Ni by investigating elastic proton scattering in inverse kinematics. The radioactive beam of 56Ni was injected and stored in the experimental storage ring (ESR, GSI) and interacted with an internal hydrogen gas-jet target. The high revolution frequency of the ions in the ring enabled a high luminosity, despite the low density of the target being used. This way, measurements at very low momentum transfers became possible. By measuring the energy and the scattering angle of the recoiling protons, we were able to separate the elastic reaction channel from inelastic scattering to the first excited state of 56Ni and deduced the differential cross section of 56Ni Ni. The data were analyzed within the framework of the Glauber multiple-scattering theory in order to extract the nuclear-matter radius and radial matter distribution of 56Ni. Parameterizing the matter distribution with the phenomenological Symmetrized Fermi distribution, a preliminary value of 3.5 fm for the rms matter radius was deduced. This experiment was part of an EXL (EXotic nuclei studied in Light-ion induced reactions at storage rings) campaign at GSI in 2012 and was the first successful investigation of nuclear reactions with a stored radioactive beam ever.

Original languageEnglish
Article number014005
JournalPhysica Scripta
Volume2015
Issue numberT166
DOIs
Publication statusPublished - Nov 1 2015
Event9th International Conference on Nuclear Physics at Storage Rings, STORI 2014 - Sankt Goar, Germany
Duration: Sep 29 2014Oct 3 2014

Keywords

  • Ni
  • direct reactions
  • elastic proton scattering
  • in-ring experiments
  • nuclear-matter distribution
  • radioactive beams

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

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