One-neutron knockout of O-23

Research output: Contribution to journalArticle


Breakup reactions were used to study the ground-state configuration of the neutron-rich isotope 23O. The 22O fragments produced in one-nucleon removal from 23O at 938 MeV/nucleon in a carbon target were detected in coincidence with de-exciting γ rays, allowing to discern between 22O ground-state and excited-states contributions. From the comparison of exclusive experimental momentum distributions for the one-neutron removal channel to theoretical momentum distributions calculated in an Eikonal model for the knockout process, and spin and parity assignment of Iπ = 1/2+ was deduced for the 23O ground state. This result solved the existent experimental discrepancy.


  • D Cortina-Gil
  • J Fernandez-Vazquez
  • T Aumann
  • T Baumann
  • J Benlliure
  • M J G Borge
  • L V Chulkov
  • U D Pramanik
  • C Forssen
  • L M Fraile
  • H Geissel
  • J Gerl
  • F Hammache
  • K Itahashi
  • R Janik
  • B Jonson
  • S Mandal
  • M Meister
  • M Mocko
  • G Münzenberg
  • T Ohtsubo
  • A Ozawa
  • Y Prezado
  • V Pribora
  • K Riisager
  • H Scheit
  • R Schneider
  • G Schrieder
  • H Simon
  • B Sitar
  • A Stolz
  • P Strmen
  • K Sümmerer
  • I Szarka
  • H Weick
External organisations
  • Chalmers University of Technology
Original languageEnglish
Pages (from-to)343-346
JournalEuropean Physical Journal A. Hadrons and Nuclei
Issue numberSuppl. 1
Publication statusPublished - 2005
Publication categoryResearch
Externally publishedYes