One-neutron knockout of 23O.

Authors :: Cortina-Gil, D.
Fernandez-Vazquez, J.
Aumann, T.
Baumann, T.
Benlliure, J.
Borge, M. J. G.
Chulkov, L. V.
Datta Pramanik, U.
Forssén, C.
Fraile, L. M.
Geissel, H.
Gerl, J.
Hammache, F.
Itahashi, K.
Janik, R.
Jonson, B.
Mandal, S.
Markenroth, K.
Meister, M.
Mocko, M.
Source :: European Physical Journal A -- Hadrons & Nuclei. Aug2005 Supplement 1, Vol. 25, p343-346. 4p.
Publication Year :: 2005
Abstract: 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. [ABSTRACT FROM AUTHOR]