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Title: One-Neutron Removal Measurement Reveals {sup 24}O as a New Doubly Magic Nucleus

The first measurement of the momentum distribution for one-neutron removal from {sup 24}O at 920A MeV performed at GSI, Darmstadt is reported. The observed distribution has a width (FWHM) of 99{+-}4 MeV/c in the projectile rest frame and a one-neutron removal cross section of 63{+-}7 mb. The results are well explained with a nearly pure 2s{sub 1/2} neutron spectroscopic factor of 1.74{+-}0.19 within the eikonal model. This large s-wave probability shows a spherical shell closure thereby confirming earlier suggestions that {sup 24}O is a new doubly magic nucleus.
Authors:
;  [1] ; ; ; ; ; ; ; ; ; ; ; ;  [2] ; ; ;  [2] ;  [3] ; ;  [4] more »;  [5] « less
  1. Astronomy and Physics Department, Saint Mary's University, Halifax, NS B3H 3C3 (Canada)
  2. GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany)
  3. (Germany)
  4. Justus-Liebig University, 35392 Giessen (Germany)
  5. Universidad de Santiago de Compostela, E-15706 Santiago de Compostella (Spain) (and others)
Publication Date:
OSTI Identifier:
21180378
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 102; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.102.152501; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CROSS SECTIONS; EIKONAL APPROXIMATION; MAGIC NUCLEI; MEV RANGE 10-100; NEUTRONS; OXYGEN 24; PROBABILITY; S WAVES; SPECTROSCOPIC FACTORS; SPHERICAL CONFIGURATION