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

Journal Article · Fri Apr 17 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.152501· OSTI ID:21180378

Kanungo, R; Perro, C ^[1]; Nociforo, C; Aumann, T; Geissel, H; Gerl, J; Kindler, B; Litvinov, Y; Lommel, B; Mahata, K; Scheidenberger, C; Sun, B; Weick, H; Winkler, M ^[2]; Prochazka, A; Farinon, F; Knoebel, R ^[2]; Boutin, D; Lenske, H ^[3]; Cortina-Gil, D ^[4]

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1. Astronomy and Physics Department, Saint Mary's University, Halifax, NS B3H 3C3 (Canada)
2. GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany)
3. Justus-Liebig University, 35392 Giessen (Germany)
4. Universidad de Santiago de Compostela, E-15706 Santiago de Compostella (Spain)

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.

• OSTI ID: 21180378
• Journal Information: Physical Review Letters, Vol. 102, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.102.152501; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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