Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.132502
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Funding
- Russian Foundation for Basic Research (RFBR) [12-02-01115-a]
- Spanish research agency CICYT [FPA2009-07387]
- Helmholtz Alliance EMMI, HIC
- GSI-TU Darmstadt
- BMBF [05P12RDFN8]
- STFC [ST/J000108/1, NuSTAR, ST/G000727/1, ST/J000094/1, 2014 STFC Nuclear Physics CG] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G000727/1, ST/J000108/1, NuSTAR, 2014 STFC Nuclear Physics CG, ST/G000662/1, ST/J000094/1] Funding Source: researchfish
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We report on the first observation of the unbound proton-rich nucleus Ne-15. Its ground state and first excited state were populated in two-neutron knockout reactions from a beam of 500 MeV/u Ne-17. The Ne-15 ground state is found to be unbound by 2.522(66) MeV. The decay proceeds directly to O-13 with simultaneous two-proton emission. No evidence for sequential decay via the energetically allowed 2(-) and 1(-) states in F-14 is observed. The Ne-15 ground state is shown to have a strong configuration with two protons in the (sd) shell around O-13 with a 63(5)% (1s(1/2))(2) component.
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