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RESEARCH PRODUCT

First Observation of the Unbound NucleusNe15

O.a. KiselevChristoph LangerMikhail V. ZhukovMarielle ChartierH. Alvarez-polC. Rodriguez-tajesHelmut WeickMattias LantzHåkan T JohanssonK. SümmererS. Beceiro-novoH. EmlingThomas AumannDieter H. H. HoffmannV. PaninF. WamersK. RiisagerA. ChatillonMatthias HeilWolfgang OttHans GeisselC. NociforoRalf PlagM. J. G. BorgeJ. MarganiecJoachim StrothY. AksyutinaG. SchriederC. KaragiannisThomas NilssonD. RossiK. BoretzkyR. KulessaK. MahataYuri A. LitvinovÁNgel PereaGöran Hugo NymanRoy Crawford LemmonC. WimmerO. ErshovaF. AksouhJ. V. KratzL. M. FraileRene ReifarthAchim RichterH. O. U. FynboL. V. ChulkovBjörn JonsonOlof TengbladT. Le BleisD. Cortina-gilD. GalavizStefanos PaschalisDeniz SavranC. MüntzHerbert A. SimonN. Kurz

subject

Physicsmedicine.anatomical_structureExcited stateNuclear TheorymedicineShell (structure)Physics::Accelerator PhysicsGeneral Physics and AstronomyAtomic physicsNuclear ExperimentGround stateNucleusBeam (structure)

description

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.

yearjournalcountryeditionlanguage
2014-04-04Physical Review Letters
https://doi.org/10.1103/physrevlett.112.132502