6533b836fe1ef96bd12a0b06
RESEARCH PRODUCT
Photoneutron cross sections for unstable neutron-rich oxygen isotopes.
K. SümmererG. MünzenbergR. HolzmannP. ReiterU. Datta PramanikJ. V. KratzK. BoretzkyE. LubkiewiczW. WalusA. KleinböhlJ. CubH. EmlingThomas AumannW. DostalY. LeifelsS. WanTh. W. ElzeC. ScheidenbergerM. HellstrChristian SchlegelM. RejmundE. WajdaHans GeisselHerbert A. SimonNaohito IwasaA. LeistenschneiderA. GrünschloßS. IlievskiJoachim StrothD. CortinaR. KulessaM. Kasparsubject
Nuclear reactionPhysicsDipoleScatteringNuclear TheoryHadronGeneral Physics and AstronomyNeutronInelastic scatteringAtomic physicsNuclear ExperimentNucleonExcitationdescription
The dipole response of stable and unstable neutron-rich oxygen nuclei of masses A = 17 to A = 22 has been investigated experimentally utilizing electromagnetic excitation in heavy-ion collisions at beam energies about 600 MeV/nucleon. A kinematically complete measurement of the neutron decay channel in inelastic scattering of the secondary beam projectiles from a Pb target was performed. Differential electromagnetic excitation cross sections d sigma/dE were derived up to 30 MeV excitation energy. In contrast to stable nuclei, the deduced dipole strength distribution appears to be strongly fragmented and systematically exhibits a considerable fraction of low-lying strength.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-12-19 | Physical review letters |