6533b820fe1ef96bd1279100
RESEARCH PRODUCT
Sensitivity of one-neutron knockout of halo nuclei to their nuclear structure
Pierre CapelChloë Hebbornsubject
HistoryNuclear TheoryContinuum (design consultancy)Nuclear TheoryFOS: Physical sciences01 natural sciencesEducationNuclear Theory (nucl-th)Nuclear physics0103 physical sciencesNeutronNuclear Experiment (nucl-ex)010306 general physicsWave functionNuclear ExperimentNuclear ExperimentPhysicsPhysique010308 nuclear & particles physicsNuclear structureObservableAstronomieBreakupComputer Science ApplicationsExcited stateHalodescription
Halo nuclei are located far from stability and exhibit a very peculiar structure. Due to their very short lifetime, they are often studied through reactions. Breakup reactions are of particular interest since their cross sections are large for these loosely-bound nuclei. Inclusive measurements of breakup--also called knockout reactions--have even higher statistics. In this proceeding, we study which nuclear-structure information can be inferred from the parallel-momentum distribution of the core of one-neutron halo nuclei after the knockout of its halo neutron. In particular, we analyse the influence of the ground-state wavefunction, the presence of excited states within the halo-nucleus spectrum and resonances in the core-neutron continuum. Our analysis shows that such observables are sensitive to the tail of the ground-state wavefunction. The presence of excited state decreases the breakup strength, and this flux is transferred to the inelastic-scattering channel. This indicates a conservation of the flux within each partial wave. We also show that the parallel-momentum distributions are insensitive to the existence of resonances within the continuum, they can thus be ignored in practice. This independence on the continuum argues that the parallel-momentum distributions are ideal observables to extract very precisely the ANCs of halo nuclei.
year | journal | country | edition | language |
---|---|---|---|---|
2019-11-04 |