0000000000076880

AUTHOR

Karin Markenroth

showing 11 related works from this author

Proton dripline studies at ISOLDE: 31Ar and 9C

2002

In this contribution examples of the application of new technologies to disentangle the mechanism of $\beta$-delayed multiparticle emission are given. In particular the mechanism of $\beta$2p-emission from $^{31}$Ar has been resolved and proved to be sequential, a preview of $^{9}$C-decay data is discussed.

Nuclear physicsPhysicsNuclear and High Energy PhysicsProtonNuclear Physics - Experiment
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Three-body correlations in electromagnetic dissociation of Borromean nuclei: The 6He case

2005

20 pages, 2 tables, 9 figures, 1 appendix.-- PACS nrs.: 25.60.-t; 27.20.+n; 25.70.De; 25.75.Gz.-- Printed version published Sep 5, 2005.

PhysicsNuclear and High Energy PhysicsParticle correlationsCoulomb excitationCoulomb excitationDissociation (chemistry)Coincidence[PACS] Reactions induced by unstable nucleiAmplitude6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges]Fragmentation (mass spectrometry)[PACS] Particle correlations and fluctuationsNeutronHe-6[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19Atomic physicsSeries expansionGround stateUnstable nucleiNuclear Physics A
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Systematic investigation of the drip-line nuclei 11Li and 14Be and their unbound subsystems 10Li and 13Be

2007

Fragmentation reactions in a carbon target with beams of 11Li and 14Be at relativistic energies have been studied in a kinematically complete experiment at the ALADIN-LAND setup at GSI. Excited states in 11Li and 14Be were obtained from the data in the inelastic channel. The measured cross sections with the core nucleus in the final state show that in the 14Be case core polarization plays an important role. In the one-neutron knockout channels the measured angular correlations between fragment and neutron are asymmetric, which demonstrates the presence of states with different parities in the 11Li and 14Be ground states. For 10Li a low-lying virtual s-state, a p-state and evidence for a d-s…

PhysicsNuclear physicsNuclear and High Energy PhysicsFragmentation (mass spectrometry)Excited stateHalo nucleusNeutronAtomic physicsNuclear ExperimentPolarization (waves)Ground stateNuclear Physics A
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New information on β-delayed neutron emission from Be-12, Be-14

1999

17 pages, 3 tables, 5 figures, 1 appendix.-- PACS nrs.: 23.40.Hc; 27.20.+n.

PhysicsNuclear and High Energy PhysicsLarge Hadron ColliderRadioactivity: Be-12 Be-14 (from 1 GeV p on UC target selective mass separation)Astrophysics::High Energy Astrophysical PhenomenaConfidence intervalNuclear physics6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges]Neutron long countersBe-12 Be-14 deduced P(n) values Be-14 deduced P(xn) valuesHigh Energy Physics::ExperimentNeutronMeasured βn nn time correlations[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19Nuclear ExperimentDelayed neutronRadioactive beam[PACS] Relation with nuclear matrix elements and nuclear structureBe-12 Be-14 (from 1 GeV p on UC target selective mass separation) [Radioactivity]
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Two- and three-body correlations: breakup of halo nuclei

2004

4 pages, 2 figures.

Nuclear physicsPhysicsNuclear and High Energy PhysicsSpinsCoincidentNuclear TheoryNeutronHaloNuclear ExperimentGround stateBreakup
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Crossing the dripline to11Nusing elastic resonance scattering

2000

The level structure of the unbound nucleus N-11 has been studied by C-10+p elastic resonance scattering in inverse geometry with the LISE3 spectrometer at GANIL, using a C-10 beam with an energy of 9.0 MeV/ nucleon. An additional measurement was done at the A1200 spectrometer at MSU. The excitation function above the C-10+p threshold has been determined up to 5 MeV. A potential-model analysis revealed three resonance states at energies 1.27(-0.05)(+0.18) MeV (Gamma = 1.44 +/- 0.2 MeV), 2.01(-0.05)(+0.15) MeV (Gamma = 0.84 +/- 0.2 MeV), and 3.75 +/- 0.05 MeV (Gamma = 0.60 +/- 0.05 MeV) with the spin-parity assignments I-pi=1/2+,1/2,-,5/2+, respectively. Hence, N-11 is shown to have a ground …

Excitation functionPhysicsNuclear and High Energy PhysicsSpectrometer010308 nuclear & particles physicsNuclear Theory01 natural sciencesResonance (particle physics)0103 physical sciencesPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsAtomic physicsNuclear Experiment010306 general physicsGround stateSpin (physics)NucleonSpectroscopyParity (mathematics)Physical Review C
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Light exotic isotopes: recent beam developments and physics applications at ISOLDE

2002

This paper is divided in three parts: (i) the measurement of yields and decay losses of Li and Be isotopes released from a thin foil tantalum target at the CERN/ISOLDE PS-Booster; (ii) results from beta-decay experiments on Be-12 and Be-14, an improved half-life of 21.49(3) ms has been obtained for Be-12; (iii) the beta-decay of C-9. An outline of the analysis procedure to determine the branching at high excitation energies is given. The ground-state branch has been determined to 54.1(15)%.

PhysicsNuclear and High Energy PhysicsLarge Hadron ColliderC-9Isotope[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex]Tantalumchemistry.chemical_element[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Beta-decayNuclear physicschemistryNuclear Physics - ExperimentAtomic physicsFOIL methodExcitation
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Searching for the 5H resonance in the t+n+n system

2003

19 pages, 7 figures, 2 tables, 2 appendices.-- PACS nrs.: 27.10.+h; 25.60.Gc.-- Printed version published Jul 28, 2003.

PhysicsNuclear reactionNuclear and High Energy PhysicsComparisons with previous resultsMeasured triton and neutron relative energy spectra energy and angular correlationsHyperspherical harmonic expansion analysisResonance[PACS] Properties of specific nuclei listed by mass ranges: A ≤ 5Nuclear Reactions C(6Hent) (6He2nt) E=240 MeV/nucleonNuclear physicsNuclear magnetic resonanceA ≤ 5 [[PACS] Properties of specific nuclei listed by mass ranges]45H deduced resonance features[PACS] Breakup and momentum distributionsNuclear Physics A
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Halo excitations in fragmentation of He at 240 MeV/u on carbon and lead targets

2000

Dissociation of a 240 MeV/u beam of He-6, incident on carbon and lead targets, has been studied in kinematically complete experiments to investigate low-lying excitation modes in the halo nucleus He-6. It is shown that alignment effects characterize the inelastic scattering and allow an unambiguous assignment of the spin of a narrow resonance observed in the excitation energy spectrum. The differential cross sections for the He-6 inelastic scattering on carbon and lead targets were deduced from the measured moments of the two neutrons and the a-particle. An analysis of these distributions shows that quadrupole and, possibly, monopole excitations characterize the hadronic interaction, while …

PhysicsNuclear and High Energy PhysicsFragmentation (mass spectrometry)QuadrupoleCoulombHalo nucleusNeutronAtomic physicsInelastic scatteringResonance (particle physics)ExcitationNuclear Physics A
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8He-6He: a comparative study of nuclear fragmentation reactions

2001

19 pages, 3 tables, 6 figures.-- PACS nrs.: 27.20.+n; 24.70.+s; 25.06.-t.-- Available online Dec 4, 2000.

PhysicsNuclear and High Energy Physics[PACS] Polarization phenomena in reactionsResonanceHalo nucleusInelastic scatteringDissociation (chemistry)6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges]Fragmentation (mass spectrometry)NeutronAtomic physics[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19Ground stateExcitation
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He-8 - He-6: a comparative study of electromagnetic fragmentation reactions

2002

14 pages, 1 table, 2 figures.-- PACS nrs.:27.20.+n; 24.70.+.-- Available online Oct 8, 2001.

PhysicsNuclear and High Energy PhysicsNuclear Reactions: Pb(He-8xn He-6) E=227 MeV/nucleonNuclear TheoryHalo nucleusElectromagnetic fragmentationB(E1)Dissociation (chemistry)Nuclear physics6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges]Measured σ σ(Θ) σ(E)He-8 deduced resonance energyPb(He-6xnα) E=240 MeV/nucleonNeutronAtomic physics[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19Nuclear ExperimentPb(He-8xn He-6) E=227 MeV/nucleon [Nuclear Reactions]
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