0000000000211183

AUTHOR

A. Surowiec

showing 5 related works from this author

Invariant mass spectrum and α-n correlation function studied in the fragmentation of 6He on a carbon target

1998

13 pags, 5 figures.-- PACS nrs.: 24.60.−t; 25.70.Ef; 27.20.+n.

PhysicsNuclear and High Energy PhysicsReaction mechanismMomentum distributionsBreakupSpectral lineIon[PACS] Reactions induced by unstable nucleiBreakup reactions6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges]Fragmentation (mass spectrometry)Halo nucleiFragmentation mechanism[PACS] ResonancesSecondary radioactive beamsInvariant massNeutronHe-5He-6Invariant mass spectra[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19Atomic physicsGround stateExotic nucleiNuclear Physics A
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A large-area scintillating fibre detector for relativistic heavy ions

1998

Abstract A scintillating fibre detector for relativistic heavy ions with an active area of 50 × 50 cm 2 has been developed and was tested with various ion beams (1 ≤ Z ≤ 92). At count rates of up to 10 5 particles/s, the position resolution was found to be determined by the fibre width of 1 mm; depending on the nuclear charge of the beam, efficiencies between 89% and 100% and time resolutions between 800 and 200 ps (FWHM) were obtained.

Position sensitive photomultiplierPhysicsNuclear and High Energy PhysicsFull width at half maximumPosition resolutionDetectorScintillating fibreAtomic physicsInstrumentationEffective nuclear chargeBeam (structure)IonNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Continuum excitations in6He

1999

T. Aumann et al. ; 11 pags.; 6 figs.; 2 tabs. ; PACS number(s): 27.20.1n, 25.60.Gc, 25.70.De, 29.30.Hs

PhysicsNuclear and High Energy PhysicsAngular distributionContinuum (topology)Giant resonanceExcited stateQuantum mechanicsCoulomb excitationInelastic scatteringAtomic physicsIsotopes of heliumResonance (particle physics)Physical Review C
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Invariant-mass spectroscopy of $^{10}$Li and $^{11}$Li

1997

Break-up of secondary Li-11 ion beams (280 MeV/nucleon) on C and Pb targets into Li-9 and neutrons is studied experimentally. Cross sections and neutron multiplicity distributions are obtained, characterizing different reaction mechanisms. Invariant-mass spectroscopy for Li-11 and Li-10 is performed. The E1 strength distribution, deduced from electromagnetic excitation of Li-11 up to an excitation energy of 4 MeV comprises similar to 8% of the Thomas-Reiche-Kuhn energy-weighted sumrule strength. Two low-lying resonance-like structures are observed for Li-10 at decay energies of 0.21(5) and 0.62(10) MeV, the former one carrying 26(10)% of the strength and likely to be associated with an s-wa…

PhysicsNuclear reactionNuclear and High Energy Physics010308 nuclear & particles physics[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear Theory[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciencesIon0103 physical sciencesInvariant massNeutronAtomic physicsMultiplicity (chemistry)Nuclear Experiment010306 general physicsNucleonSpectroscopyExcitationNuclear Physics
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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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