0000000001314927

AUTHOR

J.v. Kratz

showing 6 related works from this author

Dipole excitations of neutron-proton asymmetric nuclei

2004

Dipole excitations of unstable short-lived nuclei has been investigated experimentally by utilizing the electromagnetic-excitation process with high-energy secondary beams. From an exclusive measurement of the neutron-decay channels, differential cross sections with respect to excitation energy, which are directly related to the photo-absorption cross section and accordingly to the dipole-strength function, have been derived. Light neutron-rich nuclei in the mass range fromA = 11 toA = 23 with mass-over-charge ratios up toA/Z≈ 2.8 have been investigated systematically. Much in contrast to stable nuclei, low-lying dipole excitations well below the giant dipole resonance region have been obse…

PhysicsNuclear and High Energy PhysicsDipoleBond dipole momentNuclear TheoryTransition dipole momentNeutronSum rule in quantum mechanicsElectric dipole transitionAtomic physicsNuclear ExperimentNucleonExcitationNuclear Physics A
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First Study on Nihonium (Nh, Element 113) Chemistry at TASCA

2021

Frontiers in Chemistry 9, 753738 (2021). doi:10.3389/fchem.2021.753738

Shell (structure)Analytical chemistrychemistry.chemical_elementSuperheavy Elementselement 113gas phase chromatographyAtomic orbitalatomifysiikkaTASCAReactivity (chemistry)QD1-999Original ResearchIsotopeGeneral Chemistry540superheavy elementkemialliset ominaisuudetChemistryFleroviumsuperheavy elementsUnpaired electronchemistrynihoniumddc:540physical preseparationVolatility (chemistry)
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Spectroscopic Tools Applied to Element Z = 115 Decay Chains

2014

Nuclides that are considered to be isotopes of element Z = 115 were produced in the reaction 48Ca + 243Am at the GSI Helmholtzzentrum für Schwerionenforschung Darmstadt. The detector setup TASISpec was used. It was mounted behind the gas-filled separator TASCA. Thirty correlated α-decay chains were found, and the energies of the particles were determined with high precision. Two important spectroscopic aspects of the offline data analysis are discussed in detail: the handling of digitized preamplified signals from the silicon strip detectors, and the energy reconstruction of particles escaping to upstream detectors relying on pixel-by-pixel dead-layer thicknesses.

PhysicsIsotopeSiliconPhysics::Instrumentation and DetectorsPhysicsQC1-999DetectorSeparator (oil production)Mechanical engineeringchemistry.chemical_element7. Clean energyNuclear physicschemistryPhysical SciencesSubatomic Physicsddc:530Decay chainNuclideNuclear ExperimentLine (formation)EPJ Web of Conferences
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On the adsorption and reactivity of element 114, flerovium

2022

Flerovium (Fl, element 114) is the heaviest element chemically studied so far. To date, its interaction with gold was investigated in two gas-solid chromatography experiments, which reported two different types of interaction, however, each based on the level of a few registered atoms only. Whereas noble-gas-like properties were suggested from the first experiment, the second one pointed at a volatile-metal-like character. Here, we present further experimental data on adsorption studies of Fl on silicon oxide and gold surfaces, accounting for the inhomogeneous nature of the surface, as it was used in the experiment and analyzed as part of the reported studies. We confirm that Fl is highly v…

superheavy elementsatomitatomifysiikkaadsorptionradiokemiaalkuaineetradiochemistrynuclear chemistryadsorptiorecoil separatorselement 114kemialliset ominaisuudet
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"Table 2" of "Few neutron removal from U-238 at relativistic energies"

1997

Uranium fragmentation.

inorganic chemicalsU238 CU --> U236 XU238 PB --> U235 XU238 CU --> U235 XU238 PB --> U236 XU238 CU --> U234 XU238 PB --> U234 XIntegrated Cross Sectiontechnology industry and agricultureCross SectionU238 AL --> U236 XSIGcomplex mixturesU238 AL --> U237 XU238 PB --> U237 XU238 CU --> U237 XNUCLEUS NUCLEUS --> U234 XInclusiveU238 AL --> U234 XU238 AL --> U235 XNUCLEUS NUCLEUS --> U237 XNUCLEUS NUCLEUS --> U236 XNUCLEUS NUCLEUS --> U235 X
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"Table 1" of "Few neutron removal from U-238 at relativistic energies"

1997

Uranium fragmentation.

inorganic chemicalsU238 CU --> U236 XU238 CU --> U235 XU238 CU --> U234 XCross Sectioncomplex mixturesU238 CU --> U237 XNUCLEUS NUCLEUS --> U234 XInclusiveNUCLEUS NUCLEUS --> U233 XNUCLEUS NUCLEUS --> U237 XNUCLEUS NUCLEUS --> U236 XNUCLEUS NUCLEUS --> U235 XU238 PB --> U235 XU238 PB --> U236 XU238 PB --> U233 XU238 PB --> U234 XIntegrated Cross Sectiontechnology industry and agricultureU238 AL --> U236 XSIGU238 AL --> U237 XU238 PB --> U237 XU238 AL --> U233 XU238 AL --> U234 XU238 AL --> U235 X
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