Search Results - (Author, Cooperation:B. Lommel)

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  1. 1
    Staff View
    Publication Date:
    2018-06-29
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    0556-2813
    Electronic ISSN:
    1089-490X
    Topics:
    Physics
    Keywords:
    Nuclear Reactions
    Published by:
    http://www.aps.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2014-09-23
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Heil, J. ; Wesner, J. ; Lommel, B. ; Assmus, W. ; Grill, W.

    [S.l.] : American Institute of Physics (AIP)
    Published 1989
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Images of the surfaces of cleaved crystals of K0.3MoO3 (blue bronze) and α-Fe2O3 (hematite) have been obtained in air at room temperature using a scanning tunneling microscope in the fast scanning mode. The pictures show a resolution in the range of 0.5 nm and compare well with surface structures derived from the bulk crystal parameters.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.343159

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    1434-601X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract. Detailed fine-structure $\alpha$ -decay studies of 188,190Bi were performed using the complete-fusion reactions of 50,52Cr ions with a 142Nd target at the velocity filter SHIP. The evaporation residues were separated in-flight and subsequently identified on the basis of recoil- $\alpha$ , recoil- $\alpha$ - $\gamma$ /X-ray and excitation function measurements. Improved data on the $\alpha$ -decay of 188,190Bi were obtained and a number of new low-lying excited states in the daughters 184,186Tl were observed. An intruder, presumably 10- state was identified in 184Tl, extending the systematics of such states in the odd-odd Tl nuclei beyond the neutron mid-shell at N = 104. Some technical aspects of experiment at recoil separators are also discussed.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1140/epja/i2003-10050-2

    Articles: DFG German National Licenses
  5. 5
    Staff View
    ISSN:
    1434-601X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract. Alpha-decay of the new nuclide 184Bi has been studied in the complete-fusion reaction 93Nb(94Mo, 3n)184Bi at the velocity filter SHIP. The evaporation residues were separated in-flight and subsequently identified on the basis of recoil- $\alpha$ , recoil- $\alpha$ - $\gamma$ analysis and excitation functions measurements. Two $\alpha$ -decaying isomeric states in 184Bi with half-life values of 13(2) ms and 6.6(1.5) ms were identified. The $\alpha$ -branching ratio of 180Tl was deduced for the first time as $b_\alpha = (2 --12)\%$ . Improved data on the fine-structure $\alpha$ -decay of 186Bi were obtained in the 93Nb(95Mo, 2n)186Bi reaction. A similarity of the decay energies and half-life values of 184,186Bi is pointed out and a possible explanation for this effect is suggested.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1140/epja/i2003-10051-1

    Articles: DFG German National Licenses
  6. 6
    Staff View
    ISSN:
    1434-601X
    Keywords:
    PACS:23.60.+e α decay – 27.70.+q 150 ≤ A ≤ 189 – 27.80.+w 190 ≤ A ≤ 219
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract. New neutron-deficient isotopes 188,189Po have been produced in the complete fusion reaction of 52Cr ions with a 142Nd target at the velocity filter SHIP. The evaporation residues were separated in-flight and subsequently identified on the basis of α-γ and α-conversion electron coincidence measurements and of α-α position and time correlations. In 189Po a ground state to ground state α decay with Eα1= 7540(20) keV, T1/2= 5(1) ms and two fine structure α-decays at Eα2= 7264(15) keV and Eα3= 7316(15) keV have been observed. In 188Po (T1/2= 400+200 −150μs) a ground state to ground state α decay at Eα= 7915(25) keV and a fine structure α decay at Eα= 7350(40) keV have been found. Improved data on the α-decay of 189Bi were obtained.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s100500050359

    Articles: DFG German National Licenses
  7. 7
    Staff View
    ISSN:
    1434-601X
    Keywords:
    PACS. 21.10.Dr Binding energies and masses – 23.60.+e Alpha decay – 25.70.-z Low and intermediate energy heavy-ion collisions – 25.85.Ca Spontaneous fission – 27.90.+b 220 ?A
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract: The even-even nucleus 270110 was synthesized using the reaction 64Ni + 207Pb. A total of eight α-decay chains was measured during an irradiation time of seven days. Decay data were obtained for the ground-state and a high-spin K isomer. The new nuclei 266Hs and 262Sg were identified as daughter products after α-decay. Spontaneous fission of 262Sg terminates the decay chain. The measured data are in agreement with calculations using the macroscopic-microscopic model and with self-consistent HFB calculations with Skyrme-Sly4 interaction.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s100500170137

    Articles: DFG German National Licenses