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  • Digitale Medien  (7)
  • 1995-1999  (3)
  • 1980-1984  (4)
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  • Digitale Medien  (7)
Erscheinungszeitraum
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Yrast states in the doubly-odd nucleus100Tc (1995)
    Springer
    The European physical journal 352 (1995), S. 247-255 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.10.Hw ; 27.60.+j ; 23.20.Lv
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract High spin states up toJ=14 and excitation energy up toE *=3076 keV have been observed in the odd-odd nucleus100Tc with the reaction96Zr(7Li, 3n), at bombarding energies between 21 and 31 MeV, by in-beam γ spectroscopy and conversion-electron measurements. A ΔJ=1 negative parity band similar to that observed in theN=57 isotone102Rh, and based on the 8−, 708 keV state has been identified. The observed band can be interpreted in terms of collective core excitations based on a two-quasiparticle state of(πg9/2 ⊗ νh11/2) configuration. Comparison with IBFM-2 calculations have been performed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289497
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  • 2
    Digitale Medien
    Digitale Medien
    Giant dipole resonance inA ∼ 40 hot nuclei from coincidence measurements (1995)
    Springer
    The European physical journal 352 (1995), S. 273-277 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.30.Cz ; 25.70.Gh
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The emission of high-energyγ-rays in the deexcitation of hot40Ca and39K nuclei formed in heavy-ion fusion reactions at excitation energyE x ∼ 90 MeV has been studied. The high energyγ-rays were measured in coincidence with evaporation residues or light charged particles. Theγ spectrum from the self-conjugated compound nucleus40Ca shows an appreciable yield suppression in the Giant Dipole Resonance (GDR) energy region with respect to the39K, due to isospin selection rules in the dipoleγ-decay. The spectral line shapes of theγ spectra are well reproduced by using a statistical code which treats explicitly the isospin quantum number in evaluating level densities and transmission coefficients. The GDR parameters determined from the present coincidence measurements are in good agreement with the systematic in theA ∼ 40 mass region at lower bombarding energy based on the analysis of inclusive spectra.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289500
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  • 3
    Digitale Medien
    Digitale Medien
    The level scheme of91Tc and theβ decay of91Ru(9/2+) (1983)
    Springer
    The European physical journal 314 (1983), S. 135-142 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The level scheme of91Tc has been studied by means of in-beamγ-ray spectroscopy in the irradiations of58Ni and54Fe targets by40Ca beams from the Munich MP tandem and the heavy ion post accelerator. A large number of positive as well as of negative parity yrast-levels with excitation energies up to 8 MeV has been established. The level scheme of91Tc has been compared with shell model claculations and a good agreement for all identified levels has been found. In parallel investigations of the residual activities of the reaction40Ca→54Fe, theβ decay of the (9/2+ ground) state of91Ru has been investigated. Aβ decay scheme of91Ru(9/2+) has been established. The half-life of91Ru(9/2+) has been measured to be 9±1 s.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01879871
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  • 4
    Digitale Medien
    Digitale Medien
    The 2.6 μs 21/2+ isomer in93Ru (1983)
    Springer
    The European physical journal 310 (1983), S. 137-138 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The level scheme of93Ru has been studied in40Ca induced reactions on Ni and Fe targets. Two new levels feeding the known 17/2+ state have been established: an isomeric level (T1/2=2.6 us) at 2081.5 keV with J=21/2+ and a level at 2103 keV, presumably a 17/2− state. The B(E2; 21/2+→17/2+) value and the level scheme are compared to shell model predictions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01433624
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  • 5
    Digitale Medien
    Digitale Medien
    Decay properties of low-lying levels in100Rh (1983)
    Springer
    The European physical journal 311 (1983), S. 163-171 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Low-lying levels of100Rh have been investigated with the reaction100Ru(p, nγ)100Rh in the proton energy range 4.4 MeV≦E p≦6 MeV. A level scheme including 18 previously unreported excited levels has been deduced on the basis of singlesγ spectra and extensiveγ-γ coincidence measurements. Theγ branchings of several levels have also been measured. By means of the pulsed beam technique, the mean lifetimes of the excited states at 151.8, 160.7, 329.4 and 389.7 keV have been determined asτ m=(1.4±0.2)ns, (5.7±0.3)ns, (1.1±0.4)ns and 0.9±0.4)ns, respectively. The lifetimes of the levels at 32.7 keV and 74.8 keV have been found to beτ m=(36.5±4.5) ns and (312.5±7.5) ns, in good agreement with recently reported values. An upper limit of 0.5 ns has also been placed for the lifetimes of eleven other levels.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01415101
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  • 6
    Digitale Medien
    Digitale Medien
    Antibodies anti HTLV-I/II in Sicilian residents, in drug addicts, and in African immigrants (1995)
    Springer
    European journal of epidemiology 11 (1995), S. 359-360 
    Details
    ISSN: 1573-7284
    Schlagwort(e): Antibodies ; HTLV-I/II ; Sera
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01719445
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  • 7
    Digitale Medien
    Digitale Medien
    Properties of excited levels in102Rh by the102Ru(p, nγ) reaction (1984)
    Springer
    The European physical journal 315 (1984), S. 277-285 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The level scheme of102Rh has been investigated by the102Ru(p, nγ) reaction in the proton energy range 3.1 MeV≦E p≦6 MeV. Excitation functions,γ-γ coincidences and pulsed beam measurements have been performed and a level scheme including 33 excited states up toE x≈650 keV has been constructed. Theγ-branchings of several levels have also been measured. The lifetimes of 5 excited states have been determined with the centroid-shift method:τ m(105.2 keV)=(1.3±0.3) ns,τ m(123.7 keV)=(0.6±0.3) ns,τ m(178.6 keV)=(1.5±0.3) ns,τ m(208.7 keV)=(0.5±0.3) ns,τ m(359.6 keV)=(0.8±0.4) ns. Upper limits have been placed for the lifetimes of 20 other levels.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01438451
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