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  • 1995-1999  (2)
  • 1955-1959  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Zur Isomerie des72Hf179 (1959)
    Springer
    The European physical journal 154 (1959), S. 408-418 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Dasγ- und das Konversionselektronenspektrum des 19 sec-Hf-Isomers wurden mit Szintillationsspektrometern in 47π-Geometrie gemessen. Dabei wurde die Halbwertszeit neu bestimmt zuT 1/2= (18,6+-0,2) sec. Aus den gemessenen Spektren konnten neben den Energien die Konversionskoeffizienten für beide Übergänge ermittelt werden. Für den ersten 161 keV-Übergang wurden ein Gesamtkonversionskoeffizientα 161= 35+-2 und ein K-Konversionskoeffizient α K,161=19,4+-1,2 gefunden, die gut mit den für einenM 3-Übergang berechneten Faktoren übereinstimmen. Die Messungen ergaben für die Energie des zweiten Übergangs E2= (217±2) keV und für den Gesamtkonversionskoeffizienten α217=0,055+-0,010. Im Gegensatz zur bisherigen Vermutung folgt daraus eindeutig, daß es sich bei diesem Übergang um E1-Strahlung handelt. Spin und Parität des Grundzustands und der angeregten Zustände des Hf179 sind damit im Einklang mit der vonNilsson angegebenen Niveaufolge für deformierte Kerne.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01328961
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Das Gammaspektrum des34Se81 (1959)
    Springer
    The European physical journal 157 (1959), S. 106-111 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The decay of Se81 (18 min) produced by neutron bombardement of natural Se and 98% enriched Se81 has been studied with the aid of scintillation-spectrometers. Gamma-rays have been observed and could be identified as belonging to the decay of Se81, revealing three excited levels in Br31 at (282±3) keV, (565±6) keV and (820±10) keV. The branching ratios of the beta-components are 98,7% leading to the ground state and (0,06±0,03)%, (0,85±0,20)% and (0,40±0,10)% leading to the excited states, respectively. The 565 keV-level decays to the ground state directly or by a cascade-transition with nearly equal intensities, the 820 keV-level mainly by a direct transition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01375154
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Beta-decay energy and atomic mass of148Tb (1995)
    Springer
    The European physical journal 352 (1995), S. 1-2 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Dr ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Q EC values of the $${}^{148}Tb_{2^ - } $$ ground-state and the $${}^{148}Tb_{9^ + } $$ isomer were measured to the 5750(40) keV and 5846(50) keV, respectively, corresponding to a148Tb ground-state mass-excess of ⦓70527(30) keV. The impact on mass calculations near146Gd is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292750
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  • 4
    Electronic Resource
    Electronic Resource
    Evidence for the Iπ=8−, K=8 isomeric state in184Hf (1995)
    Springer
    The European physical journal 351 (1995), S. 11-12 
    Details
    ISSN: 1434-601X
    Keywords: 27.70.+q ; 23.20.Ck
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using an 11.4MeV/u136Xe beam of the UNILAC accelerator of GSI and anatW target, A=184 isobars were produced and separated by using an on-line mass separator. A new isomeric state was found in184Hf. This state decays with a half-life of 48(10) s and emits three γ-rays of 73, 482, and 555 keV as well as lower-lying cascade transitions. The hindrance of the 73 keV-E1 transition with ΔK=8 is compared with those of other even-even hafnium isotopes. The half-life of184Lu was estimated to be between 15 and 25s.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292780
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    Paper (German National Licenses)
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