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  • 23.40.-s  (2)
  • 23.60.+ e  (1)
  • 1
    Electronic Resource
    Electronic Resource
    β + ratio andβ-delayedγ-decay of146Eu (1988)
    Springer
    The European physical journal 329 (1988), S. 169-176 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.-s ; 23.20.Lv ; 27.60.+j ; A=146
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The positron decay of146Eu was investigated, firstly to derive for the allowed transition to the 2046 keV state in146Sm the electron capture to positron decay ratio. The experimental valueEC/β +=43.7(42) is found to be in agreement within the respective error intervals with the ones calculated from the formalism of allowed decay using the recentQ-values of146Eu. Further on, theγ-decay properties of146Eu have been reinvestigated with emphasis on implied modifications of the hitherto accepted decay scheme: 42 new levels and 33 newγ-transitions were placed in the revised level scheme, 12 of the previously reported levels were deleted. The level distribution of146Sm is discussed within a statistical model. The indication for a non-statisticalβ-strength function is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01283772
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Decay of the new isotope167W (1989)
    Springer
    The European physical journal 332 (1989), S. 153-156 
    Details
    ISSN: 1434-601X
    Keywords: 27.70.+ q ; 23.60.+ e
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Theα- and β-decay of the new isotope167W were observed in the reaction of 191 MeV36Ar with136Ba using a helium-jet and a fast tape-transport system. The identification is based on coincidences with tantalum X-rays and excitation function measurements. The measured half-life is 19.9(5) s. A decay scheme comprising 12 levels was constructed from γγ-coincidences. The β-decay is discussed within experimental and calculated level systematics. Alpha-rays with energy 4.55(2) MeV were assigned to167W.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289770
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    β-Delayed neutron emission of15B,18C,19,20N,34,35Al and39P (1988)
    Springer
    The European physical journal 330 (1988), S. 63-68 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Np ; 23.40.-s ; 27.30.+ t
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The isotopes15B,18C,19,20N,34,35Al and39P have been produced as projectile-like fragments from the interaction of a86Kr beam of 45 MeV/u from GANIL with a181Ta target. Separated by the 0° magnetic analyser LISE, the nuclei are identified by means of aΔE- E semiconductor telescope. It is surrounded, in a geometry close to 4π, by a thin plastic scintillator (NE 102) and a large volume liquid scintillator (NE 213) for the detection of betas and neutrons, respectively, from the decay of the implanted nuclei. By observation of theβ-delayed neutrons, the half-livesT 1/2 and neutron emission probabilitiesP n have been measured. TheT 1/2 of18C,20N,35Al,39P and Pn of18C,19,20N,34,35Al and39P are determined for the first time. For the isotopes17C,36,37Si and38P upper limits of Pn are deduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01287265
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    Paper (German National Licenses)
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