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  • 21.60.Jz  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Proton-neutron quasiparticle RPA and charge-changing transitions (1989)
    Springer
    The European physical journal 333 (1989), S. 125-129 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.Jz ; 23.40.Hc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract General formulae for a proton-neutron QRPA calculation are presented. All terms in the RPA order are retained, and no specific assumptions on the residual interaction and one-body charge-changing transitions are made. QRPA phonon correlations are introduced in first-order perturbation for quasiparticle transitions from odd-mass and odd-odd parent nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01565141
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Microscopic calculations of beta decay far from stability (1989)
    Springer
    The European physical journal 334 (1989), S. 47-57 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.-s ; 21.60.Cs ; 21.60.Jz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Beta decay properties of nuclei far from stability are of decisive importance for the understanding of the element synthesis in the universe and the determination of the age of the universe by means of cosmochronometers. A new large scale microscopic calculation ofβ −-decay half-lives up to the neutron drip line is presented. This new approach uses the proton-neutron quasiparticle random phase approximation with a Gamow-Teller residual interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294386
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nuclear structure effects on the neutrinoless double beta decay (1989)
    Springer
    The European physical journal 334 (1989), S. 187-194 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.−s ; 23.40.Hc ; 21.60.Jz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The nuclear matrix elements of the 0ν ββ decay of76Ge,82Se,100Mo,128,130Te,136Xe and150Nd are calculated in the proton-neutron quasiparticle RPA with theG-matrix of the Paris potential. It is shown that the matrix elements are not sensitive to details of nuclear structure, in contrast to the 2ν ββ decay. We investigate effects of ground-state correlations and those of short-range correlations on the suppression of the nuclear matrix elements. We also discuss effective values of the neutrino mass which are deduced from experimental 0ν ββ decay half-lives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294219
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of ground-state correlations on 2νββ decay rates and limitations of the QRPA approach (1989)
    Springer
    The European physical journal 334 (1989), S. 177-186 
    Details
    ISSN: 1434-601X
    Keywords: 23.40-s ; 23.40.Hc ; 21.60.Jz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Half-lives of the 2νββ decay are calculated in the proton-neutron QRPA for76Ge,82Se,100Mo,128,130Te,136Xe and150Nd. The strength of the particle-particle interaction, which plays a decisive role for a reliable evaluation of the half-lives, is determined from a QRPA calculation of singleβ + decays. The 2ν decay rates calculated with the interaction strength fitted in this way are strongly suppressed and found to be consistent with the existing experimental data. Effects of the ground-state correlations on the suppression are investigated. On the other hand, the present calculation indicates limitations of the QRPA approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294218
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    Paper (German National Licenses)
    Fulltext
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