Superallowed 0+ → 0+ and isospin-forbidden JπJπ fermi transitions

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Abstract

Experimental data on Q-values, β end-point energies, half-lives, and branching ratios pertaining to superallowed 0+ → 0+ β-transitions are complied and evaluated. Out of a total of eighteen Jt values, seven are known to better than 0.3% accuracy. The weighted average of all values, Jt = 3088.6 ± 2.1 sec, was employed to determine the effective vector coupling constant Gv = (1.4115 ± 0.0005) × 10−49 erg cm3. Experimental data on β-transitions between states of same spin but different isospin are also compiled and evaluated if they yield Fermi matrix elements. Information is obtained on isospin impurities of thirty-three nuclear states as deduced from β-decay experiments. The isospin impurities are extremely small, the largest being 0.05% reported for the 64Ga ground state. The literature survey ended in April 1975.

References (49)

  • S.D. Bloom

    Nuovo Cimento

    (1964)
  • H. BehrensH. Behrens

    Kernforschungszentrum Karlsruhe KFK Report 1249

    (1970)
  • H. Behrens et al.

    Numerical Tables for Beta Decay and Electron Capture

  • A. Sirlin

    Nucl. Phys. B

    (1974)
  • M. Roos

    Nucl. Phys. B

    (1974)
  • N.B. Gove et al.

    Nuclear Data Tables

    (1971)
  • H. Behrens et al.

    Nucl. Phys. A

    (1968)
    H. Behrens et al.

    Nucl. Phys. A

    (1972)
  • N. Cabibbo

    Phys. Rev. Lett.

    (1963)
    R.E. Marshak et al.E.D. Commins
  • J. Duclos et al.

    Phys. Lett.

    (1973)
    J. Duclos et al.

    Particle Data Group

    (1974)
  • W.J. Courtney et al.

    Atomic Data and Nuclear Data Tables

    (1975)
  • S.D. Bloom
  • H. Schopper

    Nucl. Instrum. Methods

    (1967)
  • L.A. Sliv et al.

    Phys. Lett.

    (1965)
  • C.S. Warke
  • A.H. Wapstra et al.

    Nuclear Data Tables

    (1971)
  • A. H. Wapstra, K. Bos, and N. B. Gove, private communication, supplement to Ref. 44 (August...
  • Nuclear Data Sheet, compiled by the Nuclear Data Group, Oak Ridge National Laboratory, Academic Press, New...
  • A. Ikeda

    Prog. Theor. Phys.

    (1967)
    J.-I. Fujita et al.

    Prog. Theor. Phys.

    (1966)
    J.-I. Fujita et al.

    Prog. Theor. Phys.

    (1966)
    J.-I. Fujita et al.

    Prog. Theor. Phys.

    (1966)
  • R.P. Feynman et al.

    Phys. Rev.

    (1958)
  • A. Kropf et al.

    Z. Phys.

    (1974)
  • S.S. Gershtein et al.

    JETP (USSR)

    (1955)
    S.S. Gershtein et al.

    Sov. Phys.-JETP

    (1956)
  • H. Schopper
  • C.S. Wu et al.
  • R.J. Blin-Stoyle

    Isospin in Nuclear β-Decay

    R.J. Blin-Stoyle
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    This work was sponsored in part by the U.S. Energy Research and Development Administration under contract with the Union Carbide Corporation. The Oak Ridge Associated Universities provided travel funds for one of the authors (T.A.W.)

    Now at the Zentralstelle für Atomkernenergie-Dokumentation (ZAED), Kernforschungszentrum Karlsruhe

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