Elsevier

Nuclear Physics A

Volume 467, Issue 1, 25 May 1987, Pages 93-114
Nuclear Physics A

The beta decay of 48Mn: Gamow-Teller quenching in fp-shell nuclei

https://doi.org/10.1016/0375-9474(87)90330-7Get rights and content

Abstract

A new nuclide, 48Mn, has been identified and its decay has been studied, using on-line mass separation of 12C(40Ca, p3n) reaction products. The half-life of this nuclide was determined to be 150 (10) ms, and spectra of β-delayed protons and γ-rays have been obtained. A branching ratio of 2.7 (12) × 10−3 was deduced for the emission of β-delayed protons, while an upper limit of 6 × 10−6 was determined for β-delayed α particle emission. A partial level scheme is proposed for 48Cr on the basis of γ-singles and γγ-coincidence data. The deduced Gamow-Teller strength function is compared with predictions from shell model calculations suggesting a quenching factor of 0.53 (17) for the lowest lying states. This result is discussed in comparison with other quenching factors from β-decay studies, in particular those obtained for mirror β-decays in the fp-shell.

References (39)

  • J. Cerny et al.

    Phys. Lett.

    (1971)
  • J. Zioni et al.

    Nucl. Phys.

    (1972)
  • M. Langevin et al.

    Nucl. Phys.

    (1986)
  • C. Gaarde
  • T. Björnstad et al.

    Nucl. Phys.

    (1985)
  • P. Kleinheinz et al.

    Phys. Rev. Lett.

    (1985)
  • R. Kirchner, O. Klepper, D. Schardt and T. Sekine, Ion source development for the GSI on-line isotope separator,...
  • A.H. Wapstra et al.

    Nucl. Phys.

    (1985)
  • E.G. Adelberger et al.

    Phys. Rev. Lett.

    (1985)
  • M.L. Haibert

    Nucl. Data Sheets

    (1977)
  • A. Bohr et al.
  • D.H. Wilkinson et al.

    Nucl. Phys.

    (1974)
  • A. Etchegoyen et al.

    Michigan State University Internal Report MSUCL-524

    (1985)
  • A.G.M. van Hees et al.

    Z. Phys.

    (1981)
  • R.D. Lawson

    Nucl. Phys.

    (1971)
  • J. Cerny et al.

    Ann. Rev. Nucl. Sci.

    (1977)
  • D.H. Wilkinson

    Phys. Rev.

    (1973)

    Nucl. Phys.

    (1973)
  • B.A. Brown et al.

    At. Data and Nucl. Data Tables

    (1985)
  • V.T. Koslowsky et al.

    GSI Scient. Rep. 1984, GSI-84-1

    (1984)
  • Cited by (0)

    1

    Present address: Japan Atomic Energy Research Institute, Department of Radioisotopes, Tokai, Naka, Ibaraki 319-11, Japan.

    2

    Humboldt awardee 1985, permanent address: University of California, Department of Chemistry and Lawrence Berkeley Laboratory, Berkeley, California 94720, USA.

    3

    Present address: Atomic Energy of Canada Limited, Chalk River Nuclear Laboratories, Nuclear Physics Branch, Chalk River, Ontario K0J 1J0, Canada.

    4

    Present address: Warsaw University, Institute of Experimental Physics PL-00-681 Warsaw, Poland.

    5

    Also GANIL, B.P. 5027, F-14021 Caen Cedex, France.

    6

    On leave of absence from Michigan State University, Department of Physics and Astronomy, East Lansing, Michigan 48824, USA.

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