Zeitschrift für Physik A Atomic Nuclei

, Volume 332, Issue 3, pp 285–287 | Cite as

The Fermi to Gamow-Teller mixing ratio of theβ+ decay of52Mn and time-reversal invariance

  • E. L. Saw
  • C. T. Yap
Nuclear Structure and Reactions

Abstract

To date, ten experimental measurements of the asymmetry parameter have been made for the positron decay of52Mn. The Fermi to Gamow-Teller mixing ratioy can be deduced from such measurements and this quantity is important because the time-reversal violating amplitude is proportional toy/(1+y2). Our theoretical calculation using the Collective Model yieldsy=− 3.5×10−4 for the deformation parameterβ=0.1 andy=− 4.6×10−4 forβ=0.2. Such small values ofy are consistent with time-reversal invarisance.

PACS

23.40-s 27.40+ z 

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References

  1. 1.
    Postma, H., Huiskamp, W.J., Miedema, A.R., Steenland, M.J., Tolhoek, H.A., Gorter, C.J.: Physica24, 157 (1958)Google Scholar
  2. 2.
    Boehm, F.: Phys. Rev.109, 1018 (1958)Google Scholar
  3. 3.
    Ambler, E.: Phys. Rev.110, 787 (1958)Google Scholar
  4. 4.
    Bloom, S.D., Mann, L.G., Miskel, J.A.: Phys. Rev.125, 2021 (1962)Google Scholar
  5. 5.
    Daniel, H., Mehling, O., Muller, O., Subudhi, K.S.: Phys. Rev.128, 261 (1962)Google Scholar
  6. 6.
    Mann, L.G., Camp, D.C., Miskel, J.A., Nagle, R.J.: Phys. Rev.137, B1 1965;139, AB2 (1965)Google Scholar
  7. 7.
    Behrens, H.: Z. Phys.201, 153 (1967)Google Scholar
  8. 8.
    Sawyer, J.A.: Thesis, UCRL — 50440 (1968)Google Scholar
  9. 9.
    Pingot, O.: Nucl. Phys. A174, 627 (1971)Google Scholar
  10. 10.
    Hung, S.T.C., Krane, K.S., Shirley, D.A.: Phys. Rev.C14, 1162 (1976)Google Scholar
  11. 11.
    Calaprice, F.P., Freedman, S.J., Osgood, B., Thomlinson, W.C.: Phys. Rev. C15, 381 (1977)Google Scholar
  12. 12.
    Bouchiat, C.C.: Phys. Rev.118, 540 (1960)Google Scholar
  13. 13.
    Kelly, P.S., Moszkowski, S.A.: Z. Phys.158, 304 (1960)Google Scholar
  14. 14.
    Blin-Stoyle, R.J., Novakovic, L.: Nucl. Phys.51, 133 (1964)Google Scholar
  15. 15.
    Yap, C.T.: Nucl. Phys. A100, 619 (1967)Google Scholar
  16. 16.
    Yalcin, C., Yap, C.T.: Nucl. Phys. A153, 424 (1970)Google Scholar
  17. 17.
    Bertsch, G.P., Wilderthal, B.H.: Phys. Rev. C8, 1023 (1973)Google Scholar
  18. 18.
    Blin-Stoyle, R.J., Yap, C.T.: Nucl. Phys.79, 561 (1966)Google Scholar
  19. 19.
    Yap, C.T., Saw, E.X.: Z. Naturforsch.39A, 1168 (1984)Google Scholar
  20. 20.
    Yap, C.T., Saw, E.L.: Z. Naturforsch.41 A, 1031 (1986)Google Scholar
  21. 21.
    Yap, C.T., Saw, E.L.: Nucl. Phys.A468, 38 (1987)Google Scholar
  22. 22.
    Saw, E.L., Yap, C.T.: Phys. Rev. C37, 1972 (1988)Google Scholar
  23. 23.
    Damgard, J.: Nucl. Phys.79, 374 (1966)Google Scholar
  24. 24.
    Muller, P., Nix, J.R.: At. Data Nucl. Data Tables26, 165 (1981)Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • E. L. Saw
    • 1
  • C. T. Yap
    • 1
  1. 1.Department of PhysicsNational University of SingaporeSingapore

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