Zeitschrift für Physik A Atomic Nuclei

, Volume 332, Issue 3, pp 285–287

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

DOI: 10.1007/BF01295458

Cite this article as:
Saw, E.L. & Yap, C.T. Z. Physik A - Atomic Nuclei (1989) 332: 285. doi:10.1007/BF01295458


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.


23.40-s 27.40+ z 

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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