High-precision half-life measurement of the β+ decay of Na21

P. D. Shidling, R. S. Behling, B. Fenker, J. C. Hardy, V. E. Iacob, M. Mehlman, H. I. Park, B. T. Roeder, and D. Melconian
Phys. Rev. C 98, 015502 – Published 27 July 2018

Abstract

The β+ decay of Na21 to Ne21 is one of the four cases currently being used to determine the value of Vud from nuclear mirror (T=1/2) transitions. To date, published values for the half-life of Na21 have not been consistent with one another. We report here a new measurement of the half-life: 22.4615±0.0039(stat)±0.00150.0001(syst)s. This result increases the world average of the Na21 half-life by 0.0048 s and reduces the uncertainty by a factor of 1.5.

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  • Received 19 February 2018

DOI:https://doi.org/10.1103/PhysRevC.98.015502

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

P. D. Shidling1,*, R. S. Behling1,2, B. Fenker1,3, J. C. Hardy1,3, V. E. Iacob1, M. Mehlman1,3, H. I. Park1, B. T. Roeder1, and D. Melconian1,3

  • 1Cyclotron Institute, Texas A&M University, College Station, Texas 77843-3366, USA
  • 2Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, USA
  • 3Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, USA

  • *pdshidling@tamu.edu

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Issue

Vol. 98, Iss. 1 — July 2018

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