Beta-decay properties of Si-25 and P-26

L Achouri, J Aysto, R Beraud, B Blank, G Canchel, S Czajkowski, P Dendooven, A Ensallem, J Giovinazzo, N Guillet, J Honkanen, A Jokinen, A Laird, M Lewitowicz, C Longour, FD Santos, K Perajarvi, M Stanoiu

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Abstract

The beta-decay properties of the neutron-deficient nuclei Si-25 and P-26 have been investigated at the GANIL/LISE3 facility by means of charged-particle and gamma-ray spectroscopy. The decay schemes obtained and the Gamow-Teller strength distributions are compared to shell-model calculations based on the USD interaction. B(GT) values derived from the absolute measurement of the beta-decay branching ratios give rise to a quenching factor of the Gamow-Teller strength of 0.6. A precise half-life of 43.7 (6) ms was determined for (26)p, the beta-(2)p decay mode of which is described.

Original languageEnglish
Pages (from-to)419-435
Number of pages17
JournalEuropean Physical Journal A
Volume21
Issue number3
DOIs
Publication statusPublished - Sep-2004

Keywords

  • SD-SHELL NUCLEI
  • GAMOW-TELLER STRENGTH
  • DELAYED-PROTON DECAY
  • ENERGY-LEVELS
  • LIGHT-NUCLEI
  • 2ND-CLASS CURRENTS
  • ASYMMETRY
  • MG-21
  • RATES
  • A=20

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