High-precision branching-ratio measurement for the superallowed β+ emitter $^{26}$Al$^{m}$

Abstract : A high-precision branching-ratio measurement for the superallowed β + emitter 26Alm was performed at the TRIUMF-ISAC radioactive ion beam facility. An upper limit of 12 ppm at 90% confidence level was found for the second forbidden β + decay of 26Alm to the 2+ 1 state at 1809 keV in 26Mg. An inclusive upper limit of 15 ppm at 90% confidence level was found when considering all possible nonanalog β + /EC decay branches of 26Alm, resulting in a superallowed branching ratio of 100.0000+0 −0.0015%.
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Journal articles
Physical Review C, American Physical Society, 2012, 85, pp.055501. <10.1103/PhysRevC.85.055501>


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Contributor : Michel Lion <>
Submitted on : Thursday, May 31, 2012 - 11:00:06 AM
Last modification on : Thursday, May 31, 2012 - 11:00:27 AM

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P. Finlay, G.C. Ball, J.R. Leslie, C.E. Svensson, C. Andreoiu, et al.. High-precision branching-ratio measurement for the superallowed β+ emitter $^{26}$Al$^{m}$. Physical Review C, American Physical Society, 2012, 85, pp.055501. <10.1103/PhysRevC.85.055501>. <in2p3-00702722>

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