@Article{Nishimura_etal2011,
author="Nishimura, D.
and Fujita, Y.
and Fukuda, M.
and Ganioglu, E.
and Ichikawa, Y.
and Kanazawa, M.
and Kitagawa, A.
and Mihara, M.
and Momota, S.
and Rubio, B.
and Sato, S.
and Susoy, G.
and Torikoshi, M.
and Matsuta, K.",
title="Beta and gamma decays of J(pi)=1(+), Al-24m state beta and gamma branching ratios",
journal="European Physical Journal A",
year="2011",
publisher="Springer",
volume="47",
number="12",
pages="155--7pp",
abstract="A beta-gamma spectroscopy of the J(pi) = 1(+), 426 keV isomeric state of Al-24 ( Al-24m) has been carried out by using a Al-24 secondary beam with high purity and high isomeric ratio. From the absolute gamma-ray and beta-particle intensities observed in the decay of the isomeric state, the branching ratio R-B of the isomeric gamma-decay from Al-24m to the J(pi) = 4(+), ground state of Al-24 have been derived. The obtained R-B value of 69.6(7){\%} is much smaller than the previously accepted value of 82.5(30){\%}. The precise half-life for the isomer decay, T-1/2(m) = 130.9(13) ms, has been also determined in this experiment. Accordingly, the M3 gamma-decay strength B(M3) of the Al-24m decay becomes smaller and the total beta-decay branching ratio becomes larger. In particular, the beta-decay branching ratio to the ground state of Mg-24 becomes 24.3(9){\%}, which is 2.4 times larger than the previous value of 10.1(28){\%}. By combining the branching ratio and the half-life, the Gamow-Teller (GT) transition strength B(GT) of 0.0194(7) is deduced for the GT transition from Al-24m to the J(pi) = 0(+), ground state of Mg-24. This value is in good agreement with the values derived from charge-exchange reactions.",
optnote="WOS:000300285100010",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=905), last updated on Thu, 08 Mar 2012 10:11:39 +0000",
issn="1434-6001",
doi="10.1140/epja/i2011-11155-7",
opturl="https://doi.org/10.1140/epja/i2011-11155-7",
language="English"
}