caa a22 4500 445872276 CHVBK 20180317145515.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1140/epja/i2011-11155-7 doi (NATIONALLICENCE)springer-10.1140/epja/i2011-11155-7 Beta and gamma decays of J π [Elektronische Daten] 1+, 24mAl state : β and γ branching ratios [D. Nishimura, Y. Fujita, M. Fukuda, E. Ganioğlu, Y. Ichikawa, M. Kanazawa, A. Kitagawa, M. Mihara, S. Momota, B. Rubio, S. Sato, G. Susoy, M. Torikoshi, K. Matsuta] A β-γ spectroscopy of the J π , 426 keV isomeric state of 24Al (24m Al) has been carried out by using a 24Al secondary beam with high purity and high isomeric ratio. From the absolute γ-ray and β-particle intensities observed in the decay of the isomeric state, the branching ratio R B of the isomeric γ decay from 24m Al to the J π = 4+, ground state of 24Al 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 γ-decay strength B(M3) of the 24m Al decay becomes smaller and the total β-decay branching ratio becomes larger. In particular, the β-decay branching ratio to the ground state of 24Mg 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 24m Al to the J π = 0+, ground state of 24Mg. This value is in good agreement with the values derived from charge-exchange reactions. SIF, Springer-Verlag Berlin Heidelberg, 2011 Nishimura D. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut Fujita Y. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut Fukuda M. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut Ganioğlu E. Physics Department, Istanbul University, 34134, Istanbul, Turkey aut Ichikawa Y. RIKEN Nishina Center, 351-0198, Wako, Saitama, Japan aut Kanazawa M. National Institute of Radiological Sciences, 263-8555, Inage-ku, Chiba, Japan aut Kitagawa A. National Institute of Radiological Sciences, 263-8555, Inage-ku, Chiba, Japan aut Mihara M. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut Momota S. Kochi University of Technology, 782-8502, Kami, Kochi, Japan aut Rubio B. Instituto de Física Corpuscular, CSIC-University of Valencia, E-46071, Valencia, Spain aut Sato S. National Institute of Radiological Sciences, 263-8555, Inage-ku, Chiba, Japan aut Susoy G. Physics Department, Istanbul University, 34134, Istanbul, Turkey aut Torikoshi M. Kochi University of Technology, 782-8502, Kami, Kochi, Japan aut Matsuta K. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut The European Physical Journal A Springer Berlin Heidelberg 47/12(2011-12-01), 1-7 1434-6001 47:12<1 2011 47 10050 https://doi.org/10.1140/epja/i2011-11155-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epja/i2011-11155-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nishimura D. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Fujita Y. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Fukuda M. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Ganioğlu E. Physics Department, Istanbul University, 34134, Istanbul, Turkey aut NATIONALLICENCE 700 1- Ichikawa Y. RIKEN Nishina Center, 351-0198, Wako, Saitama, Japan aut NATIONALLICENCE 700 1- Kanazawa M. National Institute of Radiological Sciences, 263-8555, Inage-ku, Chiba, Japan aut NATIONALLICENCE 700 1- Kitagawa A. National Institute of Radiological Sciences, 263-8555, Inage-ku, Chiba, Japan aut NATIONALLICENCE 700 1- Mihara M. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Momota S. Kochi University of Technology, 782-8502, Kami, Kochi, Japan aut NATIONALLICENCE 700 1- Rubio B. Instituto de Física Corpuscular, CSIC-University of Valencia, E-46071, Valencia, Spain aut NATIONALLICENCE 700 1- Sato S. National Institute of Radiological Sciences, 263-8555, Inage-ku, Chiba, Japan aut NATIONALLICENCE 700 1- Susoy G. Physics Department, Istanbul University, 34134, Istanbul, Turkey aut NATIONALLICENCE 700 1- Torikoshi M. Kochi University of Technology, 782-8502, Kami, Kochi, Japan aut NATIONALLICENCE 700 1- Matsuta K. Department of Physics, Osaka University, 560-0043, Toyonaka, Osaka, Japan aut NATIONALLICENCE 773 0- The European Physical Journal A Springer Berlin Heidelberg 47/12(2011-12-01), 1-7 1434-6001 47:12<1 2011 47 10050 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer