caa a22 4500 445872098 CHVBK 20180317145515.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1140/epja/i2011-11106-4 doi (NATIONALLICENCE)springer-10.1140/epja/i2011-11106-4 Half-life measurements of 137, 139Cs excited nuclear states [Elektronische Daten] [B. Roussière, M. Cardona, I. Deloncle, D. Hojman, J. Kiener, P. Petkov, D. Tonev, Ts. Venkova] A fast-timing setup has been developed to measure the nuclear-state half-lives of neutron-rich nuclei. The first on-line measurements were performed on 137, 139Cs obtained from the β decay of 137, 139Xe. These neutron-rich Xe nuclei were produced by the 238U photofission induced by the 50MeV electron beam delivered by the ALTO facility. The half-lives of the first excited state in 137Cs and of six excited states in 139Cs were measured for the first time. Taking into account new information given by the deduced transition probabilities, we discuss the structure of the first excited states in 137, 139Cs : it is shown that, in both nuclei, the first excited $$\tfrac{5} {2}^ +$$ level corresponds mainly to the one-proton state issued from the π2d 5/2 orbital and that the most probable spin values for the states located at 289.8, 393.5, and 393.8keV in 139Cs are $$\tfrac{5} {2}^ +$$ , $$\tfrac{3} {2}^ +$$ , and $$\tfrac{1} {2}^ +$$ , respectively. SIF, Springer-Verlag Berlin Heidelberg, 2011 Roussière B. Institut de Physique Nucléaire, IN2P3/CNRS/Université Paris-Sud, F-91406, Orsay, France aut Cardona M. Departamento de Física, Comisión Nacional de Energía Atómica, 1429, Buenos Aires, Argentina aut Deloncle I. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3/CNRS/Université Paris-Sud, F-91405, Orsay, France aut Hojman D. Departamento de Física, Comisión Nacional de Energía Atómica, 1429, Buenos Aires, Argentina aut Kiener J. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3/CNRS/Université Paris-Sud, F-91405, Orsay, France aut Petkov P. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria aut Tonev D. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria aut Venkova Ts Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria aut The European Physical Journal A Springer-Verlag 47/9(2011-09-01), 1-14 1434-6001 47:9<1 2011 47 10050 https://doi.org/10.1140/epja/i2011-11106-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epja/i2011-11106-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Roussière B. Institut de Physique Nucléaire, IN2P3/CNRS/Université Paris-Sud, F-91406, Orsay, France aut NATIONALLICENCE 700 1- Cardona M. Departamento de Física, Comisión Nacional de Energía Atómica, 1429, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Deloncle I. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3/CNRS/Université Paris-Sud, F-91405, Orsay, France aut NATIONALLICENCE 700 1- Hojman D. Departamento de Física, Comisión Nacional de Energía Atómica, 1429, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Kiener J. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3/CNRS/Université Paris-Sud, F-91405, Orsay, France aut NATIONALLICENCE 700 1- Petkov P. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Tonev D. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Venkova Ts Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria aut NATIONALLICENCE 773 0- The European Physical Journal A Springer-Verlag 47/9(2011-09-01), 1-14 1434-6001 47:9<1 2011 47 10050 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer