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Excited states in the proton-unbound nuclide Ta-158

机译:在质子 - 未结合的核素TA-158中的激动状态

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摘要

Excited states in the neutron-deficient odd-odd proton-unbound nuclide Ta-158 have been investigated in two separate experiments. In the first experiment, Ir-166 nuclei were produced in the reactions of 380 MeV Kr-78 ions with an isotopically enriched Mo-92 target. The alpha-decay chain of the 9(+) state in Ir-166 was analyzed. Fine structure in the a decay of the 9(+) state in Re-162 established a 66 keV difference in excitation energy between the lowest-lying 9(+) and 10(+) states in Ta-158. Higher-lying states in Ta-158 were populated in the reactions of 255 MeV Ni-58 ions with an isotopically enriched Pd-102 target. Gamma-ray decay paths that populate, depopulate, and bypass a 19(-) isomeric state have been identified. The general features of the deduced level scheme are discussed and the prospects for observing proton emission branches from excited states are considered.
机译:在两个单独的实验中研究了中子缺乏奇数质子 - 未结合核素TA-158中的激发状态。 在第一个实验中,用同位素富集的MO-92靶标在380mEV KR-78离子的反应中产生IR-166核。 分析IR-166中9(+)状态的α-衰减链。 RE-162中9(+)状态的衰减中的细结构在TA-158中的最低位9(+)和10(+)态之间的激发能中建立了66keV差异。 通过同位素富集的PD-102靶标在255mEV Ni-58离子的反应中填充TA-158中的高躺感。 已经识别了填充,缩小和绕过19( - )异构状态的伽马射线衰减路径。 讨论了推导的水平方案的一般特征,考虑了观察兴奋状态的质子发射分支的前景。

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  • 来源
    《Physical review, C》 |2016年第3期|共9页
  • 作者单位

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Alba Nova Ctr Dept Phys Royal Inst Technol S-10691 Stockholm Sweden;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Tech Univ Darmstadt Inst Kemphys Petersenstr 30 D-64289 Darmstadt Germany;

    Alba Nova Ctr Dept Phys Royal Inst Technol S-10691 Stockholm Sweden;

    Alba Nova Ctr Dept Phys Royal Inst Technol S-10691 Stockholm Sweden;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Alba Nova Ctr Dept Phys Royal Inst Technol S-10691 Stockholm Sweden;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Tech Univ Darmstadt Inst Kemphys Petersenstr 30 D-64289 Darmstadt Germany;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Argonne Natl Lab 9700 S Cass Ave Argonne IL 60439 USA;

    STFC Daresbury Lab Warrington WA4 4AD Cheshire England;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Jyvaskyla Dept Phys FI-40014 Jyvaskyla Finland;

    Univ Manchester Schuster Lab Manchester M13 9PL Lancs England;

    Univ Liverpool Oliver Lodge Lab Liverpool L69 7ZE Merseyside England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 原子核物理学、高能物理学;
  • 关键词

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