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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research >Fusion studies with low-intensity radioactive ion beams using an active-target time projection chamber
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Fusion studies with low-intensity radioactive ion beams using an active-target time projection chamber

机译：使用主动目标时间投射室进行低强度放射性离子束的融合研究

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摘要

The total fusion excitation function for ~(10)Be + ~(40)Ar has been measured over the center-of-momentum (c. m.) energy range from 12 to 24 MeV using a time-projection chamber (TPC). The main purpose of this experiment, which was carried out in a single run of duration 90 h using a ≈ 100 particle per second (pps) ~(10)Be beam, was to demonstrate the capability of an active-target TPC to determine fusion excitation functions for extremely weak radioactive ion beams. Cross sections as low as 12 mb were measured with acceptable (50%) statistical accuracy. It also proved to be possible to separate events in which charged particles were emitted from the fusion residue from those in which only neutrons were evaporated. The method permits simultaneous measurement of incomplete fusion, break-up, scattering, and transfer reactions, and therefore fully exploits the opportunities presented by the very exotic beams that will be available from the new generation of radioactive beam facilities.
机译：〜（10）Be +〜（40）Ar的总聚变激发函数已使用时间投影腔室（TPC）在12至24 MeV的动量中心（c。m。）能量范围内进行了测量。该实验的主要目的是证明一个主动目标TPC确定融合的能力，该实验使用90粒子每秒每秒（pps）〜（10）Be光束在90小时的单个运行中进行极弱放射性离子束的激发功能。以可接受的（50％）统计准确度测量了低至12 mb的横截面。还证明有可能将聚变残渣中带电粒子发射的事件与仅中子蒸发的事件分开。该方法可以同时测量不完全的聚变，破裂，散射和转移反应，因此可以充分利用非常奇异的射线所带来的机会，而这种射线将可以从新一代的放射性射线设施中获得。

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    J.J. Kolata; A.M. Howard; W. Mittig; T. Ahn; D. Bazin; F.D. Becchetti; S. Beceiro-Novo; Z. Chajecki; M. Febbrarro; A. Fritsch; W.G. Lynch; A. Roberts; A. Shore; R.O. Torres-Isea;

  • 作者单位

    Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA;

    Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA,Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;

    Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;

    Physics Department, University of Michigan, Ann Arbor, MI 48109, USA;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA,Department of Physics, Western Michigan University, Kalamazoo, MI 49008, USA;

    Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA,Department of Physics, Gonzaga University, Spokane, WA 99258, USA;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;

    Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA,Physics Department, University of South Dakota, Vermilion, SD 57069, USA;

    National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA,Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;

    Physics Department, University of Michigan, Ann Arbor, MI 48109, USA;

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  • 关键词

    Fusion excitation functions; ~(10)Be + ~(40)Ar; Time projection chamber; Very low intensity beams; Radioactive ion beams;

    机译：融合激励功能;〜（10）Be +〜（40）Ar;时间投影室;强度极低的光束;放射性离子束;

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