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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research >A new differentially pumped plunger device to measure excited-state lifetimes in proton emitting nuclei
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A new differentially pumped plunger device to measure excited-state lifetimes in proton emitting nuclei

机译：一种新的差分泵浦柱塞装置，用于测量质子发射核的激发态寿命

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摘要

A new plunger device has been designed and built to measure the lifetimes of unbound states in exotic nuclei beyond the proton drip-line. The device has been designed to work in both vacuum and dilute-gas environments made possible through the introduction of a low-voltage stepping motor. DPUNS will be used in conjunction with the gas-filled separator RITU and the vacuum separator MARA at the accelerator laboratory of the University of Jyvaskyla, Finland, to measure the lifetimes of excited states with low population cross-sections. This is achieved by eliminating the need for a carbon foil to isolate the helium gas of RITU from the beam line thus reducing the background from beam-foil reactions. The inclusion of a high-sampling rate data acquisition card increases further the sensitivity of the device. The plunger will be used to address many key facets of nuclear structure physics with particular emphasis on the effect of deformation on proton emission rates.
机译：已经设计并制造了一种新的柱塞装置，以测量质子滴线以外的外来核中未结合态的寿命。通过引入低压步进电机，该设备被设计为可在真空和稀薄气体环境中工作。 DPUNS将与芬兰于韦斯屈莱大学的加速器实验室中的充气分离器RITU和真空分离器MARA结合使用，以测量低横截面激发态的寿命。这是通过消除使用碳箔将RITU的氦气与束线隔离从而减少束箔反应的本底来实现的。包含高采样率数据采集卡可进一步提高设备的灵敏度。柱塞将用于解决核结构物理的许多关键方面，特别强调变形对质子发射速率的影响。

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  • 作者

    M.J. Taylor; D.M. Cullen; A.J. Smith; A. McFarlane; V. Twist; G.A. Alharshan; M.G. Procter; T. Braunroth; A. Dewald; E. Ellinger; C. Fransen; P.A. Butler; M. Scheck; D.T. Joss; B. Saygi; C.G. McPeake; T. Grahn; P.T. Greenlees; U. Jakobsson; P. Jones; R. Julin; S. Juutinen; S. Ketelhut; M. Leino; P. Nieminen; J. Pakarinen; P. Peura; P. Rahkila; P. Ruotsalainen; M. Sandzelius; J. Saren; C. Scholey; J. Sorri; S. Stolze; J. Uusitalo;

  • 作者单位

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    School of Physics & Astronomy, Schuster Laboratory, The University of Manchester, Manchester Ml3 9PL, UK;

    lnstitut fur Kernphysik der Universitat zu Koln, Cologne, Germany;

    lnstitut fur Kernphysik der Universitat zu Koln, Cologne, Germany;

    lnstitut fur Kernphysik der Universitat zu Koln, Cologne, Germany;

    lnstitut fur Kernphysik der Universitat zu Koln, Cologne, Germany;

    Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK;

    Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK;

    Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK;

    Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK;

    Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

    Accelerator Laboratory, Department of Physics, University of Jyvaeskylae. Jyvaeskylae FIN-40014, Finland;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    plunger; excited-state lifetimes; ~(134)Nd; proton-emitting nuclei; RDDS; DDCM; cas mode; vacuum mode;

    机译：柱塞激发态寿命〜（134）钕;质子发射核RDDS;DDCM;cas模式真空模式;

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