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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Nuclear structure studies by direct reaction experiments with stored radioactive beams
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Nuclear structure studies by direct reaction experiments with stored radioactive beams

机译：通过直接反应实验对储存的放射性束进行核结构研究

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The experimental conditions at the next generation facilities for stored radioactive ion beams presently proposed or under construction will provide unique opportunities for nuclear structure studies on nuclei far off stability and will enable to explore completely new and unknown regions in the chart of nuclides. In particular. the predicted luminosities will allow for the investigation of direct reactions with stored and cooled radioactive beams in inverse kinematics using internal H, He. etc. targets. Such light-ion induced direct reactions, as for example elastic and inelastic scattering, transfer, charge exchange, or knock-out reactions, have been proved in the past, for the case of stable nuclei, to be powerful tools for obtaining nuclear structure information, and were also applied within the last decade for the investigation of light exotic nuclei with radioactive beams bombarding external targets. A brief overview on the physics program planned at the future NESR storage ring at GSI, the physics questions to be addressed, the dedicated reactions to be used. and the regions of interest in the chart of nuclides is given. The advantage of using stored beams and internal targets for such investigations will depend on the specific exotic nuclei and reactions chosen. This is discussed by a comparison of the conditions for the application of internal and external targets for reaction experiments with exotic beams. For the special case of elastic proton scattering at intermediate energies a feasibility study is presented, including a discussion of the experimental scenario. This method was applied recently for the investigation of nuclear matter distributions of the light neutron-rich halo nuclei He-6.8 and Li-11 using external targets. A few examples of the results are briefly discussed. The use of internal targets and stored beams will allow in future to extend such investigations to a wide range of medium heavy and heavy nuclei far off stability, and will therefore be one of the key reactions of the experimental program at the future NESR facility. [References: 18]
机译：目前提议或正在建设中的用于储存放射性离子束的下一代设施的实验条件，将为研究远离稳定核的核结构提供独特的机会，并将能够探索核素图中的全新区域和未知区域。特别是。预测的光度将允许使用内部H，He在逆运动学中研究与储存和冷却的放射性束的直接反应。等目标。过去已经证明，这种轻离子诱导的直接反应，例如弹性和非弹性散射，转移，电荷交换或敲除反应，对于稳定的核而言，是获得核结构信息的有力工具。 ，并且在过去十年中也被用于研究带有放射束轰击外部目标的轻型外来核。有关在GSI的NESR未来存储环上计划的物理计划的简要概述，要解决的物理问题以及要使用的专用反应。并给出了核素图中的感兴趣区域。使用存储的光束和内部目标进行此类研究的优势将取决于所选择的特定外来核和反应。通过比较使用内部和外部目标进行奇异束反应实验的条件来讨论这一点。对于中能弹性质子散射的特殊情况，提出了可行性研究，其中包括对实验场景的讨论。该方法最近被用于利用外部目标研究富中子的轻核He-6.8和Li-11的核物质分布。简要讨论了一些结果示例。内部靶标和存储束的使用将使将来的研究范围扩展到范围广泛的中重核和远稳定核，因此将成为未来NESR设施实验计划的关键反应之一。 [参考：18]

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