Study of nuclear structure of neutron rich double closed shell nuclei by on-line low temperature nuclear orientation method.

在线低温核取向法研究富中子双闭壳核的核结构

• 批准号: 23540337
• 负责人: OHTSUBO TAKASHI
• 金额: $ 3.41万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23540337/
• 关键词: 不安定核; 電磁気モーメント; 偏極核; 偏極核生成; 原子核偏極; 低温

Around nucleus of which the number of protons and neutrons are the "magic number", the nuclear stability increases very well. In such nuclei, we can find the higher order effects in the nuclear structure. So far such study has been done around stable nuclear region; we apply it to neutron-rich region. We measured the magnetic moment of unstable nuclei 49Sc (T1/2 = 57m) by the on-line nuclear orientation method. We compared the result with recent nuclear theoretical calculations. The calculations agree with our results but it shows a need for improvement in theoretical calculation around stable doubly closed shell nuclei.

在以质子数和中子数为“魔术数”的原子核周围，核稳定性得到很好的提高。在这样的原子核中，我们可以发现原子核结构中的高阶效应。到目前为止，这种研究都是围绕稳定核区进行的，我们将其应用于丰中子区。我们用在线核定向法测量了不稳定核49Sc(t1/2=57m)的磁矩。我们将计算结果与最新的核理论计算结果进行了比较。计算结果与我们的结果一致，但表明稳定双闭壳核的理论计算需要改进。