Production of $$^{178}$$Hfm2 and a simple chemical separation method for Hf recovery
Production of $$^{178}$$Hfm2 and a simple chemical separation method for Hf recovery
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$$^{178}$$Hfm2 的生产以及用于 Hf 回收的简单化学分离方法
DOI：
10.1007/s10967-021-08032-z
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发表时间：
2021
影响因子：
1.6
通讯作者：
Yamaguchi Yuki
中科院分区：
文献类型：
--
作者：
Kitamura Noritaka;Imai Nobuaki;Haba Hiromitsu;Michimasa Shin’ichiro;Shimoura Susumu;Yamaguchi Yuki
核异构体Hfm2以其独特的性质使各种研究成为可能。为了研究Hfm2引起的奇异核反应，从光度的角度来看，同质异能靶是最有效的选择。然而，这带来了许多需要克服的挑战。其中一个挑战是，纳克量的异构体对于制造靶子是必不可少的。我们进行了一项中试实验，以建立生产异构体的方法，作为在RIKEN放射性同位素束工厂(RIBF)进行大规模生产的第一步。由AVF回旋加速器提供的40 MeV安束轰击了天然丰度的金属Yb箔。用一种新的化学分离方法从辐照靶材中提取了Hf同位素。我们生产了一个含有Hfm2原子的样品，为RIBF未来的大规模生产铺平了道路。
The nuclear isomerHfm2enables various investigations owing to its unique properties. To study exotic nuclear reactions induced byHfm2, an isomeric target is the most effective option in terms of luminosity. However, this creates many challenges to overcome. One of the challenges is that nanogram quantities of the isomer are essential for fabricating a target. We conducted a pilot experiment to establish the method for isomer production, as the first step toward large-scale production at the Radioactive Isotope Beam Factory (RIBF), RIKEN. Anbeam at 40 MeV supplied from the AVF cyclotron bombarded natural-abundance metallic Yb foils. Hf isotopes were extracted from the irradiated target by a new chemical separation method. We produced a sample containingatoms ofHfm2, paving the way to future large-scale production at the RIBF.