Electrodeposition methods in superheavy element chemistry
Electrodeposition methods in superheavy element chemistry
复制标题
超重元素化学中的电沉积方法
DOI：
10.1524/ract.2008.1473
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
N. Wiehl
中科院分区：
文献类型：
--
作者：
H. Hummrich;N. Banik;M. Breckheimer;W. Brüchle;R. Buda;F. Feist;E. Jäger;J. Kratz;B. Kuczewski;D. Liebe;L. Niewisch;M. Schädel;B. Schausten;E. Schimpf;N. Wiehl
为了准备超重元素（SHE）的电沉积实验，研究了它们的同系物。在实验中，使用了各种电极材料和电解质。确定电沉积开始的临界电位（E临界）和溶液中50%原子的沉积电位（E 50%）。在大多数情况下观察到欠电位沉积。开发了用于快速电化学沉积的电解池，并确定了溶液中50%原子的沉积时间（t50%）。在达姆施塔特的Gesellschaft für Schwerionenforschung（GSI）生产了短寿命α发射同位素，用ALOHA（自动液体在线重元素装置）转移到水相中，转移到电解池中，并沉积在钯化镍带上。结果表明，收集、电沉积和α谱仪的耦合是可行的，并可能在SHE化学中有很大的用途。
Summary To prepare electrodeposition experiments with superheavy elements (SHE), their homologs were investigated. In the experiments, various electrode materials and electrolytes were used. Critical potentials (Ecrit) where the electrodeposition starts and potentials for the deposition of 50% of the atoms in solution (E50%) were determined. Underpotential deposition was observed in most cases. An electrolytic cell for a fast electrochemical deposition was developed and the time for the deposition of 50% of the atoms in solution (t50%) was determined. Short lived α-emitting isotopes were produced at Gesellschaft für Schwerionenforschung (GSI), Darmstadt, transferred to the aqueous phase with ALOHA (Automated Liquid Online Heavy element Apparatus), transported to an electrolytic cell and deposited on a palladinated Ni tape. It was shown that the coupling of devices for collection, electrodeposition, and α-spectroscopy is feasible and might be of great use in SHE chemistry.