Coprecipitation experiment with Sm hydroxide using a multitracer produced by nuclear spallation reaction: A tool for chemical studies with superheavy elements

Yoshitaka Kasamatsu; Takuya Yokokita; Keigo Toyomura; Yudai Shigekawa; Hiromitsu Haba; Jumpei Kanaya; Minghui Huang; Yutaka Ezaki; Takashi Yoshimura; Kosuke Morita; Atsushi Shinohara

doi:10.1016/j.apradiso.2016.09.003

Coprecipitation experiment with Sm hydroxide using a multitracer produced by nuclear spallation reaction: A tool for chemical studies with superheavy elements

Appl Radiat Isot. 2016 Dec:118:105-116. doi: 10.1016/j.apradiso.2016.09.003. Epub 2016 Sep 6.

Affiliations

¹ Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043 Japan. Electronic address: kasa@chem.sci.osaka-u.ac.jp.
² Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043 Japan.
³ Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama, 351-0198 Japan.
⁴ Radioisotope Research Center, Osaka University, Suita, Osaka, 565-0871 Japan.

PMID: 27623042
DOI: 10.1016/j.apradiso.2016.09.003

Abstract

To establish a new methodology for superheavy element chemistry, the coprecipitation behaviors of 34 elements with samarium hydroxide were investigated using multitracer produced by a spallation of Ta. The chemical reactions were rapidly equilibrated within 10s for many elements. In addition, these elements exhibited individual coprecipitation behaviors, and the behaviors were qualitatively related to their hydroxide precipitation behaviors. It was demonstrated that the ammine and hydroxide complex formations of superheavy elements could be investigated using the established method.

Keywords: Ammine complex; Hydroxide precipitate; Multitracer; Samarium coprecipitation; Superheavy element; Transactinide element.