First chemical separation and identification of Seaborgium
Conference
·
OSTI ID:560259
- Paul Scherrer Institute, Villigen (Switzerland)
- Lawrence Berkeley National Lab., CA (United States); and others
The chemical properties of element 106 (Seaborgium, Sg) were successfully studied using the On-line Gas Chromatography Apparatus (OLGA III). After chemical separation of Sg in the form of volatile oxichlorides the nuclides {sup 265}Sg and {sup 266}Sg were unambiguously identified and their half-lives were determined for the first time. The Sg nuclides were produced from the {sup 248}Cm({sup 22}Ne, 4,5n){sup 266,265}Sg reaction at the GSI Darmstadt UNILAC accelerator. Simultaneously, short-lived W nuclides were produced from a small admixture of {sup 152}Gd to the Cm target material. As predicted by relativistic calculations and by extrapolations of chemical properties, it was demonstrated that Sg oxichlorides are indeed less volatile than their lighter homologue W- and Mo-oxichlorides.
- OSTI ID:
- 560259
- Report Number(s):
- CONF-970443--
- Country of Publication:
- United States
- Language:
- English
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