13-18 May 2018
Casino Conference Centre
Europe/Prague timezone

On line gas phase separation of At and other halogens under ambient conditions

18 May 2018, 08:30
30m
Red Hall (Casino Conference Centre)

Red Hall

Casino Conference Centre

Reitenbergerova 4/95, Mariánské Lázně, Czech Republic
Invited Production and Application of Radionuclides PAR 2

Speaker

Prof. Heinz W. Gaeggeler (Paul Scherrer Institut)

Description

Recently, first gas-phase chemical experiments aimed to investigate the adsorption behavior of the heavy elements Cn and Fl on selenium surfaces were conducted. During this experimental campaign, an unexpected formation and transport of a volatile At species was observed. Monte-Carlo simulations of the deposition pattern of this species on quartz, selenium, and gold surfaces were performed, and the corresponding adsorption enthalpies ΔHadsSiO2(AtOxHy), ΔHadsSe(AtOxHy), and ΔHadsAu(AtOxHy) were estimated. The formation of a volatile AtH species in an in-situ reaction with atomic hydrogen - being present in trace amounts in the carrier gas - is suggested.

Primary authors

Dr Nadine Chiera (JAEA) Prof. Heinz W. Gaeggeler (Paul Scherrer Institut) Dr Robert Eichler (Paul Scherrer Institut) Dr Nikolay Viktorovich Aksenov (Flerov Laboratory for Nuclear Reaction)

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