Hot atom chemistry in oxyanion targets. Part IV1: Recoil isochronal annealing in permanganates

S. P. Mishra; Jyoti Singh

doi:10.1007/bf02166348

Hot atom chemistry in oxyanion targets. Part IV1: Recoil isochronal annealing in permanganates

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/bf02166348 ◽

1986 ◽

Vol 105 (6) ◽

pp. 363-374 ◽

Cited By ~ 2

Author(s):

S. P. Mishra ◽

Jyoti Singh

Keyword(s):

Isochronal Annealing ◽

Atom Chemistry

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Theoretical Studies of High Energy Oxygen Atom Chemistry

10.21236/ada422935 ◽

2004 ◽

Author(s):

M. Braunstein ◽

J. Duff ◽

R. Shroll ◽

L. Bernstein ◽

S. Adler-Golden

Keyword(s):

Oxygen Atom ◽

High Energy ◽

Theoretical Studies ◽

Atom Chemistry

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The influence of chemical parameters on the in-situ metal carbonyl complex formation studied with the fast on-line reaction apparatus (FORA)

Radiochimica Acta ◽

10.1515/ract-2020-0031 ◽

2021 ◽

Vol 109 (4) ◽

pp. 243-260 ◽

Cited By ~ 1

Author(s):

Yves Wittwer ◽

Robert Eichler ◽

Dominik Herrmann ◽

Andreas Türler

Keyword(s):

Metal Carbonyl ◽

Ambient Air ◽

Single Atom ◽

Carbonyl Complex ◽

Carbonyl Complexes ◽

On Line ◽

Carrier Gases ◽

And Performance ◽

Atom Chemistry

Abstract A new setup named Fast On-line Reaction Apparatus (FORA) is presented which allows for the efficient investigation and optimization of metal carbonyl complex (MCC) formation reactions under various reaction conditions. The setup contains a 252Cf-source producing short-lived Mo, Tc, Ru and Rh isotopes at a rate of a few atoms per second by its 3% spontaneous fission decay branch. Those atoms are transformed within FORA in-situ into volatile metal carbonyl complexes (MCCs) by using CO-containing carrier gases. Here, the design, operation and performance of FORA is discussed, revealing it as a suitable setup for performing single-atom chemistry studies. The influence of various gas-additives, such as CO2, CH4, H2, Ar, O2, H2O and ambient air, on the formation and transport of MCCs was investigated. O2, H2O and air were found to harm the formation and transport of MCCs in FORA, with H2O being the most severe. An exception is Tc, for which about 130 ppmv of H2O caused an increased production and transport of volatile compounds. The other gas-additives were not influencing the formation and transport efficiency of MCCs. Using an older setup called Miss Piggy based on a similar working principle as FORA, it was additionally investigated if gas-additives are mostly affecting the formation or only the transport stability of MCCs. It was found that mostly formation is impacted, as MCCs appear to be much less sensitive to reacting with gas-additives in comparison to the bare Mo, Tc, Ru and Rh atoms.

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