Thermal release rate studies of nuclear reaction products from polycrystalline metal matrices

Wittwer, David; Dressler, Rugard; Eichler, Robert; Gäggeler, Heinz W; Piguet, David; Türler, Andreas (2013). Thermal release rate studies of nuclear reaction products from polycrystalline metal matrices. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 297, pp. 86-93. Elsevier 10.1016/j.nimb.2012.11.021

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The thermal release rate of nuclear reaction products was investigated in offline annealing experiments. This work was motivated by the search for a high melting catcher material for recoiling products from heavy ion induced nuclear fusion reactions. Polycrystalline refractory metal foils of Ni, Y, Zr, Nb, Mo, Hf, W, and Re were investigated as catcher metals. Diffusion data for various tracer/host combinations were deduced from the measured release rates. This work focuses on the diffusion and the release rate of volatile p-elements from row 5 and 6 of the periodic table as lighter homologues of the superheavy elements with Z ≥ 113 to be studied in future experiments. A massive radiation damage enhancement of the diffusion velocity was observed. Diffusion trends have been established along the groups and rows of the periodic table based on the dependence of diffusion velocity on atomic sizes.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Wittwer, David; Eichler, Robert and Türler, Andreas

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0168-583X

Publisher:

Elsevier

Language:

English

Submitter:

Franziska Bornhauser-Rufer

Date Deposited:

04 Apr 2014 21:07

Last Modified:

26 Jun 2016 01:49

Publisher DOI:

10.1016/j.nimb.2012.11.021

URI:

https://boris.unibe.ch/id/eprint/46207

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