atw 2018-05v6

inforum

atw Vol. 63 (2018) | Issue 5 ı May

Acknowledgements

This work was funded by the State

Council of the Canton of Schaffhausen,

Switzerland. The authors declare no

conflict of interest. The source code of

the computational tool used for

thermal calculations in this study has

been made available by J.H. to the

German nuclear science web-platform

nucleonica, who provide a considerably

speeded-up web-application

thereof.

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Authors

Dr.-Ing. Joachim Heierli

Interkantonales Labor

Mühlentalstrasse 188

8200 Schaffhausen, Switzerland

Dr. Helmut Hirsch

Consultant to the Environment

Agency Austria

Spittelauer Lände 5

1090 Vienna, Austria

Dr. Bruno Baltes

Senior adviser on long-term safety

of radioactive waste disposal

Germany

325

RESEARCH AND INNOVATION

Heavy Ions Irradiation as a Tool to

Minimize the Number of In-Pile Tests

in UMo Fuel Development

H. Breitkreutz, J. Shi, R. Jungwirth, T. Zweifel, H.-Y. Chiang and W. Petry

Introduction Irradiation with heavy ions from an accelerator source is an increasingly often used tool to quickly

reproduce and simulate certain effects of in-pile irradiation tests, avoiding the complexity and high costs of handling

highly radioactive samples. At the Maier-Leibnitz Laboratorium (MLL) of the Technische Universität München (TUM),

swift heavy ions have been applied in the development of Uranium-Molybdenum (UMo) based research reactor fuels

for more than 10 years. Since then, the technique has been advanced from feasibility over qualitative analysis to

quantitative prediction, including fission gas implantation.

Accelerator based

out-of-pile irradiation

In accelerator based out-of-pile

experiments, Iodine-127 with energy

of 80 MeV serves as representative

fission product. The usage of Iodine,

which has only one stable isotope,

permits for efficient extraction, acceleration

and – if necessary – detection

in the irradiated sample.

Samples are either prepared from

as-manufactured fuel plates or produced

as tailored model systems, depending

on the application. Cut-outs

of fuel plates usually are employed for

Research and Innovation

Heavy Ions Irradiation as a Tool to Minimize the Number of In-Pile Tests in UMo Fuel Development ı H. Breitkreutz, J. Shi, R. Jungwirth, T. Zweifel, H.-Y. Chiang and W. Petry

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