Radiochemical Determination of Rare Earth Elements in Proton-Irradiated Lead–Bismuth Eutectic

Hammer, Bernadette; Neuhausen, Jörg; Boutellier, Viktor; Wohlmuther, Michael; Türler, Andreas; Schumann, Dorothea (2015). Radiochemical Determination of Rare Earth Elements in Proton-Irradiated Lead–Bismuth Eutectic. Analytical chemistry, 87(11), pp. 5656-5663. American Chemical Society 10.1021/acs.analchem.5b00955

[img] Text
acs.analchem.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (3MB) | Request a copy

Various types of proton-irradiated lead–bismuth eutectic (LBE) samples from the MEGAPIE prototype spallation target were analyzed concerning their content of 148Gd, 173Lu, and 146Pm by use of α- and γ-spectrometry. A radiochemical separation procedure was developed to isolate the lanthanide fraction and to prepare thin samples for α-ray measurement. The results prove a substantial depletion of these three elements in bulk samples, whereas accumulation on the LBE/steel-interfaces was observed. The amount of material accumulated on surfaces was roughly estimated by relating the values measured on the sample surfaces to the total surface of the inner target walls. The amount of 148Gd, 173Lu, and 146Pm was then quantified by summing up the contributions from every sample type. The results show a reasonable agreement with theoretical predictions. The obtained results are of utmost importance for the evaluation of the performance of high-power spallation targets, especially concerning the residual nuclide production, the physicochemical behavior of the produced radionuclides during operation, and in terms of an intermediate or final disposal.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Türler, Andreas

Subjects:

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

ISSN:

0003-2700

Publisher:

American Chemical Society

Language:

English

Submitter:

Franziska Bornhauser-Rufer

Date Deposited:

02 Feb 2016 14:27

Last Modified:

03 Feb 2016 16:23

Publisher DOI:

10.1021/acs.analchem.5b00955

BORIS DOI:

10.7892/boris.75648

URI:

https://boris.unibe.ch/id/eprint/75648

Actions (login required)

Edit item Edit item
Provide Feedback