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Investigation of a Possible Material-Saving Approach of Sputtering Techniques for Radiopharmaceutical Target Production

Authors :
Alisa Kotliarenko
Oscar Azzolini
Giorgio Keppel
Cristian Pira
Juan Esposito
Source :
Applied Sciences, Vol 11, Iss 19, p 9219 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

Magnetron sputtering (MS) is a relatively new deposition technique, which is being considered among the cyclotron solid target (CST) manufacturing options now available, aiming at the medical radioisotopes yield for radiopharmaceutical production. However, the intrinsic high material losses during the deposition process do not permit its use with extremely expensive target materials, such as isotopically enriched metals/oxides. In this study, R&D technology for a new recovering shield is instead proposed to assess the dissipation of target material during the sputtering processes and, thus, an estimate of the material recovery that may be feasible and the related amount. The weight-loss analysis method is used to assess the material losses level inside the chamber during processing. In all tests carried out, a high-purity copper (99.99%) was used as a target material. As a result of this study, the material distribution for both magnetron and diode sputtering depositions can be calculated. The feasibility of the ultra-thick coatings growing, devoted to CST production, is demonstrated.

Details

Language :
English
ISSN :
20763417
Volume :
11
Issue :
19
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.f9c562d7c044257880a7597712f3d8e
Document Type :
article
Full Text :
https://doi.org/10.3390/app11199219