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Proceedings Paper

Nondestructive testing of electron beam sterilization by means of an optically active marker material
Author(s): Thomas Härtling; Manuela Reitzig; Anton Mayer; Christiane Wetzel; Olaf Röder; Jürgen Schreiber; Jörg Opitz
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Paper Abstract

Secure proof of sterilization processes on packaging materials is an important issue in many economic sectors. In this context, electron beam sterilization is a highly effective low temperature technique. However, verifying the application of a sufficient electron dose is still difficult - especially on products with complex geometry. Here we report on an optical, hence fast and contactless approach which gives reliable evidence of a successful e-beam treatment. The technique is based on placing a suitable marker material (rare-earth based particles) inside or as a coating on the packaging material. By electron irradiation these particles change their optical properties and thus indicate the successful application of the electron beam.

Paper Details

Date Published: 19 March 2012
PDF: 6 pages
Proc. SPIE 8257, Optical Components and Materials IX, 825713 (19 March 2012);
Show Author Affiliations
Thomas Härtling, Fraunhofer Institute for Nondestructive Testing (Germany)
Manuela Reitzig, Fraunhofer Institute for Nondestructive Testing (Germany)
Anton Mayer, Gigatag GmbH (Germany)
Christiane Wetzel, Fraunhofer Institute for Electron Beam and Plasma Technology (Germany)
Olaf Röder, Fraunhofer Institute for Nondestructive Testing (Germany)
Jürgen Schreiber, Fraunhofer Institute for Nondestructive Testing (Germany)
Jörg Opitz, Fraunhofer Institute for Nondestructive Testing (Germany)

Published in SPIE Proceedings Vol. 8257:
Optical Components and Materials IX
Shibin Jiang; Michel J. F. Digonnet; J. Christopher Dries, Editor(s)

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