Title: Determination of dead-layer variation in HPGe detectors
Authors: ANDREOTTI ERICAHULT MikaelMARISSENS GerdLUTTER GUILLAUMEGARFAGNINI A.HEMMER S.VON STURM K.
Citation: APPLIED RADIATION AND ISOTOPES vol. 87 p. 331-335
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2014
JRC N°: JRC82733
ISSN: 0969-8043
URI: http://dx.doi.org/10.1016/j.apradiso.2013.11.046
http://publications.jrc.ec.europa.eu/repository/handle/JRC82733
DOI: 10.1016/j.apradiso.2013.11.046
Type: Articles in periodicals and books
Abstract: The dead layer uniformity of the top surface of two high purity germanium detectors has been studied using a novel automated scanning set-up that allows a fine-grained topography of a detector's top and lateral surfaces. Comparisons between measurements and Monte Carlo simulations allowed implementation of a a dead-layer variation in the detector model, which reproduces the measurements results. The effect of the non-uniform dead-layer on activity determinations based on low-energy γ-rays (i.e. below 100keV) has been determined to be of the order of 10% or more.
JRC Directorate:Health, Consumers and Reference Materials

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