Title: Imaging of Cultural Heritage Objects Using Neutron Resonances
Authors: PERELLI CIPPO E.BORELLA AlessandroGORINI G.KOCKELMANN W.MOXON M.POSTMA HansRHODES N.SCHILLEBEECKX PeterSCHOONENVELD E.TARDOCCHI M.DUSZ K.HAJNAL Z.BIRO K.PORCINAI S.ANDREANI C.FESTA G.
Citation: JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY vol. 26 no. 5 p. 992-999
Publisher: ROYAL SOC CHEMISTRY
Publication Year: 2011
JRC Publication N°: JRC64391
ISSN: 0267-9477
URI: www.rsc.org/jaas
http://publications.jrc.ec.europa.eu/repository/handle/JRC64391
DOI: 10.1039/c0ja00256a
Type: Articles in Journals
Abstract: Neutron resonances are the signature signals of a non-destructive elemental and isotopic analysis 10 technique in archaeological sciences. We report on Neutron Resonance Transmission Analysis and its capabilities as a bulk elemental imaging technique to test the homogeneity of samples and to localize elements of interest in archaeological samples and museum objects. A high neutron flux is required for imaging in order to achieve reasonable spatial resolution and to keep measurement times within realistic limits. A modular system for neutron resonance transmission analysis has been designed and installed at the INES beamline of the ISIS spallation neutron source as a part of the ANCIENT CHARM project. The main component is a neutron position sensitive transmission detector which is based on a 10x10 array of 6Li-glass crystals mounted on a pitch of 2.5 mm, resulting in a 25x25 mm2 active area. Transmission spectra are obtained by a measurement of the flight time of epithermal neutrons passing through an object. The transmission dips observed in a time-of-flight spectrum can be used to identify and quantify specific nuclides. In this paper the technique is described together with the data reduction and analysis procedures. In addition, preliminary results obtained from measurements on cultural heritage samples are discussed.
JRC Institute:Institute for Reference Materials and Measurements

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