@inproceedings{175bd44857bf4cc88ea9c378e8174b7c,
title = "Retrospective Dosimetry of Fast Neutrons Focused on the Reactions 93Nb(n,n')93Nbm and 54Fe(n,p)54Mn",
abstract = "An overview is given of practices for retrospective dosimetry based on extraction and counting of niobium and manganese present in typical pressure vessel materials. The main problem of counting structural materials is the overwhelming presence of the nuclide 60Co in the gamma-ray spectra of irradiated materials. Chemical separation of niobium and manganese is needed to determine the induced 93Nbm and 54Mn activities. Procedures have been developed for retrospective dosimetry applicable at normally equipped radiochemical laboratories. Chemical separation procedures have been applied followed by determination of the amount of niobium in dissolution after separation. Special attention has been given to the accurate counting of the very weak X rays of 93Nbm. Different techniques have been applied. Advantages, disadvantages, and the accuracy that can be achieved are discussed. Special attention has been given to the maximum accuracy that can be reached and the minimum amount of niobium that has to be collected to reach this accuracy.",
keywords = "retrospective dosimetry, neutron fluence, neutron damage, niobium, manganese, column anion exchange, liquid scintillation counting, neutron activation analysis",
author = "Voorbraak, {W. P.} and Tommi Kekki and Tom Ser{\'e}n and {Van Bockxstaele}, M. and J. Wagemans and Woittiez, {J. R. W.}",
year = "2007",
doi = "10.1520/STP1490-EB",
language = "English",
isbn = "978-0-8031-3412-6",
series = "ASTM Special Technical Publication",
publisher = "American Society for Testing and Materials (ASTM)",
number = "STP1490",
pages = "416--423",
editor = "David Vehar and David Gilliam and James Adams",
booktitle = "Reactor Dosimetry: 12th International Symposium on",
address = "United States",
note = "12th International Symposium on Reactor Dosimetry ; Conference date: 08-05-2005 Through 13-05-2005",
}