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High-precision efficiency calibration of a high-purity co-axial germanium detector

Authors :
Blank, B.
Souin, J.
Ascher, P.
Audirac, L.
Canchel, G.
Gerbaux, M.
Grevy, S.
Giovinazzo, J.
Guerin, H.
Nieto, T. Kurtukian
Matea, I.
Bouzomita, H.
Delahaye, P.
Grinyer, G. F.
Thomas, J. C.
Publication Year :
2014

Abstract

A high-purity co-axial germanium detector has been calibrated in efficiency to a precision of about 0.15% over a wide energy range. High-precision scans of the detector crystal and gamma-ray source measurements have been compared to Monte-Carlo simulations to adjust the dimensions of a detector model. For this purpose, standard calibration sources and short-lived on-line sources have been used. The resulting efficiency calibration reaches the precision needed e.g. for branching ratio measurements of super-allowed beta decays for tests of the weak-interaction standard model.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.1404.1246
Document Type :
Working Paper
Full Text :
https://doi.org/10.1016/j.nima.2014.12.071