Author's Accepted Manuscript

Correction to the recommended γ-ray emis-sion intensity of the 255.13 keV photons inthe decay of 113Sn

Aurelian Luca, Marie-Christine Lépy

PII: S0969-8043(14)00293-0DOI: http://dx.doi.org/10.1016/j.apradiso.2014.07.014Reference: ARI6735

To appear in: Applied Radiation and Isotopes

Received date: 1 April 2014Revised date: 19 July 2014Accepted date: 22 July 2014

Cite this article as: Aurelian Luca, Marie-Christine Lépy, Correction to therecommended γ-ray emission intensity of the 255.13 keV photons in the decayof 113Sn, Applied Radiation and Isotopes, http://dx.doi.org/10.1016/j.apradi-so.2014.07.014

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Correction to the recommended γ-ray emission intensity of the 255.13 keV photons

in the decay of 113Sn

Aurelian Luca1*, Marie-Christine Lépy2

1Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH),

P.O.B. MG-6, 077125 Magurele, Romania

2CEA-LIST/LNE-Laboratoire National Henri Becquerel (LNHB), CE Saclay, 91191 Gif-

sur-Yvette Cedex, France

* Corresponding author. Tel. +40 (0)21 4046163, Fax: +40 (0)21 4574945; E-mail:

aluca@nipne.ro

Abstract

The authors provide corrected measured values of the relative γ-ray emission intensity of

the 255.13 keV photons from the decay of 113Sn. Consequently, new recommended

values of the evaluated relative and absolute γ-ray emission intensity of the 255.13 keV

photons following the decay of 113Sn are proposed.

Highlights

• The 255.13 keV photon emission from the 113Sn decay was studied. • Corrected measured values of the relative γ-ray emission intensity are provided. • New recommended values of the evaluated photon emission intensity are

proposed.

Keywords: 113In photon emissions, relative intensity, gamma-ray spectrometry,

coincidence summing, nuclear decay data evaluation

2

In a previous article published by the authors (Luca and Lépy, 2012),

measurements of relative photon emission intensities of 113Sn were reported. In the same

paper, the results of a new nuclear decay data evaluation of 113Sn were presented, too.

In a recent study (Bruggeman et al., 2014), Dr. Michel Bruggeman (SCK-CEN,

Mol, Belgium) found a small error in the calibration curve of a HPGe detector, at very

short source-to-detector distance, when a 113Sn standard source was used. This error was

caused by the fact that the computer code ETNA underestimated the coincidence

summing corrections between gamma-rays and X-rays. Dr. Christophe Dulieu (CEA,

LIST/LNE-LNHB, France) investigated the problem, discovered an error in the

numbering of the 113In nuclear levels in ETNA and corrected it in an updated version of

the software. Consequently, in the article of Luca and Lépy (2012), for the 255.13 keV

gamma-rays, according to the computer code ETNA, version 5.5, revision 99, the total

coincidence summing correction factor is not 1.0, but 1.0073, with an assigned standard

uncertainty of 0.5%, coverage factor k=1. Then, the first two corrected values of the

measured relative 255.13 keV γ-ray emission intensity (Table 1, in the article of Luca and

Lépy (2012)), are: 3.261 ± 0.036 (result from 2009) and 3.253 ± 0.026 (result from 2010),

k=1. The reference is the relative γ-ray emission intensity of the 391.698 keV photons,

considered as 100.

Using these corrected values and the same statistical processing as described in

section 3.3 of the article, the new recommended value of the 255.13 keV γ-ray relative

intensity is 3.25 ± 0.04 [or, in an equivalent notation, 3.25 (4)], k=1. Consequently, the

recommended absolute value of the 255.13 keV γ-ray emission intensity is changed to

2.108·10-2 ± 0.027·10-2. The other recommended decay data remain unchanged.

3

The corrected values, together with any other new published measurements, will

be very useful for the future evaluations of the 113Sn nuclear decay data.

Acknowledgements

The authors express their thanks to Dr. Michel Bruggeman (SCK-CEN, Mol, Belgium)

for his contribution to improve the reliability of the published 113Sn γ-rays emission

intensities, and to Dr. Christophe Dulieu (CEA, LIST/LNE-LNHB, France) for providing

the updated version of ETNA.

References

Bruggeman, M., Vidmar, T., Amouriq, F., Verheyen, L., 2014. Efficiency

calibration of BEGe and extended range detectors. Appl. Radiat. Isot. 87, 356-360

Luca, A. and Lépy, M.-C., 2012. Measurements of relative photon emission

intensities and nuclear decay data evaluation of 113Sn. Appl. Radiat. Isot. 70, 1881-1885