Measurement of absolute K X-ray emission intensities in the decay of 103mRh

J Riffaud; P Cassette; D Lacour; V Lourenço; I Tartès; M A Kellett; M Corbel; M-C Lépy; C Domergue; C Destouches; H Carcreff; O Vigneau

doi:10.1016/j.apradiso.2017.10.003

Measurement of absolute K X-ray emission intensities in the decay of ^103mRh

Appl Radiat Isot. 2018 Apr:134:399-405. doi: 10.1016/j.apradiso.2017.10.003. Epub 2017 Oct 4.

Authors

J Riffaud¹, P Cassette², D Lacour², V Lourenço², I Tartès², M A Kellett², M Corbel², M-C Lépy², C Domergue³, C Destouches³, H Carcreff⁴, O Vigneau⁵

Affiliations

¹ CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France. Electronic address: jonathan.riffaud@cea.fr.
² CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France.
³ CEA, DEN, DER, Laboratoire de Dosimétrie, Capteurs et Instrumentation (LDCI), Cadarache, 13108 Saint Paul-lez-Durance, France.
⁴ CEA, DEN, DRSN, Laboratoire de Support aux Programmes d'Irradiation (LSPI), CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France.
⁵ CEA, DEN, DEC, Laboratoire d'Analyses Radiochimiques et Chimiques (LARC), Cadarache, 13108 Saint Paul-lez-Durance, France.

PMID: 29031491
DOI: 10.1016/j.apradiso.2017.10.003

Abstract

A new experiment was designed to measure the photon emission intensities in the decay of ^103mRh. The rhodium samples were activated in the ISIS experimental nuclear reactor at CEA Saclay. The procedure includes an absolute activity measurement by liquid scintillation counting using the Triple-to-Double Coincidence Ratio method, followed by X-ray spectrometry using a high-purity germanium detector to determine the photon emission intensities. The new result (I_X = 0.0825 (17)) is derived with a significant reduction of the uncertainty.

Keywords: (103m)Rh; Photon emission intensity; Reactor dosimetry; TDCR method; X-ray spectrometry.

Publication types

Review