title: Determination of X- and gamma-ray emission intensities in the decay of (131)I.
abstract: The activity per unit mass of an iodine-131 solution was absolutely standardized by both the 4πβ-γ coincidence method and the 4πγ counting technique. The calibrated solution was used to prepare point sources after a preliminary deposit of AgNO3 to prevent the loss of volatile iodine. Relative and absolute photon emission intensities of 15 sgamma-rays and those of the two K X-rays of xenon were determined by gamma-ray spectrometry, with relative uncertainties of 0.8% for the three main emissions.
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât 602, PC111, 91191 Gif-sur-Yvette Cedex, France. Electronic address: marie-christine.lepy@cea.fr.
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Lépy
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât 602, PC111, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Laurine
authors.initials: L
authors.lastname: Brondeau
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât 602, PC111, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Bobin
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât 602, PC111, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Valérie
authors.initials: V
authors.lastname: Lourenço
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât 602, PC111, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Cheick
authors.initials: C
authors.lastname: Thiam
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât 602, PC111, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Marie-Martine
authors.initials: MM
authors.lastname: Bé
keywords: (131)I; 4πβ–γ coincidence; 4πγ counting; Gamma-ray spectrometry; Photon emission intensities