Evaluations of the decay data of 57 Co, 76 Br, 133m Xe and 142 Pr from the Decay Data Evaluation Project (DDEP) -2017

Xavier Mougeot, Valery P Chechev, Christophe Dulieu, Monica Galán, Mark

A Kellett, Nikolay K Kuzmenko, Sylvain Leblond, Alan L Nichols

► To cite this version:

Xavier Mougeot, Valery P Chechev, Christophe Dulieu, Monica Galán, Mark A Kellett, et al.. Evaluations of the decay data of 57 Co, 76 Br, 133m Xe and 142 Pr from the Decay Data Evaluation Project (DDEP) -2017. Metrologia, 2025, Guides, Standards and Conventions, 62 (6), pp.069001. 10.1088/1681-7575/ae1b01.cea-05387811

HAL Id: cea-05387811

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Submitted on 28 Nov 2025

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# Evaluations of the decay data of <sup>57</sup>Co, <sup>76</sup>Br, <sup>133m</sup>Xe and <sup>142</sup>Pr from the Decay Data Evaluation Project (DDEP) – 2017

Xavier Mougeot<sup>1,*</sup>,<sup>ORCID</sup>, Valery P. Chechev<sup>2,†</sup>, Christophe Dulieu<sup>1</sup>, Monica Galán<sup>3</sup>, Mark A. Kellett<sup>1</sup>, Nikolay K. Kuzmenko<sup>2</sup>, Sylvain Leblond<sup>1</sup>, Alan L. Nichols<sup>4</sup>

## Author affiliations

<sup>1</sup> Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), 91120 Palaiseau, France

<sup>2</sup> V.G. Khlopin Radium Institute, 28 Second Murinsky Ave, St. Petersburg, 194021, Russia

<sup>3</sup> Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Vienna International Centre, P.O. Box 1200, A-1400 Vienna, Austria

<sup>4</sup> Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom

* Corresponding author: <xavier.mougeot@cea.fr>

ORCID: 0000-0001-6161-8208

† Deceased.

## Main text

Since 1995, members of the Decay Data Evaluation Project (DDEP) have evaluated the decay data from different radionuclides of special interest for metrology or practical applications, e.g. nuclear medicine, monitoring and reactor shielding, etc. Since 2004, these evaluations have regularly been published under the auspices of the Bureau International des Poids et Mesures (BIPM) on behalf of the Consultative Committee for Ionizing Radiation (Comité Consultatif des Rayonnements Ionisants, CCRI).

DDEP evaluations finalised in 2017 are published with their Tables, which summarise the recommended data of the radionuclides and their decay schemes, and the evaluator's report describing the evaluation procedure (Comments).

Tables and Comments of the <sup>57</sup>Co evaluation are available here: [Co-57 Report](#).

Tables and Comments of the <sup>76</sup>Br evaluation are available here: [Br-76 Report](#).

Tables and Comments of the <sup>133m</sup>Xe evaluation are available here: [Xe-133m Report](#).

Tables and Comments of the <sup>142</sup>Pr evaluation are available here: [Pr-142 Report](#).

All evaluations have been peer-reviewed and approved for publication by the DDEP collaboration. They can be found, along with additional files in machine-readable formats, on
[the DDEP section of LNHB website](#). The list of past and present DDEP members is available [here](#).