High-quality evaluated atomic and nuclear data, such as half-life, decay mode and branching ratios, radiation energies and emission probabilities, are needed in applied research and for detector calibration.

In 1995 an international collaboration was formed, the Decay Data Evaluation Project, which includes members from the CEA/LNHB (France), PTB (Germany), INEEL (USA), KRI (Russia), LBNL (USA), NPL (United Kingdom), CIEMAT (Spain), CNDC (China), NIM (China), NIST (USA), IFIN-HH (Romania) with the objective of providing carefully produced recommended data.

The recommended data are available from this website hosted and updated by the Laboratoire National Henri Becquerel and through the BIPM Monographie-5 series, available here. At the International Committee for Radionuclide Metrology (ICRM) General Meeting, Oxford, September 2005, the Delegates formally approved the recommendation to use DDEP evaluated decay data in all future nuclear data studies.

More details on the DDEP can be found in this recent article and a brief description of the physical decay process and details of the evaluation methodology are available in this introduction.

Since 2006, biennial workshops/training sessions have been organized, starting in Saclay in 2006, then 2008 in Bucharest (organized by IFIN-HH), 2010 in Madrid (organized by CIEMAT), 2012 in Paris (organized by LNHB), 2014 in Bucharest (organized by IFIN-HH) and 2016 in Teddington (organized by NPL). The summary report of the DDEP meeting from 2001 offers some additional background information.

All enquiries regarding the recommended data and how they were established should be addressed directly to the author of the evaluation – see below.

Authors’ addresses

General enquiries regarding data and their publication may be addressed directly to:

Dr. Mark A. KELLETT
CEA/LNHB
91191 Gif-sur-Yvette, Cedex, France
Tel : 33-1-69-08-27-76
Fax : 33-1-69-08-26-19
E-mail: mark.kellett@cea.fr

List of evaluators:

Dr. Arzu ARINC
NPL, Centre for Ionising Radiation Metrology,
Teddington, Middlesex, TW11 0LW, United Kingdom
Tel : 44-20-8943-6699
Fax : 44-20-8943-6161
E-mail: arzu.arinc@npl.co.uk
Dr. Marie-Martine BÉ (retired)
CEA/LNHB
91191 Gif-sur-Yvette, Cedex, France
(Contact: Dr. Mark A. KELLETT)
Dr. Edgardo BROWNE
Nuclear Science Division
One Cyclotron Road
MS 88RO192
Berkeley, CA 94720-8101, U.S.A.
Tel : (510) 486-7647
Fax : (510) 486-5757
E-mail: ebrowne@lbl.gov
Dr. Valery P. CHECHEV and Dr. Nikolay K. KUZMENKO
V.G. Khlopin Radium Institute
28, 2nd Murinsky Ave., 194021 St. Petersburg, Russia
Tel : 007 (812) 2973706
Fax : 007 (812) 2978095
E-mail: chechev@khlopin.ru
Dr. Vanessa CHISTÉ
CEA/LNHB
91191 Gif-sur-Yvette, Cedex, France
Tel : 33-1-69-08-63-07
Fax : 33-1-69-08-26-19
E-mail: vanessa.chiste@cea.fr
Dr. Rainer DERSCH
Physikalisch-Technische Bundesanstalt
Bundesallee 100, 38116 Braunschweig, Germany
Fax : 49-0531-592-6015
E-mail: rainer.dersch@ptb.de
Dr. Mónica GÁLAN
Consultant
CTBTO Preparatory Commission
Vienna International Centre
PO Box 1200
1400 Vienna, Austria
E-mail: Monica.Galan@ctbto.org
Dr. Richard G. HELMER (deceased)
Idaho National Engineering and Environmental Laboratory
Dr. Xiaolong HUANG and Dr. Baosong WANG
China Nuclear Data Center, China Institute of Atomic Energy
P.O.Box 275 (41), Beijing 102413, China
E-mail: huang@ciae.ac.cn
Dr. Tibor KIBÉDI
Department of Nuclear Physics
Australian National University
Canberra, Australia, ACT 0200
Tel: +61-02-61252093
Fax: +61-02-61250748
E-mail: Tibor.Kibedi@anu.edu.au
Web page: https://physics.anu.edu.au/nuclear/people/profile.php?ID=143
Dr. Mark A. KELLETT
CEA/LNHB
91191 Gif-sur-Yvette, Cedex, France
Tel : 33-1-69-08-27-76
Fax : 33-1-69-08-26-19
E-mail: mark.kellett@cea.fr
Dr. Filip G. KONDEV
Nuclear Data Program, Nuclear Engineering Division
Argonne National Laboratory
9700 South Cass Ave. Argonne, ILL 60439, USA
Tel : 1-(630) 252-4484
Fax : 1-(630) 252-5287
E-mail: kondev@anl.gov
Dr. Aurelian LUCA
IFIN-HH/Radionuclide Metrology Laboratory/CPR department
30 Reactorului Street
PO Box MG-6, Magurele, Ilfov County , post code 077125, Romania
Tel: +40 (0)21 404 61 63
Fax: +40 (0)21 457 44 40
E-mail: aluca@ifin.nipne.ro
Dr. T. Desmond MacMAHON (retired)
NPL, Centre for Ionising Radiation Metrology,
Teddington, Middlesex, TW11 0LW, United Kingdom
(Contact: Dr. Andy PEARCE)
Dr. Xavier MOUGEOT
CEA/LNHB
91191 Gif-sur-Yvette, Cedex, France
Tel : 33-1-69-08-23-32
Fax : 33-1-69-08-26-19
E-mail: xavier.mougeot@cea.fr
Dr. Alan L. NICHOLS
Visiting Professor, Department of Physics, University of Surrey,
Guildford, GU2 7XH, UK.
Adjunct Professor, Manipal Institute of Technology, Manipal University,
Madhav Nagar, Manipal 576104, Karnataka, India.
E-mail: alanl.nichols@btinternet.com
Dr. Andy PEARCE
NPL, Centre for Ionising Radiation Metrology,
Teddington, Middlesex, TW11 0LW, United Kingdom
Tel : 44-20-8943-6699
Fax : 44-20-8943-6161
E-mail: andy.pearce@npl.co.uk
Dr. Eckart SCHÖNFELD (retired)
Physikalisch-Technische Bundesanstalt
Bundesallee 100, 38116 Braunschweig, Germany
(Contact: Dr. Rainer DERSCH)
Dr. Vito VANIN and Dr. Rui M. CASTRO
Instituto de Física, Universidade de São Paulo
Caixa Postal 66318
05315-970 São Paulo, SP, Brazil
Tel : 55-11-3091-6853
Fax : 55-11-3091-6832
E-mail: Vanin@if.usp
Dr. Shiu-Chin WU
Physics Department
Tsing Hua University
Taiwan
E-mail: scwu@phys.nthu.edu.tw
Dr. Brian ZIMMERMAN
National Institute of Standards and Technology
100 Bureau Dr.
Gaithersburg, MD 20899-8462
USA
E-mail: brian.zimmerman@nist.gov