1 / 9

French National Atomic Energy Agency

French National Metrology Office. French National Atomic Energy Agency. Laboratoire National Henri Becquerel. Marie-Martine Bé CEA/LNHB F- 91191 Gif sur Yvette, FRANCE mmbe@cea.fr. Radioactivity metrology :.

anastasia-mosley
Download Presentation

French National Atomic Energy Agency

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. French NationalMetrology Office French National Atomic Energy Agency Laboratoire National Henri Becquerel Marie-Martine Bé CEA/LNHB F- 91191 Gif sur Yvette, FRANCE mmbe@cea.fr

  2. Radioactivity metrology : In order to take part in these exercises LNHB develops or improves apparatus or specific software : (Sources preparation, activity measurements, simulation codes, etc.) Ionic chromatography apparatus Activity measurement with the coincidence counting technique Tunable Source of X photons Liquid Scintillation counting Radon 222 Primary standard Gamma spectrometry software

  3. 1) Which ones ? The data describing the radioactive disintegration : half-life, emission energy and intensity of the various radiations, etc. 2) For which needs ? - metrology : detector calibration, simulation calculations, etc. - medical uses : diagnostic (Tc-99m, Tl-201, F-18, …), therapy (Ir-192, I-131, Y-90, …) - Nuclear fuel cycle : residual power in the reactor, waste management , control of the nuclear matter, etc. Nuclear and Atomic Data Evaluation Our lab is involved in the field of nuclear and atomic data evaluation for about 30 years.

  4. 1) Data Evaluation, i.e. from : - the published measured values - theoretical calculations - the consistency of the decay scheme 2) To make available the recommended data - « Nucleide », a computerized database, on CD rom - publication of articles and Tables on “paper” - publication of a website : www.nucleide.org - participation to working groups : RNVL, IAEA, etc. Our work : As primary standard laboratory, is to determine data which will be recommended data.

  5. Decay Data Evaluation Project • - The evaluation of data requires a certain time • - An international working group has been formed 1995 (DDEP): • LNHB (France) • PTB (Germany) • INEEL et LBNL (USA) • KRI (Russia) • With the objective of providing carefully recommended data

  6. The present members of the DDEP are : Marie-Martine Bé (LNHB) Edgardo Browne (LBNL) Richard G. Helmer (INEEL) Valery P. Chechev (KRI) T. Desmond MacMahon (NPL) Alan L. Nichols (IAEA) Rainer Dersch (Replaced E. Schönfeld) (PTB) Vanessa Chisté (LNHB) Coral Baglin (LBNL) Alice Wu (THU) Filip G. Kondev (ANL) and we would be happy to “recruit” new members

  7. Decay Data Evaluation Project • The goals of this group are : • - to define a methodology to be used in the evaluations, • - for specific data like Q-values or ICC, to choose a recommended set of values from others evaluators. • - to provide written documentation of all data used and all decisions and calculations. • the reviewing of each new evaluation by several members of the group. Then, the results of these DDEP works are compiled and edited by the LNHB.

  8. PUBLICATIONS Web site : www.nucleide.org

More Related