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Decay Data Evaluation Project

Decay Data Evaluation Project. - Status - Working programmes - Plans. DDEP Training Workshop. The first DDEP Training Session was held in Saclay from March 6 to 10, 2006, 16 participants from 10 countries attended. - Lectures on evaluation and statistical analysis of data were given ;

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Decay Data Evaluation Project

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  1. Decay Data Evaluation Project - Status - Working programmes - Plans

  2. DDEP Training Workshop The first DDEP Training Session was held in Saclay from March 6 to 10, 2006, 16 participants from 10 countries attended. - Lectures on evaluation and statistical analysis of data were given ; • Practical sessions to use computer codes were organized ; • Specific evaluations were presented ; • a visit to the Bureau International des Poids et Measures (BIPM) was organized, where Prof. Moscati welcomed the participants.

  3. List of evaluated nuclides • 1) First volume 1999: • 3H, 14C, 22Na, 26Al, 35S, 36Cl, 40K, 55Fe, 58Co, 60Co, 65Zn, 68Ga, 68Ge, 75Se, 95Zr, 95Nb, 95Nbm, 111In, 113Inm, 113Sn, 123Tem, 125I, 137Cs, 139Ce, 141Ce, 188Re, 192Ir, 194Ir, 207Bi. • 2) Two volumes of the Monographie BIPM-5, 2004 : • 7Be, 11C, 13N, 15O, 18F, 24Na, 32P, 33P, 44Sc, 44Ti, 46Sc, 51Cr, 54Mn, 56Mn, 57Co, 57Ni, 59Fe, 64Cu, 66Ga, 67Ga, 85Kr, 88Y, 89Sr, 93Nbm, 99Mo, 99Tcm, 109Cd, 110Ag, 110Agm, 123I, 123Tem, 125Sb, 129I, 131I, 131Xem, 133Ba, 140Ba, 140La, 152Eu, 153Gd, 153Sm, 154Eu, 155Eu, 166Ho, 166Hom, 169Yb, 170Tm, 177Lu, 201Tl, 203Hg, 204Tl, 208Tl, 212Pb, 212Bi, 212Po, 216Po, 220Rn, 224Ra, 226Ra, 227Th, 228Th, 238Pu, 240Pu, 241Am, 242Pu. • 3) The third volume of the Monographie BIPM-5 was published in 2006 : • 3H, 55Fe, 56Co, 60Co, 63Ni, 65Zn, 79Se, 90Sr, 90Ym, 90Y, 108Agm, 108Ag, 111In, 125Sb, 137Cs, 153Sm, 159Gd, 203Pb, 233Pa, 233Th, 234U, 236Np, 236Npm, 237U, 238U, 242Cm, 243Am, 244Cm.

  4. In preparation • Planned : • a new Monographie volume in October 2008 • Are available : • 133I, 133Xe, 133Xem, 139Ce, 206Tl, 210Tl, 210Pb, 210Bi, 214Pb, 214Po, 214Bi, 218At, 218Rn, 218Po, 222Rn, 226Ra, 237Np, 238Np, 239U, 239Np, 239Pu, 241Pu, 246Cm, 252Cf.

  5. Importance of the Monographie publication • Bureau International des Poids et Mesures (BIPM): • The Convention of the Metre (Convention du Mètre) is a treaty which gives authority to the General Conference on Weights and Measures (CGPM), the International Committee for Weights and Measures (CIPM) and the International Bureau of Weights and Measures (BIPM) to act in matters of world metrology, particularly concerning the demand for measurement standards of ever increasing accuracy, range and diversity, and the need to demonstrate equivalence between national measurement standards. • The principal activities of the BIPM in the field of ionizing radiation are to maintain the international reference standards for dosimetry and activity measurements. These standards are used in the BIPM key comparisons and their development and improvement is a major part of the research and development programme.

  6. BIPM Monographies • A series of monographs is published by the BIPM on behalf of the Consultative Committee for Ionizing Radiation (CCRI). The aim of this series of publications is to review various topics that are of importance for the measurement of ionizing radiation and radioactivity, in particular, those techniques normally used by participants in international comparisons. It is hoped that these publications will prove to be usefulreference volumes both for those who are already engaged in this field and for those who are approaching such measurements for the first time. • The purpose of this monograph, number 5 in the series, is to present therecommended values of nuclear and decay data for a wide range of radionuclides.

  7. DDEP Rules for evaluation Main stages : • critical analysis of published results • Results without uncertainties are not used • One result per laboratory included • Rejection of some values is always discussed • Private communications are, a priori, not accepted, except in the exceptional case where there is no published value available • Some uncertainties affecting individual results can be “revisited” in the light of the Guide to the expression of uncertainty measurement (BIPM GUM) • Statistical process

  8. Information • The next ICRM conference will be held in Bratislava • Dates will be end of May, beginning of June • See : http://www.smu.gov.sk/eng/main.html • Conference topics : • Nuclear decay data ; • Gamma spectrometry ; • Alpha and beta spectrometry ; • etc. • In all your publications don’t forget : • to provide the reader/evaluator with a full "Uncertainty Budget" in tabulated form, as recommended by the ICRM scientific committee

  9. Many thanks to the IFIN Team for hosting this second DDEP working session

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