Library of Recommended Actinide Decay Data, 2011

442 Pages·2013·2.58 MB·English

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High quality decay data are an essential input across a wide
range of nuclear applications, and none more so than in the e
case of the actinides and their related decay chain data. Well n
defi ned nuclear data are essential to ensure safe procedures d
within mining operations, various nuclear fuel cycles for energy e
generation, environmental monitoring, specifi c analytical d
techniques, and diagnostic and radiotherapeutic treatments in
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nuclear medicine. A major objective of the IAEA nuclear data
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programme is to promote improvements in the accuracy and
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quality of nuclear data used in science and technology. The i
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contents of this report constitute the results of a coordinated
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research project established to assemble an updated decay data d
library for actinides. Recommended half-lives and decay scheme e
data have been comprehensively evaluated, and are tabulated in
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terms of a carefully selected set of actinide radionuclides.
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Technical Editors
M.A. Kellett, A.L. Nichols
1
INTERNATIONAL ATOMIC ENERGY AGENCY
VIENNA
ISBN 978 –92–0–143910–9
LIBRARY OF RECOMMENDED
ACTINIDE DECAY DATA, 2011
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LIBRARY OF RECOMMENDED
ACTINIDE DECAY DATA, 2011
Technical Editors
M.A. KELLETT, A.L. NIChOLs
INTERNATIONAL ATOMIC ENERgY AgENCY
VIENNA, 2013
CoPYrIgHt notICE
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Printed by the IAEA in Austria
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sTI/PUB/1618
IAEA Library Cataloguing in Publication Data
Library of recommended actinide decay data, 2011. — Vienna : International Atomic
Energy Agency, 2013.
p. ; 30 cm.
sTI/PUB/1618
IsBN 978–92–0–143910–9
Includes bibliographical references.
1. Actinide elements — Decay. 2. Radioactive decay — Measurement.
3. Radioactive decay — Tables. I. International Atomic Energy Agency.
IAEAL 13–00844
forEworD
A major objective of the nuclear data programme within the IAEA is to devise and promote improvements in
the quality of nuclear data used in science and technology. Work of this nature was performed by participants in an
IAEA coordinated research project (CRP) formulated in 2005 to produce an updated decay data library of important
actinides recommended for adoption in various nuclear applications. The specific objectives of this project were
to improve the accuracy of heavy element and actinide decay data in order to: determine more accurately the
effects of these recommended data on fission reactor fuel cycles; aid in improved assessments of nuclear waste
management procedures; provide more reliable decay data for nuclear safeguards; assess with greater confidence
the environmental impact of specific actinides and other heavy element radionuclides generated through their
decay chains; and extend the scientific knowledge of actinide decay characteristics for nuclear physics research and
non-energy applications.
some CRP participants were able to perform a number of highly precise measurements, based on the
availability of suitable source materials, and systematic in depth evaluations of the requested decay data. These
requested data consisted primarily of half-lives, and α, β–, EC/β+, Auger electron, conversion electron, X ray and
γ ray energies and emission probabilities, all with uncertainties expressed at the 1σ confidence level.
The IAEA established a CRP entitled Updated Decay Data Library for Actinides in mid-2005. During the
course of discussions at the coordinated research meetings, the participants agreed to undertake work programmes
of measurements and evaluations, to be completed by the end of 2010. The results of the evaluation studies
undertaken by the CRP are presented in Annex I. Annexes II–V include descriptions of the sources of the evaluated
decay data and each individual evaluation process in detail, as well as data files in the Evaluated Nuclear structure
Data File (ENsDF) format and in the Evaluated Nuclear Data File (ENDF) format.
The IAEA is grateful to members of the Decay Data Evaluation Project and laboratories affiliated with
the International Committee for Radionuclide Metrology for their assistance and support in the work. Particular
appreciation is extended to V. Chisté and C. Dulieu from the Laboratoire National henri Becquerel, France, for
their assistance in the preparation of Annexes I and II. The IAEA officer responsible for this publication was
M.A. Kellett of the Division of Physical and Chemical sciences.
ACknowLEDgEmEnts
The following co-workers and members of the wider community played important roles in ensuring that the
agreed decay data evaluations were undertaken and reviewed: A. Arinc and T.D. MacMahon, National Physical
Laboratory, United Kingdom; E. Browne, Lawrence Berkeley National Laboratory, United states of America;
V. Chisté and C. Dulieu, Laboratoire National henri Becquerel/Commissariat à l’énergie atomique, France;
R.g. helmer†, Idaho National Laboratory, United states of America; T. Kibédi, Australian National University,
Canberra, Australia; B. singh, McMaster University, Canada; J.K. Tuli, Brookhaven National Laboratory, United
states of America; and Wang Baosong, China Nuclear Data Center, China Institute of Atomic Energy, China.
† Deceased.
EDITORIAL NOTE
Although great care has been taken to maintain the accuracy of information contained in this publication, neither the IAEA nor
its Member States assume any responsibility for consequences which may arise from its use.
The use of particular designations of countries or territories does not imply any judgement by the publisher, the IAEA, as to the
legal status of such countries or territories, of their authorities and institutions or of the delimitation of their boundaries.
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The IAEA has no responsibility for the persistence or accuracy of URLs for external or third party Internet web sites referred to
in this book and does not guarantee that any content on such web sites is, or will remain, accurate or appropriate.
The annexes have been prepared from the original material as submitted for publication and have not been edited by the
editorial staff of the IAEA.
ContEnts
1. 1. INTRODUCTION ................................................................. 1
1.1. Background ................................................................... 1
1.2. Objectives .................................................................... 1
1.2.1. Composition of the coordinated research project ............................... 1
1.2.2. Requirements ........................................................... 2
1.2.3. Measurements .......................................................... 2
1.2.4. Evaluations ............................................................ 2
1.3. scope ........................................................................ 2
1.4. Update of the database ........................................................... 3
2. EVALUATION METhODOLOgY ..................................................... 9
2.1. Averaging process .............................................................. 9
2.2. Data consistency ............................................................... 9
2.3. status ........................................................................ 10
3. CONCLUsIONs .................................................................... 18
REFERENCEs .......................................................................... 19
ANNEX I: RECOMMENDED DECAY DATA ................................................. 21
sYMBOLs AND NOTATION ......................................................... 23
hg-206 ............................................................................ 25
Tl-206 ............................................................................ 29
Tl-207 ............................................................................ 33
Tl-208 ............................................................................ 37
Tl-209 ............................................................................ 43
Tl-210 ............................................................................ 47
Pb-209 ............................................................................ 51
Pb-210 ............................................................................ 53
Pb-211 ............................................................................ 57
Pb-212 ............................................................................ 61
Pb-214 ............................................................................ 65
Bi-210 ............................................................................ 69
Bi-211 ............................................................................ 71
Bi-212 ............................................................................ 75
Bi-213 ............................................................................ 79
Bi-214 ............................................................................ 83
Bi-215 ............................................................................ 95
Po-210 ............................................................................ 99
Po-211 ............................................................................ 103
Po-212 ............................................................................ 107
Po-213 ............................................................................ 109
Po-214 ............................................................................ 111
Po-215 ............................................................................ 113
Po-216 ............................................................................ 115
Po-218 ............................................................................ 117
At-211 ............................................................................ 119
At-215 ............................................................................ 123
At-217 ............................................................................ 125
At-218 ............................................................................ 127
At-219 ............................................................................ 129
Rn-217 ............................................................................ 131
Rn-218 ............................................................................ 133
Rn-219 ............................................................................ 135
Rn-220 ............................................................................ 139
Rn-222 ............................................................................ 141
Fr-221 ............................................................................. 143
Fr-223 ............................................................................. 147
Ra-223 ............................................................................ 155
Ra-224 ............................................................................ 161
Ra-225 ............................................................................ 165
Ra-226 ............................................................................ 167
Ra-228 ............................................................................ 171
Ac-225 ............................................................................ 173
Ac-227 ............................................................................ 181
Ac-228 ............................................................................ 187
Th-228 ............................................................................ 199
Th-229 ............................................................................ 203
Th-231 ............................................................................ 215
Th-232 ............................................................................ 221
Th-233 ............................................................................ 225
Th-234 ............................................................................ 233
Pa-231 ............................................................................ 237
Pa-233 ............................................................................ 243
Pa-234 ............................................................................ 249
Pa-234m ........................................................................... 265
U-232 ............................................................................. 273
U-233 ............................................................................. 277
U-234 ............................................................................. 287
U-235 ............................................................................. 291
U-236 ............................................................................. 297
U-237 ............................................................................. 301
U-238 ............................................................................. 305
U-239 ............................................................................. 309
Np-236 ............................................................................ 317
Np-236m .......................................................................... 321
Np-237 ............................................................................ 325
Np-238 ............................................................................ 331
Np-239 ............................................................................ 335
Pu-238 ............................................................................ 341
Pu-239 ............................................................................ 347
Pu-240 ............................................................................ 357
Pu-241 ............................................................................ 363
Pu-242 ............................................................................ 367
Am-241 ........................................................................... 371
Am-242 ........................................................................... 381
Am-242m .......................................................................... 385
Am-243 ........................................................................... 389
Am-244 ........................................................................... 393
Am-244m .......................................................................... 397
Cm-242 ........................................................................... 401
Cm-243 ........................................................................... 405
Cm-244 ........................................................................... 411
Cm-245 ........................................................................... 415
Cm-246 ........................................................................... 419
Cf-252 ............................................................................ 423
CONTRIBUTORs TO DRAFTINg AND REVIEW ............................................. 427
CONTENTs OF ThE ACCOMPANYINg CD-ROM:
ANNEX II: COMMENTs ON EVALUATIONs
ANNEX III: DATA FILEs IN ThE EVALUATED NUCLEAR sTRUCTURE DATA FILE (ENsDF) FORMAT
ANNEX IV: DATA FILEs IN ThE EVALUATED NUCLEAR DATA FILE (ENDF) FORMAT
ANNEX V: LIsT OF 85 NUCLEI EVALUATED