Filters
Results 1 - 10 of 186
Results 1 - 10 of 186.
Search took: 0.022 seconds
Sort by: date | relevance |
AbstractAbstract
[en] Evaluated: July/August 2001. Re-evaluated: January 2004 and April 2010. Evaluation Procedures: Limitation of Relative Statistical Weight Method (LWM) was applied to average numbers throughout the evaluation. The uncertainty assigned to the average value was always greater than or equal to the smallest uncertainty of the values used to calculate the average. Decay Scheme: A relatively simple decay scheme was constructed from the alpha-particle studies of 1962Wa28, 1969Pe17, 1971So15 and 1984Bo15, and the gamma-ray measurements of 1969Pe17, 1972DaZA, 1977Ku15, 1982Sa36, 1983Sc13, 1983Va22, 1984Bo15, 1984Ge07 and 1992Li05. Only the gamma-ray studies of 1977Ku15 provide any detail beyond the 240.986 keV gamma ray; all other measurements are dedicated to the determination of the absolute emission probability of the 240.986 keV gamma ray. A weighted mean emission probability was determined for this transition, and the other emission probabilities as measured by 1977Ku15 were subsequently adjusted. Cluster decay has been observed by 1985Pr01 and 1991Ho15, and reviewed by 1995Ar33 and 1997Tr17. 14C emissions were detected with a branching fraction of 5 (1) 10-11. However, this decay mode has not been included in the decay-data summary section
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 7 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Tabs., refs.

Record Type
Book
Country of publication
ALKALINE EARTH ISOTOPES, ALPHA DECAY RADIOISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CARBON 14 DECAY RADIOISOTOPES, CARBON ISOTOPES, CHARGED PARTICLES, DAYS LIVING RADIOISOTOPES, DECAY, DIMENSIONLESS NUMBERS, ELECTROMAGNETIC RADIATION, ENERGY RANGE, EVEN-EVEN NUCLEI, HEAVY ION DECAY RADIOISOTOPES, HEAVY NUCLEI, IONIZING RADIATIONS, ISOTOPES, LIGHT NUCLEI, NUCLEAR DECAY, NUCLEI, RADIATIONS, RADIOISOTOPES, RADIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] Evaluated: April 2007/April 2010. Evaluation Procedure: Limitation of Relative Statistical Weight Method (LWM) was applied to average the decay data when appropriate. Decay Scheme: A simple IT-decay mode dominates the decay scheme of 242Amm. The small α branch is complex, and many features of this decay mode remain unresolved despite the extensive study of Hoff et al. (1990Ho02). Some confusion arose during the course of the 1950s as to the correct identity of the ground and metastable states of 242Am. This problem was resolved in 1960 by Asaro et al. (1960As05) when the 16-hour half-life activity was shown to be the ground state and the longer-lived 140-year isomer was defined as the metastable state. The α branch has been determined by Barnes et al. (1959Ba22) and Zelenkov et al. (1979Ze05) to be 0.46 (1)%. Hoff et al. have studied the emissions from the α-decay mode in considerable detail (1990Ho02), and the more modest measurements of Baranov et al. (1979Ba67) and Vylov et al. (1980VyZZ) show reasonable agreement with this extensive data set. A small spontaneous fission branch of 1.5 (6) x 10-8% has been quantified by Caldwell et al. (1967Ca04), while an upper limit of 4.8 x 10-9% has been specified by Zelenko et al. (1986Ze06)
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 12 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Tabs., refs.

Record Type
Book
Country of publication
ACTINIDE NUCLEI, ALPHA DECAY RADIOISOTOPES, AMERICIUM ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, DECAY, ELECTRON CAPTURE RADIOISOTOPES, ENERGY LEVELS, EXCITED STATES, FISSION, HEAVY NUCLEI, HOURS LIVING RADIOISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, NUCLEAR DECAY, NUCLEAR REACTIONS, NUCLEI, ODD-ODD NUCLEI, RADIOISOTOPES, SPONTANEOUS FISSION RADIOISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
Nichols, A.L.
International Atomic Energy Agency, Nuclear Data Section, Vienna (Austria)1993
International Atomic Energy Agency, Nuclear Data Section, Vienna (Austria)1993
AbstractAbstract
[en] The decay data of various radionuclides have been evaluated on the basis of a series of well-defined specifications and the requirements of the UK nuclear power, fuel reprocessing and waste management programmes. These radionuclides are primarily activation products and standards that are commonly used in gamma-ray spectroscopy. Recommended data include half-life, branching fractions, alpha, beta and gamma-ray energies and emission probabilities, total decay energy, mean alpha, beta and gamma energies, internal conversion coefficients, and all associated uncertainties. Computer-based files have been generated in ENDF-6 format, including lists of the references used to produce the proposed decay scheme and comments that identify any inadequacies. (author)
Primary Subject
Source
IAEA-NDS-Documentation Series; Mar 1993; 35 p; 13 refs, 3 tabs
Record Type
Report
Literature Type
Numerical Data
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Nichols, A.L.
AEA Reactor Services, Winfrith (United Kingdom)1990
AEA Reactor Services, Winfrith (United Kingdom)1990
AbstractAbstract
[en] The decay data of radionuclides within the 4n series have been evaluated on the basis of specifications by staff within BNFL, Sellafield. Emphasis was placed on the beta-electron decay products of Np-236m and Np-236g through Pu-236 and U-232 to Tl-208 and stable Pb-208. Comprehensive evaluations were undertaken to determine the decay schemes for all of these radionuclides so that precise and definitive decay data could be recommended, including half-lives, branching fractions, alpha, beta and gamma-ray emission probabilities and their associated uncertainties. (author)
Primary Subject
Source
Apr 1990; 127 p; ISBN 0 851 82107 3;
; CONTRACT H55699A; H64631A; Available from H.M. Stationery Office, London, price Pound 18.00

Record Type
Report
Literature Type
Numerical Data
Report Number
Country of publication
BISMUTH 212, BRANCHING RATIO, EVALUATED DATA, HALF-LIFE, INTERNAL CONVERSION RADIOISOTO, LEAD 212, MAGNESIUM 28 DECAY RADIOISOTOP, MILLISEC LIVING RADIOISOTOPES, NANOSEC LIVING RADIOISOTOPES, NEPTUNIUM 236, NUCLEAR DECAY, PLUTONIUM 236, POLONIUM 212, POLONIUM 216, RADIUM 224, RADON 220, SPONTANEOUS FISSION RADIOISOTO, THALLIUM 208, THORIUM 228, URANIUM 232
ACTINIDE NUCLEI, ALPHA DECAY RADIOISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BISMUTH ISOTOPES, CARBON 14 DECAY RADIOISOTOPES, DATA, DAYS LIVING RADIOISOTOPES, DECAY, ELECTRON CAPTURE RADIOISOTOPES, EVEN-EVEN NUCLEI, HEAVY ION DECAY RADIOISOTOPES, HEAVY NUCLEI, HOURS LIVING RADIOISOTOPES, INFORMATION, ISOTOPES, LEAD ISOTOPES, MINUTES LIVING RADIOISOTOPES, NEON 24 DECAY RADIOISOTOPES, NEPTUNIUM ISOTOPES, NUCLEI, NUMERICAL DATA, ODD-ODD NUCLEI, PLUTONIUM ISOTOPES, POLONIUM ISOTOPES, RADIOISOTOPES, RADIUM ISOTOPES, RADON ISOTOPES, SECONDS LIVING RADIOISOTOPES, THALLIUM ISOTOPES, THORIUM ISOTOPES, URANIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Evaluated: July/August 2001. Re-evaluated: January 2004 and May 2010. Evaluation Procedures: Limitation of Relative Statistical Weight Method (LWM) was applied to average numbers throughout the evaluation. The uncertainty assigned to the average value was always greater than or equal to the smallest uncertainty of the values used to calculate the average. Decay Scheme: 212Po is an extremely short-lived radionuclide populated via the beta decay of 212Bi and the alpha decay of 216Rn. 100% alpha decay of 212Po occurs directly to the ground state of 208Pb (2005Br03)
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 2 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Tabs., refs.

Record Type
Book
Country of publication
ALPHA DECAY RADIOISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BISMUTH ISOTOPES, DECAY, ENERGY LEVELS, EVEN-EVEN NUCLEI, HEAVY NUCLEI, HOURS LIVING RADIOISOTOPES, ISOTOPES, LEAD ISOTOPES, MICROSECONDS LIVING RADIOISOTOPES, MINUTES LIVING RADIOISOTOPES, NANOSECONDS LIVING RADIOISOTOPES, NUCLEAR DECAY, NUCLEI, ODD-ODD NUCLEI, POLONIUM ISOTOPES, RADIOISOTOPES, RADON ISOTOPES, SECONDS LIVING RADIOISOTOPES, STABLE ISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] Evaluated: September 2010. Evaluation Procedure: Limitation of Relative Statistical Weight Method (LWM) was applied to average numbers throughout the evaluation. The uncertainty assigned to the average value was always greater than or equal to the smallest uncertainty of the values used to calculate the average. Decay Scheme: Very little of substance can be gleaned from the literature concerning the decay characteristics of 219At (2001Br31). Although no γ or β- emissions have been observed, an alpha group at 6.27 MeV was assigned to 219At by Hyde and Ghiorso (1953Hy83). A simple decay scheme has been constructed with little confidence from this early study. Alpha and β- feeding directly to the ground states of daughter 215Bi and 219Rn were assumed, but these processes were neither observed satisfactorily nor quantified experimentally. Spin and parity of 7/2- were tentatively assigned to the ground state of 219At to align with 5/2+ identified with the ground state of daughter 219Rn (2001Br31), in order to define the proposed single beta-particle emission as first forbidden non-unique. Further spectral studies are required to assemble and quantify the decay scheme of 219At with much greater confidence
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 3 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Tabs., refs.

Record Type
Book
Country of publication
ALPHA DECAY RADIOISOTOPES, ANGULAR MOMENTUM, ASTATINE ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BISMUTH ISOTOPES, CHARGED PARTICLES, DECAY, ENERGY LEVELS, ENERGY RANGE, EVEN-ODD NUCLEI, HEAVY NUCLEI, IONIZING RADIATIONS, ISOTOPES, MEV RANGE, MINUTES LIVING RADIOISOTOPES, NUCLEAR DECAY, NUCLEI, ODD-EVEN NUCLEI, PARTICLE PROPERTIES, RADIATIONS, RADIOISOTOPES, RADON ISOTOPES, SECONDS LIVING RADIOISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] Evaluated: October 2010. Evaluation Procedure: Limitation of Relative Statistical Weight Method (LWM) was applied to average numbers throughout the evaluation. The uncertainty assigned to the average value was always greater than or equal to the smallest uncertainty of the values used to calculate the average. Decay Scheme A reasonably comprehensive decay scheme has been derived from the alpha-particle studies of 1962Wa18, 1991Ry01 and 1999Li05, and the gamma-ray measurements of 1967Da20, 1968Br17, 1970Da09, 1970Kr08 and 1999Li05
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 9 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Tabs., refs.

Record Type
Book
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] Evaluated: January 2007/February 2009. Updated comments: Dec. 2010. Evaluation Procedure: Limitation of Relative Statistical Weight Method (LWM) was applied to average the decay data when appropriate (but see below). Decay Scheme: A relatively simple decay scheme was constructed from the gamma-ray studies of 1962Va08, 1963Ha29, 1967Sc34 and 1984Ho02. Only the gamma-ray measurements of Hoff et al. provide any estimates of the uncertainties in the gamma-ray probabilities expressed in terms of their relative intensity per 100 neutron captures in a high-flux reactor (1984Ho02). All other studies contained no information with respect to their overall uncertainties. Thus, no weighted mean data could be derived, and the data of 1984Ho02 were adopted wholesale and re-adjusted when deemed necessary (expressed in terms of the 743.977-keV gamma-ray emission probability (100%)). Further measurements are merited to quantify the gamma-ray emission probabilities and decay scheme with greater certainty
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 5 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Tabs, refs.

Record Type
Book
Country of publication
ACTINIDE NUCLEI, AMERICIUM ISOTOPES, BARYON REACTIONS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, DECAY, ELECTROMAGNETIC RADIATION, ELECTRON CAPTURE RADIOISOTOPES, ENERGY RANGE, HADRON REACTIONS, HEAVY NUCLEI, HOURS LIVING RADIOISOTOPES, IONIZING RADIATIONS, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, ODD-ODD NUCLEI, RADIATIONS, RADIOISOTOPES, SPONTANEOUS FISSION RADIOISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
Nichols, A.L.
UKAEA Atomic Energy Establishment, Winfrith1981
UKAEA Atomic Energy Establishment, Winfrith1981
AbstractAbstract
[en] An evaluation has been made of the decay of 235Np, a nuclide that has become popular for monitoring neptunium chemistry in the environment. Compared with other radioactive nuclides, 235Np produces few emissions that are suitable for quantitative analysis. A semi-theoretical study was undertaken, and it is recommended that four K-shell X rays are used to monitor 235Np. (U.K.)
Primary Subject
Source
Nov 1981; 15 p
Record Type
Report
Literature Type
Numerical Data
Report Number
Country of publication
ALPHA DECAY, AUGER ELECTRON SPECTROSCOPY, DAUGHTER PRODUCTS, DECAY, EVALUATED DATA, K SHELL, LIQUID WASTES, MARINE DISPOSAL, MASS SPECTROSCOPY, NEPTUNIUM, NEPTUNIUM 235, NEPTUNIUM 237, QUANTITATIVE CHEMICAL ANALYSIS, RADIATION MONITORING, RADIOACTIVE EFFLUENTS, TRACER TECHNIQUES, X-RAY EMISSION ANALYSIS, X-RAY SPECTROSCOPY
ACTINIDE NUCLEI, ACTINIDES, ALPHA DECAY RADIOISOTOPES, BETA DECAY RADIOISOTOPES, CHEMICAL ANALYSIS, DATA, ELECTRON CAPTURE RADIOISOTOPES, ELECTRON SPECTROSCOPY, ELECTRONIC STRUCTURE, ELEMENTS, HEAVY NUCLEI, INFORMATION, ISOTOPE APPLICATIONS, ISOTOPES, MANAGEMENT, METALS, MONITORING, NEPTUNIUM ISOTOPES, NONDESTRUCTIVE ANALYSIS, NUCLEAR DECAY, NUCLEI, NUMERICAL DATA, ODD-EVEN NUCLEI, RADIOACTIVE MATERIALS, RADIOACTIVE WASTES, RADIOISOTOPES, SPECTROSCOPY, TRANSURANIUM ELEMENTS, WASTE DISPOSAL, WASTE MANAGEMENT, WASTES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Evaluated: July/August 2001. Re-evaluated: January 2004 and July 2010. Evaluation Procedures: Limitation of Relative Statistical Weight Method (LWM) was applied to average numbers throughout the evaluation. The uncertainty assigned to the average value was always greater than or equal to the smallest uncertainty of the values used to calculate the average. Decay Scheme: The ground state of 208Tl (Jπ = 5+) decays by beta minus emission to various excited levels of 208Pb. A consistent decay scheme has been derived, assuming no direct beta decay to both the 2614.55-keV nuclear level and ground state of 208Pb (based on spin-parity considerations). This decay scheme is primarily based on the gamma-ray measurements of 1960Em01, 1960Sc07, 1961Si11, 1969Au10, 1969La23, 1969Pa02, 1972DaZA/1973Da38, 1972Ja25, 1975Ko02, 1977Ge12, 1978Av01, 1982Sa36, 1983Sc13, 1983Va22, 1984Ge07, 1992Li05 and 1993El08
Primary Subject
Source
Kellett, M.A.; Nichols, A.L. (eds.); International Atomic Energy Agency, Division of Physical and Chemical Sciences, Vienna (Austria); [1 CD-ROM]; ISBN 978-92-0-143910-9;
; Dec 2013; 15 p; Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/P1618CD/Annex_II.pdf and on 1 CD-ROM attached to the printed STI/PUB/1618 from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Refs.

Record Type
Book
Country of publication
BETA DECAY, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, DECAY, ELECTROMAGNETIC RADIATION, ENERGY LEVELS, EVEN-EVEN NUCLEI, HEAVY NUCLEI, IONIZING RADIATIONS, ISOTOPES, LEAD ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEAR DECAY, NUCLEI, ODD-ODD NUCLEI, RADIATIONS, RADIOISOTOPES, STABLE ISOTOPES, THALLIUM ISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
1 | 2 | 3 | Next |