This is an updated edition of the 2000 booklet of the same name†. The 2000 edition is being archived for the US, DOE nuclear material inventory control.

This booklet presents selected properties of all known nuclides and their known isomeric states. Properties of ionized atoms are not included.

The data given here are taken mostly from the adopted properties of the various nuclides as given in the Evaluated Nuclear Structure Data (ENSDF)[1]. The data in ENSDF are based on experimental results and are published in Nuclear Data Sheets [2] for A>20 and in Nuclear Physics [3] for A≤20. For nuclides for which either there are no data in ENSDF or those data that have since been superseded, the half-life and the decay modes are taken either from recent literature[4] or from other sources, e.g., [5].

For other references, experimental data, and information on the data measurements, please refer to the original evaluations [1-3]. The data were updated to January 15, 2005.

Explanation of Table

Column 1, Nuclide (Z, El, A):

Nuclides are listed in order of increasing atomic number (Z), and are subordered by increasing mass number (A). All isotopic species, as well as all isomers with half-life ≥ 0.1 s, and some with half-life ≥ 1 ms which decay by SF, α or p emissions, are included. A nuclide is given even if only its mass estimate or its production cross section is available. For the latter nuclides half-life limit or an approximate value is given as estimated from systematics [5].

Isomeric states are denoted by the symbol "m" after the mass number and are given in the order of increasing excitation energy.

The ²³⁵U thermal fission products, with fractional cumulative yields ≥ 10^-6, are italicized in the table. The information on fission products is taken from the ENDF/B-VI fission products file [8].

The names and symbols for elements are those adopted by the International Union of Pure and Applied Chemistry (2004). No names and symbols have as yet been adopted for Z > 111.

Column 2, J^π:

Spin and parity assignments, without and with parentheses, are based upon strong and weak arguments, respectively. See the introductory pages of any issue of Nuclear Data Sheets [2] for description of strong and weak arguments for Jπ assignments.

Column 3, Mass Excess, Δ:

Mass excesses, M-A, are given in MeV (from [6]) with Δ(⁺¹²C)=0, by definition. For isomers the values are obtained by adding the excitation energy to the Δ(g.s.) values. Wherever the excitation energy is not known, the mass excess for the next lower isomer (or the g.s.) is given. The values are given to the accuracy determined by uncertainty in Δ(g.s.) (maximum of three figures after the decimal). The uncertainty is ≤9 in the last significant figure. An appended "s" denotes that the value is obtained from systematics [6].

Column 4, T_½, Γ, or Abundance:

The half-life and the abundance (in bold face from [7]) are shown followed by their units ("%"" symbol in the case of abundance) which are followed by the uncertainty, in italics,in the last significant figures. For example, 8.1 s 10 means 8.1±1.0 s. For some very short-lived nuclei, level widths rather than half-lives are given. There also, the width is followed by units (e.g., eV, keV, or MeV) which are followed by the uncertainty in italics, if known. As stated above when a limit or an approximate value is given it is based on systematics (sy), mostly from [5]. A '?' in this field indicates that T_1/2 is not known.

For 2β^- and 2ε decay only the lowest value of their several limits (e.g., for 0ν or 2ν, etc.) is given.

If a new measurement of half-life, has since become available it is presented in place of the evaluated value in ENSDF.

Column 5, Decay Mode:

Decay modes are given in decreasing strength from left to right, followed by the percentage branching, if known ("w" indicates a weak branch). The percentage branching is omitted where there is no competing mode of decay or no other mode has been observed. A "?" indicates an expected but not observed mode of decay[5]. The various modes of decay are given below:

The various modes of decay are given below:

β-	β- decay
ε	ε (electron capture), or ε+β+, or β+ decay
IT	isomeric transition (through γ or conversion-electron decay)
n, p, α, ...	neutron, proton, alpha, ... decay
SF	spontaneous fission
2β-, 3α, ...	double β- decay (β-β--), decay through emission of 3 α's, ...
β-n, β-p, β-α, ...	delayed n, p, α, ... (emission following β- decay)
εp, εα, εSF, ...	delayed p, α, SF, ... (emission following ε or β+ decay)

NNDC Web Services

The centerfold presents the NNDC home page on the web (www.nndc.bnl.gov). The greatly expanded NNDC web service offers a wealth of Nuclear Physics information which includes analysis programs, reference data, and custom-tailored retrievals Nfrom its many databases.

DOE Standard for Nuclear Material Inventory

The 2000 edition was adopted as the standard by the the Department of Energy for the purposes of their nuclear material inventory. The 2000 edition, as well as, the current version are available through the NNDC web site, www.nndc.bnl.gov/wallet/.

Homeland Security

Nuclear Wallet Cards for Radioactive Nuclides, a reference for homeland security personnel based on this booklet was published in March 2004. The booklet, although limited to radioactive nuclides, contains additional radiation information. It is available on the web as well as in printed form from NNDC.

Acknowledgements

The appendix on Λ hypernuclides has been prepared by R. Chrien, BNL. The author is thankful to T. Burrows, M. Herman, B. Pritychenko, D. Rochman, A. Sonzogni, and D. Winchell for many useful suggestions. The help in library matters from J. Totans, proof-reading from M. Blennau, and in all computer matters from R. Arcilla is acknowledged. The author is grateful for encoragement and support from P. Oblozinsky and C. Dunford.

The research was supported by the Office of Nuclear Physics, Office of Science, U.S. Department of Energy.

References

1. Evaluated Nuclear Structure Data File- a computer file of evaluated experimental nuclear structure data maintained by the National Nuclear Data Center, Brookhaven National Laboratory (file as of January, 2005).
2. Nuclear Data Sheets - Elsevier B.V., Amsterdam. Evaluations published by mass number for A = 21 to 294. See page ii of any issue for the index to A-chains. See also Energy Levels of A = 21-44 Nuclei (VII), P. M. Endt, Nuclear Physics A521, 1 (1990). Supplement, Nuclear Physics A633, 1 (1998).
3. Nuclear Physics - North Holland Publishing Co., Amsterdam - Evaluations for A = 3 to 20.
4. Nuclear Science Reference File- a bibliographic computer file of nuclear science references continually updated and maintained by the National Nuclear Data Center, Brookhaven National Laboratory. Recent literature is scanned by D. Winchell.
5. NUBASE Evaluation of Nuclear and Decay Properties, G. Audi, O. Bersillon, J. Blachot, and A.H. Wapstra, Nuclear Physics A729, 3 (2003).
6. The AME2003 Atomic Mass Evaluation, A. H. Wapstra, G. Audi, and C. Thibault, Nuclear Physics A729, 129 (2003).
7. Table of Isotopes, N. Holden, The CRC Handook of Physics and Chemistry (2004).
8. Evaluation and Compilation of Fission Product Yields 1993, T.R. England and B.F. Rider; Rept. LA-UR-94-3106 (1994). ENDF/B-VI evaluation; MAT #9228, Revision 1.
9. Table of Isotopes (1978), 7^th edition, Editors: C.M. Lederer, V.S. Shirley, Authors: E. Browne, J.M. Dairiki, R.E. Doebler, A.A. Shihab-Eldin, J. Jardine, J.K. Tuli, and A.B. Buyrn, John Wiley, New York.

†

The first Nuclear Wallet Cards was produced by F. Ajzenberg-Selove and C. L. Busch in 1971. The Isotopes Project, Lawrence Berkeley National Laboratory, produced the next edition in 1979 based upon the Table of Isotopes, 7^th edition (1978) [9]. The subsequent editions, the third in 1985, the fourth in 1990, the fifth in 1995, and the sixth in 2000 were produced by J.K. Tuli, NNDC. In 2004, Nuclear Wallet Cards for Radioactive Nuclides aimed at Homeland Security personnel was produced by J.K. Tuli, NNDC.

Nuclear Wallet Cards 2005

The seventh edition of nuclear wallet cards was produced in pda or pdf formats and released in April of 2005.

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