Nuclear Data Sheets for A = 199
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)
Nuclear spectroscopic information for known nuclides of mass number 199 (Os,Ir,Pt,Au,Hg,Tl,Pb,Bi,Po,At,Rn,Fr) with Z = 76 to 87 and N = 123 to 112 have been evaluated and presented together with adopted energies and J{pi} of levels in these nuclei. No excited state data are available for {sup 199}Os and {sup 199}Fr, and very little information is available for levels in {sup 199}Ir, {sup 199}Rn and {sup 199}At. The decay of {sup 199}Ir to {sup 199}Pt has not been studied. The decay of the 90-min activity of {sup 199}Pb to {sup 199}Tl is known in detail but remains unpublished in the open literature, while the decay of the 12.2-min isomer remains mostly unknown. The decays of the two activities of {sup 199}Tl to {sup 199}Pb are not known as separate decay scheme for each of the activities, thus only a composite decay scheme is presented. Similar is the case for the decay of the two activities of {sup 199}Po to {sup 199}Bi. In ({sup 3}He,d) and ({alpha},t) studies for {sup 199}Au, disagreements are found between two independent contemporary studies. The most detailed structure known is for {sup 199}Pb with five magnetic-rotational (MR) dipole bands together with many other dipole bands which are of probable multi-quasiparticle nature. This work supersedes previous evaluations of A = 199 published in update mode by 1994Ar13; as full A-chain updates by 1988Sc02, 1978Ha12 and 1971Le37; and a mid-stream update of {sup 199}Pb nuclide by 2001Si44.
- OSTI ID:
- 20976817
- Journal Information:
- Nuclear Data Sheets, Vol. 108, Issue 1; Other Information: DOI: 10.1016/j.nds.2007.01.001; PII: S0090-3752(07)00003-8; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0090-3752
- Country of Publication:
- United States
- Language:
- English
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