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Nuclear data sheets for A = 172 by L.R. Greenwood is a Physics and Astronomy article available to read on EtoBox.

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Data are presented for ten nuclei (Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, and It). Only alpha decay data are available for Os and Ir, only the half-life is known for Re, and no level scheme is known for Er. The Er(49.3-h) decay scheme is well established and provides the only data available on the Tm level scheme (16 levels, 9 U-values, and 3 proposed rotational bands). The Tm(63.6-h), Lu(6.7-d) and myb(3.6-~s) decay schemes have been compared, and suggested changes and discrepancies in the Yb level scheme are noted. These data as well as considerable reaction data and 7-multipolarity data establish the Yb level scheme, including 128 levels (45 U-values) and 14 proposed rotational bands. Data on the Lu level scheme are available from Hf(1.87-y) decay and include 10 levels with U-assignments. Two isomers (3.7 m and 440 #s) and their decays are also known for Lu. The Hf level scheme has been studied by Ta(36.8-m) decay and (xnT) reactions and includes 34 levels (17 U-values) with 3 proposed rotational bands. A preliminary decay scheme for W(6.7 m) suggests 4 levels and U-assignments in Ta. (xnT) reactions in W have established the ground-state band up to U= 14 +. Considerable information

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Author

L.R. Greenwood

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0090-3752)

Published

1975

Language

EN

Field

Physics and Astronomy (Physical Sciences)