Nuclear Data Sheets for A = 168

Journal Article · Fri Mar 01 04:00:00 EDT 1974 · Nucl. Data Sheets, v. 11, no. 3, pp. 385-447

DOI:https://doi.org/10.1016/S0090-3752(74)80020-7· OSTI ID:4342968

Greenwood, L R

The 1964 version of the Nuclear Data Sheets was revised according to experimental data received prior to May 1973, including approximately 120 papers. Data are presented for 6 nuclei (Ho, Er, Tm, Yb, Lu, and Hd, and Ta has been identified as a activity. The level structure of Er has been extensively studied via Ho decay. Tm decay, Er (n, gamma ) and various reactions. Comparison of these data has led to the addition of several new levels and suggested transitions in the three decay schemes. About 99 levels are now known in Er, with J/sup pi / assignments for about half of these. The Tm level scheme has been greatly expanded via stripping and pickup reactions and now includes approximately 136 levels below 1.9 MeV, with about 50 J/sup pi / assignments. The Yb level scheme now includes approximately 62 levels, primarily due to Lu decay and pickup reactions. The Lu activity has been identifled as two separate isomers (5.3 m and 6.7 m), and tentative decay schemes are presented. For Hf, only the ground-state rotational band has been identified, and no decay scheme has been proposed. Rotational-band structure is presented for Er, Tm, Yb, and W, and has been fit by the empirical formula for comparison to theoretical calculations and to aid in the identification of missing band members. There is presently no information on the level structure of Ho, Lu, or Ta. Lu could be most easily studied via Hf decay (25.95 m) or the /sup 168/Yb(/sup 3/He,t) reaction. (auth)

• Research Organization: BNL (Brookhaven National Laboratory (BNL), Upton, NY (United States))
• Sponsoring Organization: USDOE SC Office of Nuclear Physics (SC-26)
• NSA Number: NSA-29-022989
• OSTI ID: 4342968
• Journal Information: Nucl. Data Sheets, v. 11, no. 3, pp. 385-447, Journal Name: Nucl. Data Sheets, v. 11, no. 3, pp. 385-447 Journal Issue: 3 Vol. 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

= 189--Energy Levels &
= 189--Radioactive Decay
= A <
DATA HOLMIUM 168-- LUTETIUM 168-- TANTALUM 168
ENERGY LEVELS-- ERBIUM 168-- HAFNIUM 168-- THULIUM 168-- YTTERBIUM 168
N68821 --Physics (Nuclear
Experimental)--Nuclear Properties &
N68831* --Physics (Nuclear
Experimental)--Nuclear Properties &
Reactions
150 <
TANTALUM 168
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