Nuclear Data Sheets for A = 168

doi:10.1016/j.nds.2010.07.001

Nuclear Data Sheets

Volume 111, Issue 7, July 2010, Pages 1807-2080

https://doi.org/10.1016/j.nds.2010.07.001 Get rights and content

Abstract

Nuclear structure data pertaining to all nuclei with mass A=168 (Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt) have been evaluated and incorporated into the ENSDF data file. This evaluation supersedes the previous publication (V.S. Shirley, Nuclear Data Sheets 71, 261 (1994) (literature cutoff date July 1993)) and subsequent ENSDF file revisions for Tb and Dy (C. Baglin, literature cutoff date of 15 June 1999) and Hf (B. Singh, literature cutoff date of 30 April 2001), and includes literature available by 15 June 2010. Since the above evaluations, the first excited states in ¹⁶⁸Pt have been identified (1998Ki20, 2009Go16) and α decay from ¹⁷²Hg has been observed (2009Sa27, 2004Ke06, 1999Se14). New levels in ¹⁶⁸Dy have been excited using the ¹⁷⁰Er(⁸²Se,⁸⁴Krγ) reaction (2010So03). (HI,xnγ) studies have significantly expanded our knowledge of level structure in ¹⁶⁸Lu (1999Ka17, 2002Ha33), ¹⁶⁸Ta (2008QiZZ), ¹⁶⁸Yb (1995Fi01), ¹⁶⁸Tm (2007CaZW), ¹⁶⁸Hf (2009Ya21), ¹⁶⁸Os (2001Jo11, 2009Od02) and, for ¹⁶⁸Tm, important information has come also from (d,2nγ) and (α,nγ) reactions (1995Si20). Revised decay schemes are available following new studies of ¹⁶⁸Hf ε decay (6.7 min) (1997Ba26), ¹⁶⁸Lu ε decay (1999Ba65), ¹⁶⁸Ta ε decay (2007Mc08) and ¹⁷²Au α decay (2009Ha42). Significant new information for ¹⁶⁸Er is available from (p,t) (2006Bu09), (d,p) and (t,d) (1996Ma50), (γ,γ′) (1996Ma18), (136Xe, Xγ) (2010Dr02), (²³⁸U,²³⁸ $U^{'} γ$ ) (2003Wu07) and (n, $n^{'}$ γ) (1998Be20, 1998Be62) reactions, and the availability of γγ coin data (1994Ju02, 1996Gi09) for the (n,γ) E=thermal reaction has resulted in some significant level scheme revisions.

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^☆: This work was supported by the Director, Office of Science, Office of Nuclear Physics of the U.S. Department of Energy under contract DE-AC02-03CH11231.

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Nuclear Data Sheets for A = 168☆

Abstract

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Doklady Akad. Nauk SSSR

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Nucl. Phys.

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Nucl. Phys.

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