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Nuclear data sheets, 2011-05, Vol.112 (5), p.1163-1389
Ort / Verlag
United States: Elsevier Inc
Erscheinungsjahr
2011
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Nuclear structure data pertaining to all nuclei with mass number A=93 (Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag) have been compiled and evaluated and incorporated into the ENSDF data file. This publication for A=93 supersedes the previous publication by C.M. Baglin,
Nuclear Data Sheets
80, 1 (1997) (literature cutoff date November 1996) and subsequent revisions by C.M. Baglin of the ENSDF files for 93Br and
93Kr (literature cutoff 26 February 2001) and for
93Rh (literature cutoff 27 February 2001); it includes all data available prior to 15 December 2010. Significant changes since prior evaluations include the following: 2010Hw03 identified several high-spin states in
93Kr in
252Cf SF decay; in addition to the many low-spin levels already known in
93Rb from
β
−
decay, several higher-spin states have now been identified in a
252Cf SF decay study (2009Hw03); this SF decay has also been used to identify additional states in
93Sr (2003Hw01) and the
238U(
82Se,X
γ) reaction (2007Bu35) has provided new information on
93Y. (HI,xn
γ) reaction studies have expanded our knowledge of the structure of
93Zr (2002Fo03, 2005Pa48),
93Nb (2007Wa45),
93Mo (2005Fu01),
93Tc (2003Ha22) and
93Pd (2004So04,2004Ru02). Considerable information on
93Nb was provided by a (p,2n
γ) study (2010Or01, 2006Or09, 2007Or01). The level schemes of
93Ru,
93Rh and
93Pd have undergone the most extensive revision thanks to studies of
93Rh
ε decay (2004De40),
94Ag
εp decay (2004Mu30) and
94Ag p decay (2005Mu15, 2005Mu30), respectively. The half-life of the Zr member of this chain is of particular interest because of
93Zrʼs large contribution to long-term activity of nuclear reactor waste and also due to its potential as a supernova chronometer. During 2010, two new well-documented measurements of T
1/2(
93Zr) were published (2010Ya01 and 2010Ca01); one agrees well with an earlier, undocumented measurement but, unfortunately, the other is many standard deviations lower for reasons which are not immediately apparent.