ADOPTED LEVELS for 163Eu

Authors: C. W. Reich, Balraj Singh |  Citation: Nucl. Data Sheets 111, 1211 (2010) |  Cutoff date: 12-Apr-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=4.68×103 keV 7S(n)= 6.02×103 keV 10S(p)= 9.40×103 keV SYQ(α)= -2.51×103 keV 8
Reference: 2012WA38

General Comments:

Eu isotope produced from p-induced fission of 238U, followed by on-line isotope separation. Assignment to Eu based on observation of Gd K x-rays in the mass-163 fraction.

2007Ha57 (also 2006SaZS): source prepared by 238U(p,F) at E(p)=32 MeV at JAEA facility. Fission products were ionized and separated online using Tokai-ISOL mass separator. Measured Q(β-) using total absorption gamma-ray spectrometer of BGO detector. Deduced mass excess=-56740 100 (2007Ha57), value includes systematic predictions of 2003Au03. Other: mass excess=-56630 500 (syst,2009AuZZ,2003Au03)

Q-value: Note: Current evaluation has used the following Q record

Q-value: S(n),S(p),Q(α): from 2009AuZZ, 2003Au03. The uncertainties, also from systematics, for these quantities are: for S(n), 590; for S(p), 710; and, for Q(α), 540 (2009AuZZ,2003Au03).




E(level)
(keV)
T1/2(level)
  0.0 7.7 s 4 
% β- = 100

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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