Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 31-OCT-2011 

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 10-MAY-2009 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=1.08×104 keV SYS(n)= 3.6×103 keV SYS(p)= 2.19×104 keV SYQ(α)= -1.54×104 keV SY
Reference: 2012WA38

General Comments:

1997Be70: 56Ca identified in 9Be(238U,F), E=750 MeV/nucleon, fragments separator (FRS) at GSI facility, identification by time-of-flight. Measured production cross section

2008Ma01: 56Ca isotope produced in 9Be(76Ge,X) reaction at E=140 MeV/nucleon 76Ge beam provided by NSCL at Michigan State University. Isotopes separated with A1900 fragment separator. Time-of-flight technique. Measured β particles using Beta Counting System of three Si PIN detectors, a double-sided silicon strip detector and six single sided silicon strip detectors. Detected γ rays using 16 Ge detectors of the Segmented Germanium array. Measured half-life of 56Ca by fitting the decay curves to a function which included decay of the parent, growth and decay of daughter and a constant background. No gamma rays were seen in correlation with β rays.

Structure calculations (selected references): 2009Co19 (level energies, spin, parities, etc.), 2006Te07 (S(2n), radii, halo features), 2005Be13 (single-particle energies, configurations), 1998Br30 and 1995Ri05 (binding energies, levels), 1997Pa38 (binding energies, deformation, radii), 1992Ma60 (rms radii, binding energies), 1976Da02 (mass excess). Consult NSR database for about 20 other theory references including those with predictions of cross sections in different reactions.

No level-scheme information is available from β- decay of 56K

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

Q-value: ΔQ(β-)=1142, ΔS(n)=1208, ΔS(p)=1503, ΔQ(α)=1345 (syst,2011AuZZ)

Q-value: Q(β-n)=9111 1165, S(2n)=5505 1142 (syst,2011AuZZ). S(2p)=40250 (1997Mo25,calculated)

Q-value: Values in 2003Au03 (all from syst): Q(β-)=11830 1140, S(n)=3400 1140, S(p)=20460 1350, Q(α)=-12870 1280, Q(β-n)=8070 1170, S(2n)=5690 1140

Jπ(level) T1/2(level)
  0 0+ 11 ms 2 
% β- = 100
% β-n = ?

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Additional Level Data and Comments:

  00+ 11 ms 2 
% β- = 100
% β-n = ?
Theoretical %β-n=4 (1997Mo25), 2 (2008Ma01); %β-2n=0.2 (1997Mo25).

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