ADOPTED LEVELS, GAMMAS for 62Co

Authors: Alan L. Nichols, Balraj Singh, Jagdish K. Tuli |  Citation: Nucl. Data Sheets 113, 973 (2012) |  Cutoff date: 15-Apr-2012 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=5322 keV 19S(n)= 6598 keV 19S(p)= 9792 keV 19Q(α)= -8021 keV 19
Reference: 2012WA38

References:
  A  62Fe β- decay (68 S)  B  48Ca(18O,p3nγ)
  C  62Ni(t,3He)  D  64Ni(d,α),(pol d,α)

General Comments:

62Co produced and identified by 1949Pa01 in 64Ni(d,α) and 62Ni(n,p) reactions followed by chemical separation. Later studies: 1957Ga15, 1968Ki08, 1969Wa16, 1969Mo04, 1969Es03, 1970Jo12

Other reactions:

1995Wi09: 62Ni(n,p) E=198 MeV; measured summed Gamow-Teller strength functions up to 30 MeV excitation energy

1987Ah01: 63,65Cu(n,X) E=9,11 MeV; measured cross sections and level-density parameter

1987Gl05: 64Ni(7Li,7Be) E=78 MeV; measured σ, deduced particle-hole gross structure

1984Br03: 62Ni(n,p) E=60 MeV; measured σ(θ), deduced analog isovector resonance excitation mechanism

1984Ul01: 62Ni(n,p) E=59.6 MeV; measured σ(θ), deduced GDR analog, sum rule and blocking

1979Gr16: 66Zn(α,8B) E=109 MeV; measured σ(θ); possible observation of 62Co g.s. population.

1999Ca29: shell model calculations, levels

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

Q-value: S(2n)=15924 20, S(2p)=23041 20 (2011AuZZ)

Q-value: Values in 2003Au03: Q(β-)=5315 20, S(n)=6604 20, S(p)=9799 28, Q(α)=-7950 40, S(2n)=15925 20, S(2p)=22830 90










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0A CD (2)+ 1.54 m 10 
% β- = 100
     
    22 5  BCD (5)+ 13.86 m 9 
% β- > 99
% IT < 1
     
   230 5   CD        
   244 5   CD        
   506.1 1 A CD 1+      506.1 1 
  100

     0.0
(2)+
   532 8   CD 1+        
   609.71 14  BCD (5)+      587.71 14 
  100
D
    22
(5)+
   696 10   CD        
   706 10   CD 3+,4+,5+        
   863 10    D        
   901 10   CD        
   920 10   CD        
  1172 10   CD        
  1216.30 15  BCD (6)      606.44 15 
  1194.45 18 
   33 5 
  100 5 
D
D
   609.71
    22
(5)+
(5)+
  1248 10    D        
  1271 5   C         
  1359 5   CD 1+,2+,3+        
  1469 8   CD        
  1500 10    D        
  1543.22 19  BCD (7) 1.32 ps 28     326.92 12 
  100
D
  1216.30
(6)
  1667 10   CD        
  1692 10   CD        
  1805 10   CD (1+,2+,3+)        
  1820 10   C         
  1873 15   C         
  1979 10   CD        
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2079 10    D        
  2120 15   C         
  2135 15   CD        
  2165 20   CD        
  2281 10    D        
  2309.7 9  B   (8) < 0.28 ps    766.5 9 
  100
D
  1543.22
(7)
  2344 10    D (7+)        
  2420 10    D        
  2521 10    D (1+,2+,3+)        
  2647 10    D        
  2754 10    D        
     2.88E3 2    D (7+)        
     2.92E3   D        
     3.46E3   D        
     3.79E3   D        
     4.10E3   D        
     4.18E3 3    D (7+)        
     4.38E3 3    D (7+)        
     4.45E3 3    D (7+)        
     4.60E3 3    D (7+)        

E(level): From γ-ray studies when possible. Energies of levels populated only in particle-transfer reactions taken from 62Ni(t,3He) and 64Ni(d,α) for levels below 2.8 MeV, and from 64Ni(pol d,α) for higher energies

M(γ): From γ(θ) in 48Ca(18O,p3nγ)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    22(5)+ 13.86 m 9 
% β- > 99
% IT < 1
Searches for a 22-keV isomeric transition as photons or Co x rays following possible heavily-converted IT decay have proved negative (1969Es03,1970Jo12). Implies almost 100% β- decay of the isomer.
   230   E(level): From (t,3He).
   244   E(level): From (t,3He).
   5321+   E(level): Weighted average from (t,3He) and (d,α).
   609.71(5)+   E(level): Based on fixed value of 22-keV level, without including the specified uncertainty of 5 keV.
   7063+,4+,5+   E(level): From (d,α).
   901   E(level): From (d,α).
   920   E(level): From (d,α).
  1172   XREF: C(?).
E(level): From (d,α).
  1216.30(6)   E(level): Based on fixed value of 22-keV level, without including the specified uncertainty of 5 keV.
  13591+,2+,3+   E(level): Weighted average from (t,3He) and (d,α).
  1469   E(level): Weighted average from (t,3He) and (d,α).
  1543.22(7) 1.32 ps 28  E(level): Based on fixed value of 22-keV level, without including the specified uncertainty of 5 keV.
  1667   E(level): Weighted average from (t,3He) and (d,α).
  1692   E(level): Weighted average from (t,3He) and (d,α).
  1805(1+,2+,3+)   E(level): Weighted average from (t,3He) and (d,α).
  1979   E(level): Weighted average from (t,3He) and (d,α).
  2135   E(level): From (t,3He).
  2309.7(8) < 0.28 ps E(level): Based on fixed value of 22-keV level, without including the specified uncertainty of 5 keV.
  2344(7+)   Jπ(level): From comparison of experimental σ(θ) and Ay(θ) distributions in (pol d,α) with empirical patterns for L=6 and J=7 (1988Na01).
     2.88E3(7+)   Jπ(level): From comparison of experimental σ(θ) and Ay(θ) distributions in (pol d,α) with empirical patterns for L=6 and J=7 (1988Na01).
     4.18E3(7+)   Jπ(level): From comparison of experimental σ(θ) and Ay(θ) distributions in (pol d,α) with empirical patterns for L=6 and J=7 (1988Na01).
     4.38E3(7+)   Jπ(level): From comparison of experimental σ(θ) and Ay(θ) distributions in (pol d,α) with empirical patterns for L=6 and J=7 (1988Na01).
     4.45E3(7+)   Jπ(level): From comparison of experimental σ(θ) and Ay(θ) distributions in (pol d,α) with empirical patterns for L=6 and J=7 (1988Na01).
     4.60E3(7+)   Jπ(level): From comparison of experimental σ(θ) and Ay(θ) distributions in (pol d,α) with empirical patterns for L=6 and J=7 (1988Na01).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   506.1   506.1E(γ): from 62Fe β- decay.

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