ADOPTED LEVELS, GAMMAS for 49Ca

Author: T. W. Burrows |  Citation: Nucl. Data Sheets 109, 1879 (2008) |  Cutoff date: 14-Jul-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=5261 keV 3S(n)= 5146.45 keV 18S(p)= 16304.4 keV 8Q(α)= -13954.0 keV 6
Reference: 2012WA38

References:
  A  49K β- decay  B  50K β-n decay
  C  2H(48Ca,49CaG) E=105 MeV  D  48Ca(n,γ) E=THERMAL
  E  48Ca(n,X),(n,γ) E=0.01-2 MeV  F  48Ca(d,p),(pol d,p)
  G  48Ca(d,pγ) E=6 MeV  H  48Ca(t,d) E=37.3 MeV
  I  48Ca(48Ca,xγ) E=210 MeV 

General Comments:

Levels: Analog states: see 48Ca(p,X),(d,n),(3He,d),(α,t) in 49Sc

Levels: Configuration: from analysis of 48Ca(3He,dp) data by 1978He15. See 48Ca(d,n),(3He,d),(α,t) in 49Sc

Levels: %n: inferred by the evaluator from the lack of competing γ deexcitation in β- decay or calculated from gΓnΓγ/Γ, Γn, Γγ, and adopted J

Levels: %γ: calculated from gΓnΓγ/Γ, Γn, Γγ, and adopted J

Levels: Γnγ: from the R-matrix analysis of 1987Ca11 in (n,X),(n,γ)

Gammas: See (d,pγ) for questionably placed γ’s which have not been adopted.

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










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCD FGHI 3/2- 8.718 m 6 
% β- = 100
     
  2023.2 3 ABCD FGHI 1/2- < 5.5 fs   2023.12 26 
  100
(M1,E2)
     0.0
3/2-
  3354.7 6  BC  FGHI (9/2+)     3356.7 10 
  100
[E3]
     0.0
3/2-
  3585.0 8 ABC  FGH  5/2- 40 fs +23-16    3585.0
  100
(M1,E2)
     0.0
3/2-
  3861 2  BC  FG I (1/2-,3/2-)     3859.7 9 
  100

     0.0
3/2-
  3991 2   C  FG   5/2- 9.7 fs +49-35    3991
  100
(M1,E2)
     0.0
3/2-
  4013.6 6   C  FG I 7/2+,9/2+ 0.60 ps +35-18     150.9?
   660.3
  4017.5?
 
 
 



  3861
  3354.7
     0.0
(1/2-,3/2-)
(9/2+)
3/2-
  4072 1 ABC  FG   3/2- 60 fs +21-19    4072.0
  100
(M1,E2)
     0.0
3/2-
  4261     F    1/2-        
  4272 1 A C  FG   1/2- 25 fs +22-17    2249
  4272
   87 16 
  100 16 
(M1,E2)
(M1,E2)
  2023.2
     0.0
1/2-
3/2-
  4416 2   C  FG   5/2+ < 32 fs   4416
  100
(E1)
     0.0
3/2-
  4617 6 ?     F           
  4757.0 10      F  I (5/2+)      743.3
 

  4013.6
7/2+,9/2+
  4788 6 ?     F           
  4885 3      FG   9/2+      875
  1531
  100 20 
   25 5 


  4013.6
  3354.7
7/2+,9/2+
(9/2+)
  5132.8 10         I     1119.1
 

  4013.6
7/2+,9/2+
  5165.5    E            
  5251.3    E            
  5309A   EF    1/2 59 eV 34 
% IT = 0.25 10
% n = 99.75 10
     
  5378     F    9/2+        
  5443.9    E     1/2- 2.5 keV +36-25 
% IT = 0.012 12
% n = 99.988 12
     
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  5539.5    E     3/2- 3.3 keV 18 
% IT = 0.024 8
% n = 99.976 8
     
  5553    EF    GE 5/2 % n ≥ 99.87 5
% IT ≤ 0.13 5
     
  5568A    F    1/2-        
  5587.7A   E     1/2- 4.3 keV 27 
% IT = 0.058 24
% n = 99.942 24
     
  5612A    F           
  5680.2 9         I      547.4
   923.2
  1666.5
 
 
 



  5132.8
  4757.0
  4013.6

(5/2+)
7/2+,9/2+
  5693A    F           
  5722A    F           
  6076    EF    5/2+        
  6257    E     1/2        
  6262     F           
     6.33E+3 2 A         (1/2+,3/2+,5/2+) % n ≈ 100
     
  6376A   EF    (5/2+) % n ≈ 100
     
  6425     F    3/2 10 keV      
  6443     F    3/2 3 keV      
  6492    E     3/2- 8 keV      
  6513A   E     5/2+ % n ≈ 100
     
  6529     F    9/2+        
  6595     F           
  6707A   E     5/2+ % n ≈ 100
     
  6753     F    9/2+        
  6882     F           
  6924A   E     5/2+ % n ≈ 100
     
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  6971     F           
  7070A   E     5/2+ % n ≈ 100
     
  7070    E     GE 7/2        
  7335A    F    (1/2+,3/2+,5/2+) % n ≈ 100
     
  7428A    F    (1/2+,3/2+,5/2+) % n ≈ 100
     
  7529     F    (9/2+)        
  7612A    F    % n ≈ 100
     
  7705     F    (9/2+)        
  7872A    F    % n ≈ 100
     
     8.14E+3 7 ?A         % n ≈ 100
     
     8.39E+3 8 ?A         (1/2+,3/2+,5/2+) % n ≈ 100
     
     8.67E+3 9 ?A         % n ≈ 100
     
     9.10E+3A         % n ≈ 100
     
     9.28E+3 10 A         % n ≈ 100
     
     9.58E+3 11 A         % n ≈ 100
     
    10.10E+3 13 ?A         % n ≈ 100
     

E(level): From (d,p),(pol d,p), except as noted. Note that the correspondence between unbound states observed in (d,p), β- decay, and (n,X),(n,γ) should not Be considered as well established.

Jπ(level): From comparison of σ(θ) and α(θ) to DWBA in (pol d,p), except as noted

T1/2(level): T1/2’s are from DSAM in (d,pγ), except as noted. Γ’s are from gΓnΓγ/Γ, Γn, Γγ, and adopted J, except as noted

E(γ): From (48Ca,Xγ), except as noted

I(γ): Relative photon branching from each level. From β- decay, except as noted

M(γ): d,E2 from comparison to RUL and Δπ from level scheme, except as noted

Back to top

Back to top

Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
  2023.2 1/2- < 5.5 fs   2023.12 26 (M1,E2)0.000314α=0.000314 5, α(K)=1.82×10-5 9, α(L)=1.56E-6 7, α(M)=1.85E-7 9, α(N)=1.05E-8 5, α(N+)=0.00029 4
  3354.7 (9/2+)     3356.7 10 [E3]6.83×10-4B(E3)(W.u.)>5.9, α=6.83E-4 10, α(K)=1.131E-5 16, α(L)=9.69E-7 14, α(M)=1.151E-7 17, α(N+)=0.000671 10
  3585.0 5/2- 40 fs +23-16    3585.0(M1,E2)0.000977α=0.000977 14, α(K)=7.25×10-6 17, α(L)=6.20E-7 14, α(M)=7.36E-8 17, α(N)=4.20E-9 10, α(N+)=0.00096 7
  3991 5/2- 9.7 fs +49-35    3991(M1,E2)0.001117α=0.001117 14, α(K)=6.19×10-6 13, α(L)=5.29E-7 12, α(M)=6.29E-8 14, α(N)=3.58E-9 8, α(N+)=0.00110 7
  4072 3/2- 60 fs +21-19    4072.0(M1,E2)0.001137α=0.001137 16, α(K)=6.02×10-6 13, α(L)=5.14E-7 11, α(M)=6.11E-8 13, α(N)=3.48E-9 8, α(N+)=0.00113 7
  4272 1/2- 25 fs +22-17    2249(M1,E2)0.000415α=0.000415 6, α(K)=1.52×10-5 6, α(L)=1.30E-6 5, α(M)=1.54E-7 6, α(N)=8.8E-9 4, α(N+)=0.00039 5
1/2- 25 fs +22-17    4272(M1,E2)0.001208α=0.001208 17, α(K)=5.62×10-6 12, α(L)=4.80E-7 10, α(M)=5.70E-8 12, α(N)=3.25E-9 7, α(N+)=0.00120 8
  4416 5/2+ < 32 fs   4416(E1)0.00184B(E1)(W.u.)>0.00018, α=0.00184 3, α(K)=4.07E-6 6, α(L)=3.48E-7 5, α(M)=4.13E-8 6, α(N)=2.35E-9 4, α(N+)=0.00184 3

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.03/2- 8.718 m 6 
% β- = 100
μ=-1.38 6 (1993VeZY)
T1/2(level): Weighted av (internal) of 8.718 min 7 (1989Ab05; NaI), 8.715 min 23 (1970Ha22; NaI,chem,>20 T1/2’s), and 8.719 min 13 (1970Re13; 7 T1/2’s); all groups used (n,γ) to produce 49Ca. Others: see 1995Bu23.
  3354.7(9/2+)   E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β-n decay and 2023.16 30 from (n,γ) E=thermal.
  3585.05/2- 40 fs +23-16  CONF=((48CA 2+) (1978He15)
E(level): From β- decay.
  3861(1/2-,3/2-)   E(level): From (d,pγ). From β-n decay.
  39915/2- 9.7 fs +49-35  CONF=((48CA 2+) (1978He15)
E(level): From (d,pγ). From β-n decay.
  4013.67/2+,9/2+ 0.60 ps +35-18  CONF=((48CA 3-)(N (1978He15)
E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β-n decay and 2023.16 30 from (n,γ) E=thermal.
  40723/2- 60 fs +21-19  E(level): Unweighted average of 4065 2 from (d,pγ) and 4072 1 from β- decay.
  42721/2- 25 fs +22-17  E(level): From (d,pγ). From β-n decay.
  44165/2+ < 32 fs E(level): From (d,pγ). From β-n decay.
  4757.0(5/2+)   E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β-n decay and 2023.16 30 from (n,γ) E=thermal.
  48859/2+   E(level): From (d,pγ). From β-n decay.
  5132.8   E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β-n decay and 2023.16 30 from (n,γ) E=thermal.
  5165.5   E(level): From E(n)(lab) in (n,X),(n,γ).
  5251.3   E(level): From E(n)(lab) in (n,X),(n,γ).
  53091/2 59 eV 34 
% IT = 0.25 10
% n = 99.75 10
Γγ=0.15 6, Γn=59 5
E(level): From β- decay. Eγ discrepant with energy level difference by more than three σ.
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  5443.91/2- 2.5 keV +36-25 
% IT = 0.012 12
% n = 99.988 12
Γγ=0.3 3, Γn=2.5 3
E(level): From E(n)(lab) in (n,X),(n,γ).
Jπ(level): From the evaluation of 2006MuZX.
  5539.53/2- 3.3 keV 18 
% IT = 0.024 8
% n = 99.976 8
Γγ=0.8 3, Γn=3.3 2
E(level): From E(n)(lab) in (n,X),(n,γ).
Jπ(level): From the evaluation of 2006MuZX.
  5553GE 5/2 % n ≥ 99.87 5
% IT ≤ 0.13 5
Γγ=0.5 1, Γn=0.38 8
E(level): From β- decay. Eγ discrepant with energy level difference by more than three σ.
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  55681/2-   Jπ(level): From the evaluation of 2006MuZX. (1/2+,3/2+,5/2+) for the multiplet from log ft<5.9 from (3/2+).
  5587.71/2- 4.3 keV 27 
% IT = 0.058 24
% n = 99.942 24
Γγ=2.5 10, Γn=4.3 4
E(level): From E(n)(lab) in (n,X),(n,γ).
Jπ(level): From the evaluation of 2006MuZX. (1/2+,3/2+,5/2+) for the multiplet from log ft<5.9 from (3/2+).
  5693   Jπ(level): (1/2+,3/2+,5/2+) for the multiplet from log ft<5.9 from (3/2+).
  5722   Jπ(level): (1/2+,3/2+,5/2+) for the multiplet from log ft<5.9 from (3/2+).
  60765/2+   E(level): Eγ discrepant with energy level difference by more than three σ.
Jπ(level): From the evaluation of 2006MuZX.
  62571/2   Γn=6 3
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
     6.33E+3(1/2+,3/2+,5/2+) % n ≈ 100
E(level): From β- decay.
Jπ(level): log ft<5.9 from (3/2+) in β- decay.
E(level)Jπ(level)T1/2(level)Comments
  6376(5/2+) % n ≈ 100
Γn=1.2 4
E(level): Eγ discrepant with energy level difference by more than three σ.
  64253/2 10 keV E(level): From the evaluation of 2006MuZX.
Jπ(level): From the evaluation of 2006MuZX.
T1/2(level): From the evaluation of 2006MuZX.
  64433/2 3 keV Jπ(level): From the evaluation of 2006MuZX.
T1/2(level): From the evaluation of 2006MuZX.
  64923/2- 8 keV Γn=5 1
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
T1/2(level): From the evaluation of 2006MuZX.
  65135/2+ % n ≈ 100
Γn=4 2
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  67075/2+ % n ≈ 100
Γn=160 20
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  69245/2+ % n ≈ 100
Γn=240 20
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  70705/2+ % n ≈ 100
Γn=18 2
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  7070GE 7/2   Γn=2.9 6
E(level): From β- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ).
Jπ(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
  7335(1/2+,3/2+,5/2+) % n ≈ 100
Jπ(level): log ft<5.9 from (3/2+) in β- decay.
  7428(1/2+,3/2+,5/2+) % n ≈ 100
Jπ(level): log ft<5.9 from (3/2+) in β- decay.
     8.14E+3 % n ≈ 100
E(level): From β- decay.
     8.39E+3(1/2+,3/2+,5/2+) % n ≈ 100
E(level): From β- decay.
Jπ(level): log ft<5.9 from (3/2+) in β- decay.
     8.67E+3 % n ≈ 100
E(level): From β- decay.
     9.10E+3 % n ≈ 100
E(level): From β- decay.
     9.28E+3 % n ≈ 100
E(level): From β- decay.
     9.58E+3 % n ≈ 100
E(level): From β- decay.
    10.10E+3 % n ≈ 100
E(level): From β- decay.

Back to top