ADOPTED LEVELS, GAMMAS for 57Cr

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 12-APR-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=4962.0 keV 24S(n)= 5314 keV 3S(p)= 1.369×104 keV 18Q(α)= -8.12×103 keV 10
Reference: 2012WA38

References:
  A  57V β- decay (350 MS)  B  14C(48Ca,αnγ)

General Comments:

1978Da04: first identification and production of 57Cr in 48Ca(11B,np) at E=21 MeV. Measured half-life

1990Tu01: 57Cr activity produced by 800 MeV proton induced fission and fragmentation using natural Th target and subsequent particle analysis with a tof isochronous spectrometer.

1990Da15: yield measurement in Ti(α,xnyp) at E=30-60 MeV.

1994Se12: mass measurement

2005Gu37: mass measurement using Penning-trap method

2007Na31: production yield in 136Xe(p,X) E=1 GeV/nucleon, GSI.

2008Ka41: shell-model calculations, B(E2).

Other reaction:

1982Se09: 59Co(π-,2p) E=stopped pions. Negative pions at momentum of 110 MeV/c were moderated and stopped in 59Co target at Swiss Institute for Nuclear Research. Measured pp-coin and σ(θ) for coincident protons using six ΔE-E silicon telescopes. Deduced yields for pp-, pd- and pt-channels and missing mass spectra.

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

Q-value: S(2n)=13559.3 20, S(2p)=25430 150 (2009AuZZ,2003Au03)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
      0.0AB (3/2)- 21.1 s 10 
% β- = 100
     
    267.87 8 AB (5/2-)      267.92 9 
  100
D
      0.0
(3/2)-
    692.69 9 AB (5/2-)      424.90 14 
   692.61 12 
   24.7 17 
  100 5 

D+Q
    267.87
      0.0
(5/2-)
(3/2)-
    941.79 10 AB (7/2-)      249.08 8 
   673.8 2 
   941.75 18 
   60.9 22 
   28.3 18 
  100 5 
D

(Q)
    692.69
    267.87
      0.0
(5/2-)
(5/2-)
(3/2)-
   1506.91 14  B (9/2+)      565.11 10 
  100
D+Q
    941.79
(7/2-)
   1581.13 19 AB (9/2-)      639.1 2 
  1313.8 4 
  100 6 
   28 8 
D+Q
(Q)
    941.79
    267.87
(7/2-)
(5/2-)
   1585.2 6 A       892.5 6 
  100

    692.69
(5/2-)
   1858.1 4  B (9/2-)     1166.5 6 
  1593.8 17 
   61 12 
  100 23 


    692.69
    267.87
(5/2-)
(5/2-)
   2098.14 22  B (11/2-)      240.8 4 
   516.88 19 
  1156.0 4 
    9.4 12 
   68 4 
  100 24 


(Q)
   1858.1
   1581.13
    941.79
(9/2-)
(9/2-)
(7/2-)
   2344.50 19  B (13/2+)      837.59 12 
  100
(Q)
   1506.91
(9/2+)
   2611.6 3  B (13/2-)      513.4 2 
  1030.8 5 
   76 8 
  100 50 


   2098.14
   1581.13
(11/2-)
(9/2-)
   3377.6 6  B     1279.4 5 
  100

   2098.14
(11/2-)
   3500.4 3  B (17/2+)     1155.9 2 
  100
(Q)
   2344.50
(13/2+)
   3555.4 5  B (15/2-)      943.8 4 
  100
D+Q
   2611.6
(13/2-)
   4136.4 8  B      758.8 5 
  100

   3377.6

   4827.0 15  B     1326.6 14 
  100

   3500.4
(17/2+)
   4856.4 11  B      720.0 8 
  100

   4136.4

   4920.1 10  B     1364.7 8 
  100

   3555.4
(15/2-)
   5018.6 5  B (21/2+)     1518.2 4 
  100
(Q)
   3500.4
(17/2+)
   6814.7 10  B (25/2+)     1796.0 8 
  100

   5018.6
(21/2+)
   8844.4 21  B (29/2+)     2029.7 18 
  100

   6814.7
(25/2+)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  10972 5  B (33/2+)     2128 4 
  100

   8844.4
(29/2+)
  12950 6 ? B (37/2+)     1978 4 ?
  100

  10972
(33/2+)

E(level): From least-squares fit to Eγ’s. Reduced χ2=2.0, but still within the critical χ2 value

Jπ(level): Assignments based on γ(θ) data and band assignments

M(γ): From γ(q) data in 14C(48Ca,αnγ). Mult=d or D+Q is from negative A2 and indicates ΔJ=1 transition, mult=Q is from positive A2 and indicates ΔJ=2 transition

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - ν1/2[440], prolate decoupled band.
   1506.91 14  (9/2+)        
   2344.50 19  (13/2+)      837.59 12 
  100
(Q)
   1506.91
(9/2+)
   3500.4 3  (17/2+)     1155.9 2 
  100
(Q)
   2344.50
(13/2+)
   5018.6 5  (21/2+)     1518.2 4 
  100
(Q)
   3500.4
(17/2+)
   6814.7 10  (25/2+)     1796.0 8 
  100

   5018.6
(21/2+)
   8844.4 21  (29/2+)     2029.7 18 
  100

   6814.7
(25/2+)
  10972 5  (33/2+)     2128 4 
  100

   8844.4
(29/2+)
  12950 6  (37/2+)     1978 4 ?
  100

  10972
(33/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - γ-sequence based on 9/2(-)
   1581.13 19  (9/2-)        
   2098.14 22  (11/2-)      240.8 4 
   516.88 19 
  1156.0 4 
    9.4 12 
   68 4 
  100 24 


(Q)
   1858.1
   1581.13
    941.79
(9/2-)
(9/2-)
(7/2-)
   2611.6 3  (13/2-)      513.4 2 
  1030.8 5 
   76 8 
  100 50 


   2098.14
   1581.13
(11/2-)
(9/2-)
   3555.4 5  (15/2-)      943.8 4 
  100
D+Q
   2611.6
(13/2-)
   4920.1 10      1364.7 8 
  100

   3555.4
(15/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - γ-sequence based on g.s.
      0.0 (3/2)- 21.1 s 10 
% β- = 100
     
    267.87 8  (5/2-)      267.92 9 
  100
D
      0.0
(3/2)-
    692.69 9  (5/2-)      424.90 14 
   692.61 12 
   24.7 17 
  100 5 

D+Q
    267.87
      0.0
(5/2-)
(3/2)-
    941.79 10  (7/2-)      249.08 8 
   673.8 2 
   941.75 18 
   60.9 22 
   28.3 18 
  100 5 
D

(Q)
    692.69
    267.87
      0.0
(5/2-)
(5/2-)
(3/2)-

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.0(3/2)- 21.1 s 10 
% β- = 100
E(level): γ-sequence based on g.s.
    267.87(5/2-)   E(level): γ-sequence based on g.s.
Jπ(level): Parity assignment based on observed direct β-feeding of level in decay of 57V. The level is based on excitations of pf-shell neutrons.
    692.69(5/2-)   E(level): γ-sequence based on g.s.
Jπ(level): Parity assignment based on observed direct β-feeding of level in decay of 57V. The level is based on excitations of pf-shell neutrons.
    941.79(7/2-)   E(level): γ-sequence based on g.s.
Jπ(level): Parity assignment based on observed direct β-feeding of level in decay of 57V. The level is based on excitations of pf-shell neutrons.
   1506.91(9/2+)   E(level): ν1/2[440], prolate decoupled band.
   1581.13(9/2-)   E(level): γ-sequence based on 9/2(-).
   2098.14(11/2-)   E(level): γ-sequence based on 9/2(-).
   2344.50(13/2+)   E(level): ν1/2[440], prolate decoupled band.
   2611.6(13/2-)   E(level): γ-sequence based on 9/2(-).
   3500.4(17/2+)   E(level): ν1/2[440], prolate decoupled band.
   3555.4(15/2-)   E(level): γ-sequence based on 9/2(-).
   4920.1   E(level): γ-sequence based on 9/2(-).
   5018.6(21/2+)   E(level): ν1/2[440], prolate decoupled band.
   6814.7(25/2+)   E(level): ν1/2[440], prolate decoupled band.
   8844.4(29/2+)   E(level): ν1/2[440], prolate decoupled band.
  10972(33/2+)   E(level): ν1/2[440], prolate decoupled band.
  12950(37/2+)   Configuration=π(f7/24)ν(g9/2)ν(f5/2p3/2p1/2)4.
E(level): ν1/2[440], prolate decoupled band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    692.69    424.90I(γ): other: 15 5 in β- decay
    941.79    249.08I(γ): other: 28 14 in β- decay
   1581.13    639.1E(γ): γ from 14C(48Ca,αnγ) only, not reported in β- decay

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