ADOPTED LEVELS, GAMMAS for 50Mn

Authors: Jun Chen and Balraj Singh |  Citation: Nucl. Data Sheets 157, 1 (2019) |  Cutoff date: 15-Apr-2019 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8151 keV 8S(n)= 13078.3 keV 22S(p)= 4583.5 keV 22Q(α)= -7977.2 keV 5
Reference: 2017WA10

References:
  A  50Fe ε decay (152.0 MS)  B  24Mg(32S,APNG)
  C  28Si(28Si,APNG)  D  40Ca(12C,pnγ)
  E  50Cr(p,n)  F  50Cr(p,nγ)
  G  50Cr(3He,t) 

General Comments:

Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for 79 primary references dealing with various aspects of nuclear structure

Levels: t(Isotopic spin): from 40Ca(12C,pnγ), except as noted.

Q-value: S(2n)=29474 7, S(2p)=12727.8 11 (2017Wa10)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCDEFG 0+ 283.19 ms 10 
% ε = 100
     
   225.28 9  BCDEFG 5+ 1.75 m 3 
% ε = 100
     
   651.06 7 ABCDEFG 1+      650.94 8 
  100
M1
     0.0
0+
   659.17 12  BCD    (6+)      434.0 1 
  100

   225.28
5+
   800.20 7 ABCDEFG 2+ 4.44 ps 14     149.1 1 
   799.9 2 
  100 9 
   64 8 
(M1)
E2
   651.06
     0.0
1+
0+
  1030.55 12  BCDEFG (7+)      371.4 1 
   805.4 1 
   15 3 
  100 2 

(Q)
   659.17
   225.28
(6+)
5+
  1143.28 8  BCDEFG 3+ 0.33 ps +11-8     343.0 1 
   492.0 1 
  100 2 
    1.2 1 
M1(+E2)
[E2]
   800.20
   651.06
2+
1+
  1727.36 10    DEF  1-      927.1 1 
  1727.4 2 
   49.5 12 
  100.0 23 
D(+Q)
E1
   800.20
     0.0
2+
0+
  1765.4 5     EF  (3+:7+)     1540.1 5 
  100

   225.28
5+
  1797.91 12     EFG (3+)      997.7 1 
  1572.9 5 ?
  100
 
D(+Q)

   800.20
   225.28
2+
5+
  1874.60 8  B DEFG 2(+)      731.2 2 
  1074.4 1 
  1223.6 1 
  1874.4 2 
   34.4 10 
   31 1 
  100.0 24 
   50.0 15 
D
(M1+E2)
D(+Q)

  1143.28
   800.20
   651.06
     0.0
3+
2+
1+
0+
  1917.11 12  BCDEFG 5+ > 0.7 ps    773.6 1 
   886.7 1 
  1258.0 1 
  100 5 
   35 5 
   22 5 
E2


  1143.28
  1030.55
   659.17
3+
(7+)
(6+)
  1931.53 10  B DEFG 4+ < 0.090 ps    788.0 1 
  1131.2 2 
  100 3 
    5.9 8 
(M1(+E2))
E2
  1143.28
   800.20
3+
2+
  2119.81 18  BCD    (8+) < 0.73 ps   1089.3 2 
  1460.6 2 
  100 12 
   90 20 

(Q)
  1030.55
   659.17
(7+)
(6+)
  2157.59 13      F  (1+:5+)     1014.3 1 
  100

  1143.28
3+
  2300.72 12      FG (0+:4+)     1500.5 1 
  100

   800.20
2+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2340.11 16  B D FG (3-)      612.5 2 
  1540.2 2 
   13.1 14 
  100 3 

D+Q
  1727.36
   800.20
1-
2+
  2403.87 9 A     G 1+     1603.7 2 
  2403.8 1 
   16.1 20 
  100 5 


   800.20
     0.0
2+
0+
  2477.93 12      FG (3)     1677.7 1 
  100
D(+Q)
   800.20
2+
  2534.26 23  BCD    (9+) 0.52 ps 8    1503.7 2 
  100
(E2)
  1030.55
(7+)
  2556.98 14  B D FG (5+)      625.2 1 
  1413.9 1 
  1897.9 3 
  100 3 
   52 2 
   81 3 
D


  1931.53
  1143.28
   659.17
4+
3+
(6+)
  2614.6 5    D F  (0:3-)      887.2 4 
  100

  1727.36
1-
  2684.23 9 A     G 1+     1883.8 2 
  2684.2 1 
   10 3 
  100 7 


   800.20
     0.0
2+
0+
  2716.16 10  B   FG (4+)      841.6 1 
  1572.8 1 
  100 4 
    7.6 4 
Q

  1874.60
  1143.28
2(+)
3+
  2790 20       G (1)+        
  2980.12 21      FG (0:3+)     2329.0 2 
  100

   651.06
1+
  3177 20       G        
  3256.1 10  B D  G (6+) < 0.07 ps   1339.0 10 
  100
D
  1917.11
5+
  3370.11 19  B D F  (5-)     1030.0 1 
  1437
 
 
Q

  2340.11
  1931.53
(3-)
4+
  3380.12 10 A     G 1+     3380.0 1 
  100

     0.0
0+
  3438.76 14    D FG (2+:6+)     1507.2 1 
  100

  1931.53
4+
  3477.66 10      F  (0+:3-)     1603.0 1 
  1750.3 1 
  100 6 
   99 6 


  1874.60
  1727.36
2(+)
1-
  3520 20       G        
  3561.94 24      F      1261.2 2 
  100

  2300.72
(0+:4+)
  3638.12 19      F  (2+:5+)     1706.5 2 
  2494.9 3 
   29 2 
  100 6 


  1931.53
  1143.28
4+
3+
  3643.5 3 A     G 1+     3643.4 3 
  100

     0.0
0+
  3723.1 11  B      (3,4,5-)     1383
 

  2340.11
(3-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  3850      G        
  4012.9 12 A     G 1+     4012.7 12 
  100

     0.0
0+
  4253.9 5  BC     (8-)     1720
  2135
  3223
  3594
  4028
 
 
 
 
 



[M2]
[E3]
  2534.26
  2119.81
  1030.55
   659.17
   225.28
(9+)
(8+)
(7+)
(6+)
5+
  4315.9 14 A     G 1+     4315.7 14 
  100

     0.0
0+
  4584 20       G (1)+        
  4585.3 11  BC     (11+)     2051
 

  2534.26
(9+)
  4837.9 11  BC     (10-)      584
 

  4253.9
(8-)
  4875.1 11  B      (7-)     1505
 
Q
  3370.11
(5-)
  5728 4       G        
  6147.9 15  BC     (12-)     1310
 

  4837.9
(10-)
  6461.2 15  B      (9-)     1586
 
Q
  4875.1
(7-)
  6937.4 15  BC     (13+)     2352
 

  4585.3
(11+)
  8277.4 18  BC     (15+) > 2 ps   1340
 

  6937.4
(13+)

E(level): From least-squares fit to Eγ values for levels populated in γ-ray studies. Reduced χ2=2.0 is somewhat higher than the critical χ2=1.8. Other levels are from (3He,t). Comparison of level energies in ε decay and corresponding energies in (3He,t) from 2005Fu16 shows that level energies in the latter are systematically higher, differing by as much as 17 keV at 4.3 MeV. Evaluators have increased the uncertainty to 20 keV, from the original uncertainty of 4 keV in 2005Fu16, when the level energy is taken from this work

T1/2(level): From DSAM in 40Ca(12C,pnγ) (2002Pi04), except as noted.

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Band based on GS,T=1.
     0.0 0+ 283.19 ms 10 
% ε = 100
     
   800.20 7  2+ 4.44 ps 14       
  1931.53 10  4+ < 0.090 ps    788.0 1 
  1131.2 2 
  100 3 
    5.9 8 
(M1(+E2))
E2
  1143.28
   800.20
3+
2+
  3256.1 10  (6+) < 0.07 ps   1339.0 10 
  100
D
  1917.11
5+
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band based on 5+,T=0.
   225.28 9  5+ 1.75 m 3 
% ε = 100
     
  1030.55 12  (7+)        
  2534.26 23  (9+) 0.52 ps 8    1503.7 2 
  100
(E2)
  1030.55
(7+)
  4585.3 11  (11+)     2051
 

  2534.26
(9+)
  6937.4 15  (13+)     2352
 

  4585.3
(11+)
  8277.4 18  (15+) > 2 ps   1340
 

  6937.4
(13+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band based on 1+
   651.06 7  1+        
  1143.28 8  3+ 0.33 ps +11-8       
  1917.11 12  5+ > 0.7 ps    773.6 1 
   886.7 1 
  1258.0 1 
  100 5 
   35 5 
   22 5 
E2


  1143.28
  1030.55
   659.17
3+
(7+)
(6+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Band based on (6+)
   659.17 12  (6+)        
  2119.81 18  (8+) < 0.73 ps      
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - Band based on (3-).
  2340.11 16  (3-)        
  3370.11 19  (5-)        
  4875.1 11  (7-)     1505
 
Q
  3370.11
(5-)
  6461.2 15  (9-)     1586
 
Q
  4875.1
(7-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 6 - Band based on (8-)
  4253.9 5  (8-)        
  4837.9 11  (10-)        
  6147.9 15  (12-)     1310
 

  4837.9
(10-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Additional Data
   800.20 2+ 4.44 ps 14     799.9 2 E2 B(E2)(W.u.)=13.9 +24-22
  1143.28 3+ 0.33 ps +11-8     343.0 1 M1(+E2)+0.01 2B(M1)(W.u.)=1.7 5
3+ 0.33 ps +11-8     492.0 1 [E2] B(E2)(W.u.)=64 +30-21
  1727.36 1-      927.1 1 D(+Q)+0.05 10 
  1797.91 (3+)      997.7 1 D(+Q)-0.12 10 
  1874.60 2(+)     1074.4 1 (M1+E2)-3.7 +4-5 
2(+)     1223.6 1 D(+Q)-0.01 2 
  1931.53 4+ < 0.090 ps    788.0 1 (M1(+E2))-0.01 2 
4+ < 0.090 ps   1131.2 2 E2 B(E2)(W.u.)>15
  2340.11 (3-)     1540.2 2 D+Q-0.13 4 
  2477.93 (3)     1677.7 1 D(+Q)+0.01 6 
  2534.26 (9+) 0.52 ps 8    1503.7 2 (E2) B(E2)(W.u.)=12.9 +24-17

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 283.19 ms 10 
% ε = 100
T=1
Isotope shift measurement: δν(55Mn,50Mn)=-1573 Hz 2 (2010Ch15, laser spectroscopy).
E(level): Band based on GS,T=1.
   225.285+ 1.75 m 3 
% ε = 100
Q=+0.80 12 (2010Ch15), μ=+2.76 1 (2010Ch15)
Isotope shift measurement: δν(55Mn,50Mn)=-1514 Hz 8 (2010Ch15, laser spectroscopy).
E(level): Band based on 5+,T=0.
   651.061+   E(level): Band based on 1+.
   659.17(6+)   E(level): Band based on (6+).
   800.202+ 4.44 ps 14  T=1
E(level): Band based on GS,T=1.
  1030.55(7+)   T=0
E(level): Band based on 5+,T=0.
  1143.283+ 0.33 ps +11-8  T=0
XREF: γ(1147).
E(level): Band based on 1+.
  1765.4(3+:7+)   XREF: E(+1770).
  1797.91(3+)   XREF: γ(1805).
  1874.602(+)   XREF: γ(1860).
  1917.115+ > 0.7 ps T=0
E(level): Band based on 1+.
  1931.534+ < 0.090 ps T=1
E(level): Band based on GS,T=1.
  2119.81(8+) < 0.73 ps T=0
ΔJ=(2) 1460.6γ to (6+); 1089.3γ to (7+); band member.
E(level): Band based on (6+).
  2300.72(0+:4+)   XREF: γ(2290).
  2340.11(3-)   XREF: γ(?).
E(level): Band based on (3-).
  2403.871+   XREF: γ(2411).
  2477.93(3)   XREF: γ(2455).
  2534.26(9+) 0.52 ps 8  T=0
E(level): Band based on 5+,T=0.
  2684.231+   XREF: γ(2694).
  2790(1)+   E(level): Energy uncertainty increased to 20 keV from 4 keV listed by 2005Fu16. See general comment for level energies.
Jπ(level): L(3He,t)=0 from 0+ target, interpreted as Gamow-Teller transition (2005Fu16).
  3177   Not a > transition from L(3He,t)|>1.
E(level): Energy uncertainty increased to 20 keV from 4 keV listed by 2005Fu16. See general comment for level energies.
  3256.1(6+) < 0.07 ps T=(1)
XREF: γ(3240).
E(level): Band based on GS,T=1.
  3370.11(5-)   E(level): Band based on (3-).
  3380.121+   XREF: γ(3392).
  3643.51+   XREF: γ(3654).
E(level)Jπ(level)T1/2(level)Comments
  4012.91+   XREF: γ(4028).
  4253.9(8-)   E(level): Band based on (8-).
  4315.91+   XREF: γ(4333).
  4584(1)+   E(level): Energy uncertainty increased to 20 keV from 4 keV listed by 2005Fu16. See general comment for level energies.
Jπ(level): L(3He,t)=0 from 0+ target, interpreted as Gamow-Teller transition (2005Fu16).
  4585.3(11+)   E(level): Band based on 5+,T=0.
  4837.9(10-)   E(level): Band based on (8-).
  4875.1(7-)   E(level): Band based on (3-).
  6147.9(12-)   E(level): Band based on (8-).
  6461.2(9-)   E(level): Band based on (3-).
  6937.4(13+)   E(level): Band based on 5+,T=0.
  8277.4(15+) > 2 ps E(level): Band based on 5+,T=0.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   651.06   650.94E(γ): weighted average of 650.99 6 from 50Fe ε decay (152.0 ms) and 650.8 1 from (p,nγ)
   659.17   434.0E(γ): From 40Ca(12C,pnγ).
   800.20   149.1E(γ): weighted average of 149.0 1 from 50Fe ε decay (152.0 ms), 149.2 1 from (12C,pnγ), and 149.2 1 from (p,nγ)
I(γ): from 50Fe ε decay. Others: 100 30 from (28Si,αpnγ), 100 2 from 2000Sc35 and 100 from (1971Ki17) in (p,nγ)
M(γ): ΔJ=1, dipole from DCO in (32S,αpnγ); ΔJπ requires M1. δ(Q/d)=+0.02 3 from γγ(θ) in (p,nγ)
   799.9E(γ): weighted average of 799.6 2 from 50Fe ε decay (152.0 ms) and 800.0 1 from (p,nγ)
I(γ): from 50Fe ε decay. Others: 60 30 from (28Si,αpnγ), 56 2 from 1971Ki17 in (p,nγ), but 156 3 from 2000Sc35 in (p,nγ) is in disagreement
  1030.55   371.4E(γ): From 40Ca(12C,pnγ).
I(γ): weighted average of 17.6 24 from (28Si,αpnγ) and 12 3 from (12C,pnγ)
   805.4E(γ): weighted average of 805.4 1 from (12C,pnγ) and 805.1 5 from (p,nγ)
I(γ): from (12C,pnγ). Other: 100.0 24 from (28Si,αpnγ)
M(γ): From DCO ratio and γ(θ) in 28Si(28Si,αpnγ).
  1143.28   343.0M(γ): also ΔJ=1,d from DCO in (32S,αpnγ)
  1874.60   731.2M(γ): From DCO ratio in 24Mg(32S,αpnγ).
  1074.4M(γ): D+Q from γγ(θ) in (p,nγ); polarity from level scheme
  1917.11   773.6M(γ): ΔJ=2, Q from DCO in (32S,αpnγ); RUL
   886.7E(γ): From 40Ca(12C,pnγ).
I(γ): From 40Ca(12C,pnγ).
  1258.0E(γ): From 40Ca(12C,pnγ).
I(γ): From 40Ca(12C,pnγ).
  1931.53   788.0M(γ): d from DCO in (32S,αpnγ), M1(+E2) from ΔJπ
  1131.2M(γ): Q from γγ(θ) in (p,nγ); M2 ruled out by RUL
  2119.81  1089.3E(γ): From 40Ca(12C,pnγ).
I(γ): From 40Ca(12C,pnγ).
  1460.6E(γ): From 40Ca(12C,pnγ).
I(γ): From 40Ca(12C,pnγ).
M(γ): From DCO ratio and γ(θ) in 28Si(28Si,αpnγ).
  2403.87  1603.7E(γ): From 50Fe ε decay
I(γ): From 50Fe ε decay
  2403.8E(γ): From 50Fe ε decay
I(γ): From 50Fe ε decay
  2534.26  1503.7E(γ): From 40Ca(12C,pnγ).
M(γ): (Q) from DCO ratio and γ(θ) in 28Si(28Si,αpnγ); M2 ruled out by RUL.
  2556.98   625.2M(γ): From DCO ratio in 24Mg(32S,αpnγ).
  1897.9E(γ): From 40Ca(12C,pnγ).
I(γ): From 40Ca(12C,pnγ).
  2684.23  1883.8E(γ): From 50Fe ε decay
I(γ): From 50Fe ε decay
  2684.2E(γ): From 50Fe ε decay
I(γ): From 50Fe ε decay
  2716.16   841.6M(γ): From DCO ratio in 24Mg(32S,αpnγ).
  3256.1  1339.0E(γ): From 40Ca(12C,pnγ).
I(γ): From 40Ca(12C,pnγ).
M(γ): From DCO ratio in 24Mg(32S,αpnγ).
E(level)E(gamma)Comments
  3370.11  1030.0M(γ): From DCO ratio in 24Mg(32S,αpnγ).
  1437E(γ): From 24Mg(32S,αpnγ).
M(γ): ΔJ=2, Q from DCO in (32S,αpnγ). Conflicting assignment if Jπ(3370 level)=5-
  3380.12  3380.0E(γ): From 50Fe ε decay
  3643.5  3643.4E(γ): From 50Fe ε decay
  4012.9  4012.7E(γ): From 50Fe ε decay
  4253.9  1720E(γ): From 24Mg(32S,αpnγ).
  2135E(γ): From 24Mg(32S,αpnγ).
  3223E(γ): From 24Mg(32S,αpnγ).
  3594E(γ): From 28Si(28Si,αpnγ) only
  4028E(γ): From 28Si(28Si,αpnγ) only
  4315.9  4315.7E(γ): From 50Fe ε decay
  4585.3  2051E(γ): From 24Mg(32S,αpnγ).
  4837.9   584E(γ): From 24Mg(32S,αpnγ).
  4875.1  1505E(γ): From 24Mg(32S,αpnγ).
M(γ): From DCO ratio in 24Mg(32S,αpnγ).
  6147.9  1310E(γ): From 24Mg(32S,αpnγ).
  6461.2  1586E(γ): From 24Mg(32S,αpnγ).
M(γ): From DCO ratio in 24Mg(32S,αpnγ).

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