ADOPTED LEVELS, GAMMAS for 157Sm

Author: N. Nica |  Citation: Nucl. Data Sheets 132, 1 (2016) |  Cutoff date: 4-Dec-2015 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=2781 keV 6S(n)= 5388 keV 10S(p)= 9803 keV 6Q(α)= -1772 keV 5
S(2n)= 12629 keV 10S(2p)= 18972 keV 6
Reference: 2017WA10

References:
  A  157Pm β- decay  B  252Cf SF decay

General Comments:

Levels: Band assignments from 157Pm β- decay datasets are not adopted here because the supporting data are not available.

Gammas: See 157Pm β- decay for γ-multipolarity assignments; these (listed in comments) have not been adopted here because the supporting data are not available.









E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)Final Levels
     0.0AB (3/2-) 8.03 m 7 
% β- = 100
    
    52.393 10 AB (5/2-)       52.395 11 
   100
     0.0
(3/2-)
   125.747 14 A        73.361 11 
   125.73 4 
   100 3 
    30 3 
    52.393
     0.0
(5/2-)
(3/2-)
   160.586 12 A       108.191 9 
   160.61 3 
     7.6 2 
   100
    52.393
     0.0
(5/2-)
(3/2-)
   216.426 14 AB (7/2+)       55.837 17 
    90.77 10 
   164.036 12 
     7.5 3 
     2.3 8 
   100 3 
   160.586
   125.747
    52.393


(5/2-)
   348.637 15 A       132.22 3 
   188.052 16 
   222.98 5 
   296.242 25 
   348.56 4 
    14.4 6 
   100 3 
     5.6 4 
    19.2 5 
    17.5 6 
   216.426
   160.586
   125.747
    52.393
     0.0
(7/2+)


(5/2-)
(3/2-)
   353.80 4 A       137.39 4 
   100
   216.426
(7/2+)
   426.209 21 A        72.50 9 
   209.79 3 
   265.619 24 
   300.47 12 
   426.06 11 
 
    60 3 
   100 3 
    23 3 
    29 3 
   353.80
   216.426
   160.586
   125.747
     0.0

(7/2+)


(3/2-)
   490.0 3  B      273.6 3 
   100
   216.426
(7/2+)
   571.29 3 A       518.86 4 
   571.27 4 
    58 2 
   100 3 
    52.393
     0.0
(5/2-)
(3/2-)
   621.39 4 A       495.66 7 
   568.72 10 
   621.55 7 
    83 6 
   <82
   100 6 
   125.747
    52.393
     0.0

(5/2-)
(3/2-)
   694.28 7 A       568.72 10 
   641.81 11 
  <150
   100 11 
   125.747
    52.393

(5/2-)
   838.6 5  B      348.6 3 
   100
   490.0

E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)Final Levels
  1260.7 6  B      422.1 3 
   100
   838.6

  1293.64 9 A       722.35 10 
  1132.8 3 
  1241.36 18 
 
 
   100
   571.29
   160.586
    52.393


(5/2-)
  1362.82 15 A      1146.4 3 
  1202.22 16 
 
   100
   216.426
   160.586
(7/2+)

  1421.84 4 A       727.85 23 
   800.50 8 
   850.50 5 
  1067.5 4 
  1073.24 10 
  1261.43 17 
  1295.45 19 
  1369.73 15 
  1421.94 22 
    10.3 22 
    46.3 22 
   100 4 
 
    46 3 
    28 3 
    25 3 
    42 4 
    19.8 22 
   694.28
   621.39
   571.29
   353.80
   348.637
   160.586
   125.747
    52.393
     0.0







(5/2-)
(3/2-)
  1466.39 24 A      1117.75 24 
   100
   348.637

  1478.05 8 A       783.80 8 
   856.72 15 
   906.49 17 
  1317.59 25 
  1477.8 4 
   100 7 
    46 5 
    41 5 
    36 5 
    23 5 
   694.28
   621.39
   571.29
   160.586
     0.0




(3/2-)
  1674.0 4 A      1052.4 4 
  1622.0 5 
   100 25 
    83 25 
   621.39
    52.393

(5/2-)
  1694.48 24 A      1533.7 3 
  1694.8 4 
   100 17 
    78 17 
   160.586
     0.0

(3/2-)
  1753.9 6  B      493.2 3 
   100
  1260.7

  2314.6 7  B      560.7 3 
   100
  1753.9

E(level): From least-squares fit to γ energies.

E(level): The pseudolevels included in the 157Pm β- decay are not included here.

Jπ(level): Most of the Jπ values (listed here in comments) assigned in the 157Pm β- decay dataset (1994WiZZ, based on expected band structure and Nilsson states) have not been adopted because the supporting data are not available.

E(γ): From 157Pm β- decay, except where noted

Back to top

Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)Final Levels
Band 1 - γ cascade based on (7/2+)
   216.426 14  (7/2+)       
   490.0 3       273.6 3 
   100
   216.426
(7/2+)
   838.6 5       348.6 3 
   100
   490.0

  1260.7 6       422.1 3 
   100
   838.6

  1753.9 6       493.2 3 
   100
  1260.7

  2314.6 7       560.7 3 
   100
  1753.9

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   216.426(7/2+)   E(level): From 252Cf SF decay. γ cascade based on (7/2+).
   490.0   E(level): From 252Cf SF decay. γ cascade based on (7/2+).
   838.6   E(level): From 252Cf SF decay. γ cascade based on (7/2+).
  1260.7   E(level): From 252Cf SF decay. γ cascade based on (7/2+).
  1753.9   E(level): From 252Cf SF decay. γ cascade based on (7/2+).
  2314.6   E(level): From 252Cf SF decay. γ cascade based on (7/2+).

Back to top

Additional Gamma Comments:

E(level)E(gamma)Comments
   490.0   273.6E(γ): From 252Cf SF decay
   621.39   568.72E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   694.28   568.72E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   838.6   348.6E(γ): From 252Cf SF decay
  1260.7   422.1E(γ): From 252Cf SF decay
  1753.9   493.2E(γ): From 252Cf SF decay
  2314.6   560.7E(γ): From 252Cf SF decay

Back to top