ADOPTED LEVELS, GAMMAS for 153Pr

Author: N. Nica |  Citation: Nucl. Data Sheets 170, 1 (2020) |  Cutoff date: 16-Aug-2020 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=5762 keV 12S(n)= 5882 keV 22S(p)= 9.88×103 keV SYQ(α)= -3.77×103 keV 20
Reference: 2017WA10

References:
  A  248Cm SF decay  B  252Cf SF decay

General Comments:

Observed in 252Cf spontaneous fission with mass separation (1987Gr12) and identified as parent of 153Nd and in 235U(n,f) with mass separation (1996Ya12).

There are major discrepancies in between the publications of two groups of authors: 2015Wa28, 2010Hw03 (see 252Cf SF decay dataset), and 2012Ma13 respectively (see 248Cm SF decay dataset, which also includes the 252Cf SF decay study of 2012Ma13).

The discrepancies consist in different assignments of γ-ray cascades to 153Pr nucleus by the two groups. Thus the cascades assigned initially to 153Pr by 2010Hw03 were assigned to 154Pr by 2012Ma13, which were reassigned back to 153Pr by 2015Wa28. α detailed discussion of these assignments is presented in 252Cf SF decay dataset.

Based on the fact that the last published study of 2015Wa28 discussed extensively the differences between 2015Wa28, 2012Ma13 and 2010Hw03, the assignments of 2015Wa28 were adopted in this Adopted Levels, Gammas dataset for 153Pr. However these assignments are still rather tentative and new studies are needed to reassess the differences between the three mentioned references.

Unless stated otherwise data are from 252Cf SF decay dataset

Levels: Although Jπ values were adopted by 2010Hw03, none is confirmed by 2015Wa28 who consider that no Jπ values can be assigned based on existing data

Q-value: Estimated uncertainties (2017Wa10): ΔS(p)=200

Q-value: S(2n)=10931 17, S(2p)=22840 440, Q(β-n)=510 27 (2017Wa10)









E(level)
(keV)		XREF T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0 B 4.29 s 11 
% β- = 100
% β-n = ?
     
   0+XAB        
   0+Y B        
    88.0+X 3  B      88.0 3 
   100
M1
   0+X

   138.4+X 4  B      50.4 3 
   100
E1
    88.0+X

   143.0+Y 5 AB     143.0 5 
   100

   0+Y

   295.1+X 4  B     156.7 3 
  207.1 3 
    28 2 
  ≈100


   138.4+X
    88.0+X


   345.0+X 5  B      49.9 3 
  206.6 3 
 
 
E1

   295.1+X
   138.4+X


   364.9+Y 7 AB     221.9 5 
   100

   143.0+Y

   624.5+X 6  B     279.5 3 
   100

   345.0+X

   662.6+Y 9  B     297.7 5 
   100

   364.9+Y

   975.6+X 6  B     351.1 3 
   100

   624.5+X

  1031.5+Y 10  B     368.9 5 
   100

   662.6+Y

  1393.4+X 7  B     417.8 3 
   100

   975.6+X

  1467.1+Y 12  B     435.6 5 
   100

  1031.5+Y

  1871.3+X 8  B     477.9 3 
   100

  1393.4+X

  1963.3+Y 13  B     496.2 5 
   100

  1467.1+Y

  2399.7+X 8  B     528.4 3 
   100

  1871.3+X

  2507.3+Y 14  B     544.0 5 ?
   100

  1963.3+Y

E(level): From least-squares fit to Eγ data

E(γ): Uncertainties assigned by evaluator: 0.3 keV for Iγ|>20 and 0.5 for Iγ<20, or when Iγ not stated

I(γ): From 252Cf SF decay (2015Wa28; for the Eγ’s < 100 keV the relative intensities are from e-mail reply from the first author (E.H. Wang) of 2015Wa28 to the compiler (B. Singh) on Sept 17, 2015)

M(γ): From 2010Hw03 based on α(exp)

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Band Transitions:

E(level)
(keV)		 T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Band based on 0+x level
   0+X        
    88.0+X 3         
   295.1+X 4         
E(level)
(keV)		 T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band based on 138.4+x level
   138.4+X 4         
   345.0+X 5         
   624.5+X 6         
   975.6+X 6      351.1 3 
   100

   624.5+X

  1393.4+X 7      417.8 3 
   100

   975.6+X

  1871.3+X 8      477.9 3 
   100

  1393.4+X

  2399.7+X 8      528.4 3 
   100

  1871.3+X

E(level)
(keV)		 T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band based on 0+y level
   0+Y        
   143.0+Y 5         
   364.9+Y 7         
   662.6+Y 9      297.7 5 
   100

   364.9+Y

  1031.5+Y 10      368.9 5 
   100

   662.6+Y

  1467.1+Y 12      435.6 5 
   100

  1031.5+Y

  1963.3+Y 13      496.2 5 
   100

  1467.1+Y

  2507.3+Y 14      544.0 5 ?
   100

  1963.3+Y

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   0+X   E(level): Band based on 0+x level.
   0+Y   E(level): Band based on 0+y level.
    88.0+X   E(level): Band based on 0+x level.
   138.4+X   E(level): Band based on 138.4+x level.
   143.0+Y   E(level): Band based on 0+y level.
   295.1+X   E(level): Band based on 0+x level.
   345.0+X   E(level): Band based on 138.4+x level.
   364.9+Y   E(level): Band based on 0+y level.
   624.5+X   E(level): Band based on 138.4+x level.
   662.6+Y   E(level): Band based on 0+y level.
   975.6+X   E(level): Band based on 138.4+x level.
  1031.5+Y   E(level): Band based on 0+y level.
  1393.4+X   E(level): Band based on 138.4+x level.
  1467.1+Y   E(level): Band based on 0+y level.
  1871.3+X   E(level): Band based on 138.4+x level.
  1963.3+Y   E(level): Band based on 0+y level.
  2399.7+X   E(level): Band based on 138.4+x level.
  2507.3+Y   E(level): Band based on 0+y level.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   138.4+X    50.4I(γ): 2015Wa28 reported combined relative intensity (of <127) for 49.9+50.4 γ rays
   295.1+X   207.1I(γ): 2015Wa28 reported combined relative intensity (of 100) for 206.6+207.1 γ rays
   345.0+X    49.9I(γ): 2015Wa28 reported combined relative intensity (of <127) for 49.9+50.4 γ rays
M(γ): see comments for 50.4γ from 138.4+x level
   206.6I(γ): 2015Wa28 reported combined relative intensity (of 100) for 206.6+207.1 γ rays

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