ADOPTED LEVELS, GAMMAS for 149Pr

Authors: Balraj Singh and Jun Chen |  Citation: Nucl. Data Sheets 185, 2 (2022) |  Cutoff date: 23-Aug-2022 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=3336 keV 10S(n)= 6575 keV 18S(p)= 7930 keV 15Q(α)= -629 keV 16
Reference: 2021WA16

References:
  A  149Ce β- decay (5.12 S)  B  248Cm,252Cf SF decay
  C  252Cf SF decay  D  150Nd(d,3He)

General Comments:

Production and identification of 149Pr: 1964Ho03, 1967Va14, 1973Oh08, 1977Pi06.

Mass measurements by Penning-trap method: 2006Sa56, 2004Cl07

2012Th09: theory: calculated configuration admixtures in ground state and isomer, E1 transition rate, octupole correlation and Coriolis mixing in low-lying states using quasiparticle phonon model combined with particle-rotor model.

Other theoretical studies: consult the NSR database at www.nndc.bnl.gov/nsr/ for three references for structure and one for radioactive decay listed under ’document records’ which can be accessed through web retrieval of the ENSDF database at www.nndc.bnl.gov/ensdf/

Q-value: S(2n)=11738 19, S(2p)=18939 15 (2021Wa16)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCD (5/2+) 2.26 m 8 
% β- = 100
     
    40   D        
    58.11 6 ABC  (7/2-) 23.4 ns 18     58.2 1 
  100
E1
     0.0
(5/2+)
    80   D        
    86.40 6 A C  (7/2+) 4.2 ns 5     28.4 1 
   86.5 1 
  >27
  100 5 
[E1]
M1
    58.11
     0.0
(7/2-)
(5/2+)
   106.86 7 A         48.8 1 
  106.9 1 
  100 5 
    7.2 4 


    58.11
     0.0
(7/2-)
(5/2+)
   125.55 7 A    1.0 ns 2     67.4 1 
  125.6 1 
  100 5 
    0.8 3 


    58.11
     0.0
(7/2-)
(5/2+)
   161.3 3  BC  (11/2-)     103.2 3 
  100
(E2)
    58.11
(7/2-)
   162.97 7 A         56.2 1 
   76.5 1 
  104.9 1 
   27.3 21 
  100 5 
   87 4 



   106.86
    86.40
    58.11

(7/2+)
(7/2-)
   174.5 4   C  (9/2+)      13.2S
  116.4 5 
 
 


   161.3
    58.11
(11/2-)
(7/2-)
   215.46 8 A         52.6 1 
  128.9 1 
  157.5 1 
   12.9 10 
  100 5 
    6.2 10 



   162.97
    86.40
    58.11

(7/2+)
(7/2-)
   220   D        
   230.98 8 A        144.9 1 
  172.6 1 
  100 4 
   66 4 


    86.40
    58.11
(7/2+)
(7/2-)
   260   D        
   311.90 12 A        225.5 1 
  100

    86.40
(7/2+)
   364.9 5   C  (11/2+)     278.5 5 
  100

    86.40
(7/2+)
   380.27 7 A        294.1 1 
  322.2 1 
  380.0 1 
   21.5 11 
   17.0 7 
  100 4 



    86.40
    58.11
     0.0
(7/2+)
(7/2-)
(5/2+)
   381.1 4  BC  (15/2-)     219.8 3 
  100

   161.3
(11/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   397.70 12 A        311.3 1 
  100

    86.40
(7/2+)
   406.9 4   C  (13/2+)      25.8S
  232.4 3 
  245.6 3 
 
  100 5 
  100 5 



   381.1
   174.5
   161.3
(15/2-)
(9/2+)
(11/2-)
   440   D        
   448.33 7 A        217.4 1 
  233.0 1 
  285.3 1 
  322.8 1 
  361.8 1 
  390.2 1 
    6.8 6 
   42.3 23 
   49.4 26 
  100 6 
   45.2 26 
   61 3 






   230.98
   215.46
   162.97
   125.55
    86.40
    58.11




(7/2+)
(7/2-)
   546.16 13 A        330.7 1 
  100

   215.46

   550   D        
   575.28 13 A        344.3 1 
  100

   230.98

   590   D        
   660   D        
   711.4 5  BC  (19/2-)     330.3 3 
  100

   381.1
(15/2-)
   736.5 7   C  (15/2+)     371.6 5 
  100

   364.9
(11/2+)
   751.6 5   C  (17/2+)     344.7 5 
  370.5 5 
   69 5 
  100 10 


   406.9
   381.1
(13/2+)
(15/2-)
   951.11 9 A        864.7 1 
  893.0 1 
   89 4 
  100 5 


    86.40
    58.11
(7/2+)
(7/2-)
   980   D        
  1127.5 6  BC  (23/2-)     416.0 3 
  100

   711.4
(19/2-)
  1173.9 9   C  (19/2+)     437.4 5 
  100

   736.5
(15/2+)
  1189.0 6   C  (21/2+)     437.4 5 
  477.6 5 
  100 9 
   30 4 


   751.6
   711.4
(17/2+)
(19/2-)
  1607.4 6  BC  (27/2-)     479.8 3 
  100

  1127.5
(23/2-)
  1664.6 10   C  (23/2+)     490.7 5 
  100

  1173.9
(19/2+)
  1695.3 6   C  (25/2+)     506.4 5 
  568.0 5 
  100 8 
   27 3 


  1189.0
  1127.5
(21/2+)
(23/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2129.9 8  BC  (31/2-)     522.5 5 
  100

  1607.4
(27/2-)
  2191.9 12   C  (27/2+)     527.3 5 
  100

  1664.6
(23/2+)
  2230.4 7   C  (29/2+)     535.5 5 
  622.7 5 
  100 10 
  <13


  1695.3
  1607.4
(25/2+)
(27/2-)
  2664.4 10  BC  (35/2-)     534.5 5 
  100

  2129.9
(31/2-)
  2722.1 9   C  (33/2+)     491.7 5 
  100

  2230.4
(29/2+)
  3184.7 11  BC  (39/2-)     520.3 5 
  100

  2664.4
(35/2-)
  3723.6 12   C  (43/2-)     538.9 5 
  100

  3184.7
(39/2-)

E(level): From a least-squares fit to Eγ data. There is some evidence of two additional nanosecond isomers, connected with 54.7γ and 143γ, which are not placed in a decay scheme.

Jπ(level): As proposed by 2015Wa28 in 252Cf SF decay, based on band structures.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - π1/2[550] band.
    58.11 6  (7/2-) 23.4 ns 18       
   161.3 3  (11/2-)        
   381.1 4  (15/2-)     219.8 3 
  100

   161.3
(11/2-)
   711.4 5  (19/2-)        
  1127.5 6  (23/2-)     416.0 3 
  100

   711.4
(19/2-)
  1607.4 6  (27/2-)     479.8 3 
  100

  1127.5
(23/2-)
  2129.9 8  (31/2-)     522.5 5 
  100

  1607.4
(27/2-)
  2664.4 10  (35/2-)     534.5 5 
  100

  2129.9
(31/2-)
  3184.7 11  (39/2-)     520.3 5 
  100

  2664.4
(35/2-)
  3723.6 12  (43/2-)     538.9 5 
  100

  3184.7
(39/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Possible octupole band.
   174.5 4  (9/2+)        
   406.9 4  (13/2+)        
   751.6 5  (17/2+)     344.7 5 
  370.5 5 
   69 5 
  100 10 


   406.9
   381.1
(13/2+)
(15/2-)
  1189.0 6  (21/2+)        
  1695.3 6  (25/2+)     506.4 5 
  568.0 5 
  100 8 
   27 3 


  1189.0
  1127.5
(21/2+)
(23/2-)
  2230.4 7  (29/2+)     535.5 5 
  622.7 5 
  100 10 
  <13


  1695.3
  1607.4
(25/2+)
(27/2-)
  2722.1 9  (33/2+)     491.7 5 
  100

  2230.4
(29/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - π5/2[413] band.
     0.0 (5/2+) 2.26 m 8 
% β- = 100
     
    86.40 6  (7/2+) 4.2 ns 5       
   364.9 5  (11/2+)     278.5 5 
  100

    86.40
(7/2+)
   736.5 7  (15/2+)        
  1173.9 9  (19/2+)     437.4 5 
  100

   736.5
(15/2+)
  1664.6 10  (23/2+)     490.7 5 
  100

  1173.9
(19/2+)
  2191.9 12  (27/2+)     527.3 5 
  100

  1664.6
(23/2+)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    58.11 (7/2-) 23.4 ns 18     58.2 1 E11.089B(E1)(W.u.)=2.50E-5 +21-18, α=1.089 16
    86.40 (7/2+) 4.2 ns 5     28.4 1 [E1]1.347α=1.347 23
(7/2+) 4.2 ns 5     86.5 1 M11.963B(M1)(W.u.)<0.0023, α=1.963 28
   161.3 (11/2-)     103.2 3 (E2)1.893α=1.893 33

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(5/2+) 2.26 m 8 
% β- = 100
XREF: d(?).
E(level): π5/2[413] band.
    40   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
    58.11(7/2-) 23.4 ns 18  E(level): π1/2[550] band.
    80   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
    86.40(7/2+) 4.2 ns 5  E(level): π5/2[413] band.
   161.3(11/2-)   E(level): π1/2[550] band.
   174.5(9/2+)   E(level): Possible octupole band.
   220   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
   260   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
   364.9(11/2+)   E(level): π5/2[413] band.
   381.1(15/2-)   E(level): π1/2[550] band.
   406.9(13/2+)   E(level): Possible octupole band.
   440   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
   550   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
   590   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
   660   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
   711.4(19/2-)   E(level): π1/2[550] band.
   736.5(15/2+)   E(level): π5/2[413] band.
   751.6(17/2+)   E(level): Possible octupole band.
   980   E(level): Tentative level energy from (d,3He) (1981VaZJ report). It is possible levels are shifted in energy, due to calibration issues, as pointed out in the 150Nd(d,3He) dataset.
  1127.5(23/2-)   E(level): π1/2[550] band.
  1173.9(19/2+)   E(level): π5/2[413] band.
  1189.0(21/2+)   E(level): Possible octupole band.
  1607.4(27/2-)   E(level): π1/2[550] band.
  1664.6(23/2+)   E(level): π5/2[413] band.
E(level)Jπ(level)T1/2(level)Comments
  1695.3(25/2+)   E(level): Possible octupole band.
  2129.9(31/2-)   E(level): π1/2[550] band.
  2191.9(27/2+)   E(level): π5/2[413] band.
  2230.4(29/2+)   E(level): Possible octupole band.
  2664.4(35/2-)   E(level): π1/2[550] band.
  2722.1(33/2+)   E(level): Possible octupole band.
  3184.7(39/2-)   E(level): π1/2[550] band.
  3723.6(43/2-)   E(level): π1/2[550] band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    58.11    58.2E(γ): from β- decay. Other: 58.5 3 in 252Cf SF
M(γ): from ce data in 248Cm,252Cf SF (2010Rz02)
    86.40    86.5E(γ): From 149Ce β- decay
I(γ): From 149Ce β- decay
M(γ): from total conversion coefficient in 252Cf SF decay (2015Wa28)
   161.3   103.2M(γ): M1,E2 from total conversion coefficient in 248Cm,252Cf SF (2010Rz02), but (E2) from assigned Jπ values
   380.27   294.1E(γ): From 149Ce β- decay
I(γ): From 149Ce β- decay
   322.2E(γ): From 149Ce β- decay
I(γ): From 149Ce β- decay
  1173.9   437.4E(γ): Multiply placed
  1189.0   437.4E(γ): Multiply placed

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