ADOPTED LEVELS, GAMMAS for 236Pu

Author: Shaofei Zhu |  Citation: Nucl. Data Sheets 182, 2 (2022). |  Cutoff date: 1-Apr-2022 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-3139 keV SYS(n)= 7352 keV 21S(p)= 5430.5 keV 18Q(α)= 5867.15 keV 8
Reference: 2021WA16

References:
  A  236Np β- decay (155×103 Y)  B  236Np β- decay (22.5 H)
  C  240Cm α decay  D  236Am ε decay (3.6 M)
  E  236Am ε decay (2.9 M)  F  235U(α,3nγ)
  G  237Np(209Bi,210PBG) 








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0ABCDEFG 0+ 2.858 y 8 
% α = 100
% SF = 1.9×10-7 4
     
    44.63 9 ABCDEFG 2+       44.63 10 
  100
E2
     0
0+
   147.45 9 A CDEFG 4+      102.82 2 
  100
[E2]
    44.63
2+
   305.80 10 A CD FG 6+      158.35 2 
  100
E2
   147.45
4+
   515.70 22      FG 8+      209.9 2 
  100
E2
   305.80
6+
   698.31 12     E   1-      653.68 12 
   698.3 2 
  100 15 
   71 11 
[E1]
[E1]
    44.63
     0
2+
0+
   758.02 17     E   3-      610.8 3 
   713.3 2 
   58 11 
  100 17 
[E1]
[E1]
   147.45
    44.63
4+
2+
   773.5 3      FG 10+      257.8 2 
  100
[E2]
   515.70
8+
   866.00 15    D    5-      560.3 2 
   718.6 2 
   43 8 
  100 16 
[E1]
[E1]
   305.80
   147.45
6+
4+
  1074.3 4      FG 12+      300.8 2 
  100
[E2]
   773.5
10+
  1185.45 15    D    5- 1.2 µs 3 
% IT = 100
   319.50 11 
   879.7 2 
  1037.8 2 
   66 10 
  100 14 
   53 8 
M1(+E2)
[E1]
[E1]
   866.00
   305.80
   147.45
5-
6+
4+
  1311.51 23     E   (0-)      613.2 2 
  100

   698.31
1-
  1340.82 19     E   (2-)      582.8 2 
   642.5 2 
  100 15 
   53 9 


   758.02
   698.31
3-
1-
  1413.6 4      FG 14+      339.3 2 
  100
[E2]
  1074.3
12+
  1786.0 5      FG 16+      372.4 3 
  100
[E2]
  1413.6
14+
  2188.0 7       G 18+      402.0 5 
  100

  1786.0
16+
  2615.7 9       G 20+      427.7 5 
  100

  2188.0
18+
    ≈3E+3        (0+) 37 ps 4 
% SF ≤ 100
     
  3063.7 10       G 22+      448.0 5 
  100

  2615.7
20+
  3529.6 11       G 24+      465.9 5 
  100

  3063.7
22+
     4.1E+3 2         34 ns 8 
% SF ≤ 100
     

E(level): Deduced by the evaluator from a least-squares fit to γ-ray energies.

Jπ(level): From band structure, unless indicated otherwise.

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Kπ=0+ g.s. rotational band. Band assignment
     0 0+ 2.858 y 8 
% α = 100
% SF = 1.9×10-7 4
     
    44.63 9  2+       44.63 10 
  100
E2
     0
0+
   147.45 9  4+      102.82 2 
  100
[E2]
    44.63
2+
   305.80 10  6+      158.35 2 
  100
E2
   147.45
4+
   515.70 22  8+      209.9 2 
  100
E2
   305.80
6+
   773.5 3  10+      257.8 2 
  100
[E2]
   515.70
8+
  1074.3 4  12+      300.8 2 
  100
[E2]
   773.5
10+
  1413.6 4  14+      339.3 2 
  100
[E2]
  1074.3
12+
  1786.0 5  16+      372.4 3 
  100
[E2]
  1413.6
14+
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=0- octupole vibrational band. Assignment based on
   698.31 12  1-        
   758.02 17  3-      610.8 3 
   713.3 2 
   58 11 
  100 17 
[E1]
[E1]
   147.45
    44.63
4+
2+
   866.00 15  5-      560.3 2 
   718.6 2 
   43 8 
  100 16 
[E1]
[E1]
   305.80
   147.45
6+
4+
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Kπ=0- (π, 5/2[523])(π, 5/2[642]), from SYST with 240Pu
  1311.51 23  (0-)        
  1340.82 19  (2-)      582.8 2 
   642.5 2 
  100 15 
   53 9 


   758.02
   698.31
3-
1-

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    44.63 2+       44.63 10 E2741α=741 13, α(L)=538 10, α(M)=150.1 27, α(N)=41.2 7, α(O)=9.69 17, α(P)=1.515 27, α(Q)=0.00326 6
   147.45 4+      102.82 2 [E2]13.87α=13.87 19, α(L)=10.06 14, α(M)=2.82 4, α(N)=0.775 11, α(O)=0.1826 26, α(P)=0.0291 4, α(Q)=0.0001055 15
   305.80 6+      158.35 2 E22.139α=2.139 30, α(K)=0.1927 27, α(L)=1.413 20, α(M)=0.394 6, α(N)=0.1084 15, α(O)=0.0256 4, α(P)=0.00414 6, α(Q)=2.465×10-5 35
   515.70 8+      209.9 2 E20.714α=0.714 10, α(K)=0.1402 20, α(L)=0.417 6, α(M)=0.1157 17, α(N)=0.0318 5, α(O)=0.00753 11, α(P)=0.001235 18, α(Q)=1.096×10-5 16
   698.31 1-      653.68 12 [E1]0.00865α=0.00865 12, α(K)=0.00699 10, α(L)=0.001254 18, α(M)=0.000300 4, α(N)=8.12×10-5 11, α(O)=2.004E-5 28, α(P)=3.72E-6 5, α(Q)=2.229E-7 31
1-      698.3 2 [E1]0.00766α=0.00766 11, α(K)=0.00620 9, α(L)=0.001104 15, α(M)=0.000264 4, α(N)=7.15×10-5 10, α(O)=1.765E-5 25, α(P)=3.28E-6 5, α(Q)=1.985E-7 28
   758.02 3-      610.8 3 [E1]0.00982α=0.00982 14, α(K)=0.00792 11, α(L)=0.001431 20, α(M)=0.000343 5, α(N)=9.28×10-5 13, α(O)=2.289E-5 32, α(P)=4.24E-6 6, α(Q)=2.516E-7 35
3-      713.3 2 [E1]0.00737α=0.00737 10, α(K)=0.00597 8, α(L)=0.001060 15, α(M)=0.000254 4, α(N)=6.86×10-5 10, α(O)=1.694E-5 24, α(P)=3.15E-6 4, α(Q)=1.912E-7 27
   773.5 10+      257.8 2 [E2]0.346α=0.346 5, α(K)=0.1006 14, α(L)=0.1785 26, α(M)=0.0492 7, α(N)=0.01350 19, α(O)=0.00321 5, α(P)=0.000532 8, α(Q)=6.41×10-6 9
   866.00 5-      560.3 2 [E1]0.01156α=0.01156 16, α(K)=0.00931 13, α(L)=0.001699 24, α(M)=0.000408 6, α(N)=0.0001103 15, α(O)=2.72×10-5 4, α(P)=5.02E-6 7, α(Q)=2.94E-7 4
5-      718.6 2 [E1]0.00727α=0.00727 10, α(K)=0.00589 8, α(L)=0.001045 15, α(M)=0.0002502 35, α(N)=6.77×10-5 9, α(O)=1.671E-5 23, α(P)=3.11E-6 4, α(Q)=1.888E-7 26
  1074.3 12+      300.8 2 [E2]0.2097α=0.2097 30, α(K)=0.0769 11, α(L)=0.0970 14, α(M)=0.0265 4, α(N)=0.00729 10, α(O)=0.001735 25, α(P)=0.000291 4, α(Q)=4.39×10-6 6
  1185.45 5- 1.2 µs 3 
% IT = 100
   319.50 11 M1(+E2)0.6α=0.6 4, α(K)=0.4 4, α(L)=0.12 4, α(M)=0.030 9, α(N)=0.0081 23, α(O)=0.0020 6, α(P)=3.6×10-4 13, α(Q)=1.8E-5 14
5- 1.2 µs 3 
% IT = 100
   879.7 2 [E1]0.00506B(E1)(W.u.)=9.0E-11 26, α=0.00506 7, α(K)=0.00412 6, α(L)=0.000717 10, α(M)=0.0001712 24, α(N)=4.63E-5 6, α(O)=1.145E-5 16, α(P)=2.144E-6 30, α(Q)=1.334E-7 19
5- 1.2 µs 3 
% IT = 100
  1037.8 2 [E1]0.00380B(E1)(W.u.)=2.9E-11 9, α=0.00380 5, α(K)=0.00309 4, α(L)=0.000532 7, α(M)=0.0001268 18, α(N)=3.43E-5 5, α(O)=8.50E-6 12, α(P)=1.596E-6 22, α(Q)=1.010E-7 14
  1413.6 14+      339.3 2 [E2]0.1459α=0.1459 21, α(K)=0.0620 9, α(L)=0.0614 9, α(M)=0.01670 24, α(N)=0.00458 6, α(O)=0.001094 16, α(P)=0.0001850 26, α(Q)=3.31×10-6 5
  1786.0 16+      372.4 3 [E2]0.1120α=0.1120 16, α(K)=0.0524 7, α(L)=0.0437 6, α(M)=0.01181 17, α(N)=0.00324 5, α(O)=0.000774 11, α(P)=0.0001319 19, α(Q)=2.68×10-6 4

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     00+ 2.858 y 8 
% α = 100
% SF = 1.9×10-7 4
236Pu decay by 28Mg emission observed by 1995Hu21 (15 tracks), 1990Og01 (two 28Mg tracks). Partial T1/2=1.06×1014 y 28 (1995Hu21), ≈1.5×1014 y (1990Og01). T1/2(28Mg, Calculated)= 4.12×1013 y (Cluster model,1994Bu07), 2.52×1012 y (Effective liquid drop model, 1993Go18).
E(level): 236Pu decay by 28Mg emission observed by 1995Hu21 (15 tracks), 1990Og01 (two 28Mg tracks). Partial T1/2=1.06×1014 y 28 (1995Hu21), ≈1.5×1014 y (1990Og01). T1/2(28Mg, Calculated)= 4.12×1013 y (Cluster model,1994Bu07), 2.52×1012 y (Effective liquid drop model, 1993Go18). Kπ=0+ g.s. rotational band. Band assignment.
    44.632+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
   147.454+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
   305.806+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
   515.708+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
   698.311-   E(level): Kπ=0- octupole vibrational band. Assignment based on.
   758.023-   E(level): Kπ=0- octupole vibrational band. Assignment based on.
   773.510+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
   866.005-   E(level): Kπ=0- octupole vibrational band. Assignment based on.
  1074.312+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
  1311.51(0-)   E(level): Kπ=0- (π, 5/2[523])(π, 5/2[642]), from SYST with 240Pu.
  1340.82(2-)   E(level): Kπ=0- (π, 5/2[523])(π, 5/2[642]), from SYST with 240Pu.
  1413.614+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
  1786.016+   E(level): Kπ=0+ g.s. rotational band. Band assignment.
     3E+3(0+) 37 ps 4 
% SF ≤ 100
Q(intrinsic)=37 b +14-8 (1977Me08).
E(level): Q(intrinsic)=37 b +14-8 (1977Me08).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   305.80   158.35M(γ): from 235U(α,3nγ).
   515.70   209.9E(γ): From 235U(α,3nγ)
I(γ): From 235U(α,3nγ)
M(γ): from 235U(α,3nγ).
   698.31   653.68E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
   698.3E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
   758.02   610.8E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
   713.3E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
   773.5   257.8E(γ): From 235U(α,3nγ)
I(γ): From 235U(α,3nγ)
   866.00   560.3E(γ): From 236Am ε decay (3.6 min)
I(γ): From 236Am ε decay (3.6 min)
   718.6E(γ): From 236Am ε decay (3.6 min)
I(γ): From 236Am ε decay (3.6 min)
  1074.3   300.8E(γ): From 235U(α,3nγ)
I(γ): From 235U(α,3nγ)
  1185.45   319.50E(γ): From 236Am ε decay (3.6 min)
I(γ): From 236Am ε decay (3.6 min)
M(γ): from 236Am ε decay (3.6 min)
   879.7E(γ): From 236Am ε decay (3.6 min)
I(γ): From 236Am ε decay (3.6 min)
  1037.8E(γ): From 236Am ε decay (3.6 min)
I(γ): From 236Am ε decay (3.6 min)
  1311.51   613.2E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
  1340.82   582.8E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
   642.5E(γ): From 236Am ε decay (2.9 min)
I(γ): From 236Am ε decay (2.9 min)
  1413.6   339.3E(γ): From 235U(α,3nγ)
I(γ): From 235U(α,3nγ)
  1786.0   372.4E(γ): From 235U(α,3nγ)
I(γ): From 235U(α,3nγ)
  2615.7   427.7E(γ): From 237Np(209Bi,210Pbγ).
I(γ): From 237Np(209Bi,210Pbγ).
  3063.7   448.0E(γ): From 237Np(209Bi,210Pbγ).
I(γ): From 237Np(209Bi,210Pbγ).
  3529.6   465.9E(γ): From 237Np(209Bi,210Pbγ).
I(γ): From 237Np(209Bi,210Pbγ).

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