ADOPTED LEVELS, GAMMAS for 196Po

Author: Huang Xiaolong |  Citation: Nucl. Data Sheets 108, 1093 (2007) |  Cutoff date: 1-Jan-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-9.57×103 keV 4S(n)= 1.049×104 keV 4S(p)= 2746 keV 14Q(α)= 6658.0 keV 25
Reference: 2012WA38

References:
  A  (HI,xnγ)  B  196Po IT decay (856 NS)
  C  200Rn α decay (0.96 S) 

General Comments:

Data for the excited states are from 160Dy(40Ar,4nγ) study (1991Al15). Data for ground state are from its α decay.

Δ<r2>, monopole strength are available, see 1989De18.

Nuclear structure calculations: 1977Ma14, 1988Sa37, 1991Sa12, 1997Ci07.

Cross section and yield measurements: 1982LeZN, 1982Si11, 1984Da14.

α-decay calculation: 1979Po23, 1988Hu03.

Q-value: Note: Current evaluation has used the following Q record










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABC 0+ 5.8 s 2 
% ε ≈ 2
% α ≈ 98
     
   463.12 9 ABC 2+     463.09 9 
  100
E2
     0.0
0+
   558 7   C 0+        
   859.05 11 AB  2+ < 12 ns   395.82 12 
  859.2 2 
   64 2 
  100 3 
[M1+E2]
E2
   463.12
     0.0
2+
0+
   890.99 12 AB  4+     427.89 9 
  100 2 
E2
   463.12
2+
  1387.75 13 AB  4+     496.74 10 
  528.61 11 
  925.4
  100 2 
   82 3 
 
[M1+E2]
E2

   890.99
   859.05
   463.12
4+
2+
2+
  1390.10 15 AB  6+     499.11 10 
  100
E2
   890.99
4+
  1525.1 5 AB      669.5
  100

   859.05
2+
  1802.04 15 AB  5-     277.8 5 
  414.24 8 
  911.5 3 
   25 7 
  100 2 
   45 1 

E1
[E1]
  1525.1
  1387.75
   890.99

4+
4+
  1907.3 4 AB      516.1
  517.6 4 
 
  100 33 


  1387.75
  1390.10
4+
6+
  1940.34 19 AB  8+     550.29 11 
  100
E2
  1390.10
6+
  1974.25 23 A   8+     583.9 2 
  100
E2
  1390.10
6+
  2039.32 17 AB  7-     133.8
  237.28 9 
  649
 
  100
 

E2

  1907.3
  1802.04
  1390.10

5-
6+
  2292.75 20 AB  9-     253.45 10 
  100
E2
  2039.32
7-
  2304.5 9 AB      265
  100

  2039.32
7-
  2493.9 4 AB  11- 856 ns 17    198
  552
 
  100

E3
  2292.75
  1940.34
9-
8+
  2591.39 24 A   10+     616.9 2 
  651.3 2 
  100 2 
   16 2 
E2

  1974.25
  1940.34
8+
8+
  2650.6 9 A       346
  358
 
 


  2304.5
  2292.75

9-
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2778.50 22 A   (10+)     283.8 4 
  485.79 10 
   79 21 
  100 2 

(E1)
  2493.9
  2292.75
11-
9-
  2979.0 3 A   11(-)     387.64 12 
  100
(E1)
  2591.39
10+
  3083.6 13 A       433
  100

  2650.6

  3343.8 3 A   (12+)     565.3 2 
  100
E2
  2778.50
(10+)
  3609.6 17 A       526
  100

  3083.6

  3646.7 4 A   13(-)     667.7 2 
  100
E2
  2979.0
11(-)

E(level): From least-squares fit to Eγ’s.

Jπ(level): From γγ(θ) of oriented nuclei in (HI,xnγ) (1995Be31), except as noted.

T1/2(level): From time-difference spectra.

E(γ): From (HI,xnγ) (1995Be31,1999Ta03)

I(γ): Relative branching intensity from each level in (HI,xnγ).

M(γ): From DCO ratios and approximate values of total conversion coefficients.

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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+ GROUND-STATE band.
     0.0 0+ 5.8 s 2 
% ε ≈ 2
% α ≈ 98
     
   463.12 9  2+     463.09 9 
  100
E2
     0.0
0+
   890.99 12  4+        
  1390.10 15  6+     499.11 10 
  100
E2
   890.99
4+
  1940.34 19  8+     550.29 11 
  100
E2
  1390.10
6+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - NEGATIVE-PARITY COLLECTIVE ROTATIONAL band
  1802.04 15  5-        
  2039.32 17  7-     133.8
  237.28 9 
  649
 
  100
 

E2

  1907.3
  1802.04
  1390.10

5-
6+
  2292.75 20  9-        
  2493.9 4  11- 856 ns 17    198
  552
 
  100

E3
  2292.75
  1940.34
9-
8+

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   463.12 2+     463.09 9 E20.0387α=0.0387, α(K)=0.0260 4, α(L)=0.00954 14, α(M)=0.00241 4, α(N+)=0.000756 11
   859.05 2+ < 12 ns   395.82 12 [M1+E2]0.15B(E2)(W.u.)>0.0066, B(M1)(W.u.)>2.7E-6, α=0.15 9, α(K)=0.11 8, α(L)=0.025 9, α(M)=0.0060 19, α(N+)=0.0019 7
2+ < 12 ns   859.2 2 E20.0099B(E2)(W.u.)>0.00085, α=0.0099 1, α(K)=0.00769 11, α(L)=0.001685 24, α(M)=0.000408 6, α(N+)=0.0001289 18
   890.99 4+     427.89 9 E20.0472α=0.0472, α(K)=0.0307 5, α(L)=0.01236 18, α(M)=0.00314 5, α(N+)=0.000983 14
  1387.75 4+     496.74 10 [M1+E2]0.08α=0.08 5, α(K)=0.06 5, α(L)=0.013 6, α(M)=0.0031 12, α(N+)=0.0010 4
4+     528.61 11 E20.0282α=0.0282, α(K)=0.0198 3, α(L)=0.00631 9, α(M)=0.001579 23, α(N+)=0.000496 7
  1390.10 6+     499.11 10 E20.0323α=0.0323, α(K)=0.0223 4, α(L)=0.00755 11, α(M)=0.00190 3, α(N+)=0.000595 9
  1802.04 5-     414.24 8 E10.0152α=0.0152 8, α(K)=0.01254 18, α(L)=0.00210 3, α(M)=0.000492 7, α(N+)=0.0001547 22
5-     911.5 3 [E1]0.00321α=0.00321, α(K)=0.00267 4, α(L)=0.000417 6, α(M)=9.68×10-5 14, α(N+)=3.06E-5 5
  1940.34 8+     550.29 11 E20.0256α=0.0256, α(K)=0.0182 3, α(L)=0.00559 8, α(M)=0.001395 20, α(N+)=0.000438 7
  1974.25 8+     583.9 2 E20.0225α=0.0225, α(K)=0.01622 23, α(L)=0.00471 7, α(M)=0.001171 17, α(N+)=0.000368 6
  2039.32 7-     237.28 9 E20.263α=0.263, α(K)=0.1138 16, α(L)=0.1110 16, α(M)=0.0292 5, α(N+)=0.00906 13
  2292.75 9-     253.45 10 E20.212α=0.212, α(K)=0.0978 15, α(L)=0.0847 13, α(M)=0.0222 4, α(N+)=0.00690 11
  2493.9 11- 856 ns 17    552E30.0809B(E3)(W.u.)=37 4, α=0.0809, α(K)=0.0444 7, α(L)=0.0272 4, α(M)=0.00710 10, α(N+)=0.00223 4
  2591.39 10+     616.9 2 E20.0198α=0.0198, α(K)=0.01452 21, α(L)=0.00402 6, α(M)=0.000994 14, α(N+)=0.000313 5
  2778.50 (10+)     485.79 10 (E1)0.0109α=0.0109, α(K)=0.00897 13, α(L)=0.001477 21, α(M)=0.000345 5, α(N+)=0.0001088 16
  2979.0 11(-)     387.64 12 (E1)0.0176α=0.0176, α(K)=0.01440 21, α(L)=0.00243 4, α(M)=0.000569 9, α(N+)=0.000179 3
  3343.8 (12+)     565.3 2 E20.0241α=0.0241, α(K)=0.01726 25, α(L)=0.00516 8, α(M)=0.001286 18, α(N+)=0.000404 6
  3646.7 13(-)     667.7 2 E20.0170α=0.0170, α(K)=0.01243 18, α(L)=0.00322 5, α(M)=0.000794 12, α(N+)=0.000250 4

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 5.8 s 2 
% ε ≈ 2
% α ≈ 98
From systematics of β-strength function (1973Ta30). Other: %α=94 5, α reduced width: 73 keV 5, Eα=6521 keV 5 (1993Wa04).
E(level): From systematics of β-strength function (1973Ta30). Other: %α=94 5, α reduced width: 73 keV 5, Eα=6521 keV 5 (1993Wa04). Kπ=0+ GROUND-STATE band.
   463.122+   E(level): Kπ=0+ GROUND-STATE band.
   890.994+   E(level): Kπ=0+ GROUND-STATE band.
  1390.106+   E(level): Kπ=0+ GROUND-STATE band.
  1802.045-   E(level): NEGATIVE-PARITY COLLECTIVE ROTATIONAL band.
  1940.348+   E(level): Kπ=0+ GROUND-STATE band.
  2039.327-   E(level): NEGATIVE-PARITY COLLECTIVE ROTATIONAL band.
  2292.759-   E(level): NEGATIVE-PARITY COLLECTIVE ROTATIONAL band.
  2493.911- 856 ns 17  E(level): NEGATIVE-PARITY COLLECTIVE ROTATIONAL band.

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