ADOPTED LEVELS, GAMMAS for 212Pb

Authors: K. Auranen and E.A. Mccutchan |  Citation: Nucl. Data Sheets 168, 117 (2020) |  Cutoff date: 1-Aug-2020 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=569.1 keV 18S(n)= 5127.2 keV 25S(p)= 8760 keV 40Q(α)= 3290 keV 30
Reference: 2017WA10

References:
  A  212Tl β- decay (30.9 S)  B  216Po α decay
  C  9Be(238U,xγ)  D  210Pb(t,p)








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCD 0+ 10.622 h 7 
% β- = 100
     
   804.9 2 ABCD (2+)     804.9 2 
  100
[E2]
     0.0
0+
  1119.9 10 A CD (4+)     315
  100
[E2]
   804.9
(2+)
  1276.9 14 A CD (6+)     157
  100
[E2]
  1119.9
(4+)
  1335 10   CD (8+) 6.0 µs 8     58 10 S
  100
[E2]
  1276.9
(6+)
  1820 10    D (3-)        
  2249 10    D        
  2287 10    D        
  2488 10    D        
  2616 10    D        
  3067 10    D        
  3140 10    D        
  3174 10    D        
  3256 10    D        
  3285 10    D        
  3526 10    D        
  3716 10    D        
  3844 10    D        
  4093 10    D        

E(level): From Eγ, assuming 1 keV uncertainty when not explicity indicated, for levels below 1.3 MeV. Above 1.3 MeV, level energies are from (t,p).

Jπ(level): From 210Pb(t,p). Tentative assignments based on combined evidence of : 1) comparison of limited angular distributions to those of 208Pb(t,p), 2) comparison between measured excitation energies and those in 210Pb and 3) on relative transition strengths.

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Ground state sequence.
     0.0 0+ 10.622 h 7 
% β- = 100
     
   804.9 2  (2+)     804.9 2 
  100
[E2]
     0.0
0+
  1119.9 10  (4+)     315
  100
[E2]
   804.9
(2+)
  1276.9 14  (6+)     157
  100
[E2]
  1119.9
(4+)
  1335 10  (8+) 6.0 µs 8     58 10 S
  100
[E2]
  1276.9
(6+)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   804.9 (2+)     804.9 2 [E2]0.01027α=0.01027
  1119.9 (4+)     315[E2]0.1001α=0.1001
  1276.9 (6+)     157[E2]1.028α=1.028
  1335 (8+) 6.0 µs 8     58 10 [E2]12×101B(E2)(W.u.)=0.016 +41-10, α=12E1 8

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 10.622 h 7 
% β- = 100
RMS charge radius <r2>1/2=5.5396 fm 19 (2013An02).

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1119.9   315E(γ): other: 316 in 9Be(238U,Xγ)
  1276.9   157E(γ): other: 158 in 9Be(238U,Xγ)
  1335    58E(γ): transition to (6+) level not seen in γ-ray spectra, energy is from difference of 1335 and 1277 levels

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