ADOPTED LEVELS, GAMMAS for 208Rn

Author: M. J. Martin |  Citation: Nucl. Data Sheets 108,1583 (2007) |  Cutoff date: 1-Jun-2007 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-6989 keV 16S(n)= 9092 keV 14S(p)= 3717 keV 17Q(α)= 6260.7 keV 17
Reference: 2012WA38

References:
  A  212Ra α decay  B  208Fr ε decay
  C  196Pt(16O,4nγ)  D  200Hg(12C,4nγ)








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABC  0+ 24.35 m 14 
% ε = 38 7
% α = 62 7
     
   635.8 2 ABC  2+     635.8 2 
  100
E2
     0.0
0+
  1188.9 2  BC  4+     553.1 1 
  100
E2
   635.8
2+
  1414.3 2  BC  4+     225.5 2 
  778.5 1 
    2.3 5 
  100.0 16 
M1
E2
  1188.9
   635.8
4+
2+
  1578.0 4  BC  (4,5,6)+     163.7 5 
  389.2 5 
   92 38 
  100 46 
[M1,E2]
E2
  1414.3
  1188.9
4+
4+
  1658.6 3  BC  4+,5+     469.7 1 
  100
M1
  1188.9
4+
  1739.6 3  BC  6+      81.0
  161.6 3 
  325.3 1 
    0.9 7 
    5.4 11 
  100 5 

[M1,E2]
E2
  1658.6
  1578.0
  1414.3
4+,5+
(4,5,6)+
4+
  1825.2 3  B   6+     636.3 2 
  100
E2
  1188.9
4+
  1828.3 4  BCD 8+ 487 ns 12     88.9 1 
  100
E2
  1739.6
6+
  1905.7 3  B   6+     716.8 1 
  100

  1188.9
4+
  2128.8 5  B   6+,7+     389.3 3 
  100
M1
  1739.6
6+
  2163.3 6  B   7+,8+     335.0 3 
  100
M1
  1828.3
8+
  2163.4 5   C  10+     335.1 1 
  100
E2
  1828.3
8+
  2179.0 3  B   (5-,6+)     990.1 1 
  100

  1188.9
4+
  2319.4 4   C  9-     491.1 1 
  100
E1
  1828.3
8+
  2320.3 4  B   6+,7+,8+     491.9 1 
  100
E2
  1828.3
8+
  2330.3 3  B   (5-,6,7+)     671.6 1 
  100

  1658.6
4+,5+
  2356.8 3  B   (5-,6+)     942.5 1 
  100

  1414.3
4+
  2459.1 4  B   6+,7+,8+     719.6 1 
  100
E2
  1739.6
6+
  2465.1 4   C  10+     636.7 2 
  100
E2
  1828.3
8+
  2546.0 3  B   (6,7+)     887.3 1 
  100

  1658.6
4+,5+
  2618.1 4   CD 10- 11.8 ns 7    153.0 1 
  298.7 1 
  789.7 1 
    3.9 11 
   19.4 11 
  100 3 
[E1]
M1
M2
  2465.1
  2319.4
  1828.3
10+
9-
8+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2619.0 4  B   6+,7+,8+     298.7 1 
  100
M1+E2
  2320.3
6+,7+,8+
  2621.2 4   C  11- 3.5 ns 7      3.1
  156.1 2 
 
 

E1
  2618.1
  2465.1
10-
10+
  2797.4 4   C  12+     332.3 1 
  634.0 3 
   96 15 
  100 26 
(E2)
E2
  2465.1
  2163.4
10+
10+
  2935.2 5 ?  C  13     137.8 3 ?
  100
D
  2797.4
12+
  2954.5 4   C  13     157.1 2 
  100
D
  2797.4
12+
  3080.8 6 ?  C  14     145.6 3 ?
  100

  2935.2
13
  3110.8 4   C  12+     645.7 1 
  100
E2
  2465.1
10+
  3198.3 4   C  12-     577.2 1 
  100
M1+E2
  2621.2
11-
  3389.3 4   C  13-     191.0 1 
  768.2 2 
   12.5 20 
  100 5 
D
E2
  3198.3
  2621.2
12-
11-
  3413.1 6   C  (15)     332.3 1 
  100
(M1)
  3080.8
14
  3469.0 4   C  14+ 3.5 ns 14    358.2 2 
  100
E2
  3110.8
12+
  3520.7 4   C  13-     322.4 1 
  899.5 1 
  100 5 
   83 5 
M1
E2
  3198.3
  2621.2
12-
11-
  3779.1 4   C  14-     258.4 1 
  389.7 2 
  100 4 
   71 5 
D
M1
  3520.7
  3389.3
13-
13-
  3851.7 6 ?  C  16     438.6 1 
  100
D
  3413.1
(15)
  3925.2 4   C  15-     146.2 3 
  456.2 1 
  535.8 1 
   30 10 
   76 7 
  100 7 
M1
D
E2
  3779.1
  3469.0
  3389.3
14-
14+
13-
  4066.4 5   C  16- 18.3 ns 4    141.2 2 
  100
M1
  3925.2
15-
  4524.6 5   C  16(+)     745.5 2 
  100
Q
  3779.1
14-
  4832.6 5   C  18-     766.2 2 
  100
E2
  4066.4
16-
  5178.3 5   C  19-     345.7 2 
  100
M1
  4832.6
18-
  5377.0 5   C  19     544.4 2 
  100
D
  4832.6
18-
  5930.6 6   C  21(-)     752.3 2 
  100
Q
  5178.3
19-

E(level): From a least-squares fit to the adopted Eγ

Jπ(level): γ(θ) conclusions are from data in 196Pt(16O,4nγ)

E(γ): From 208Fr ε decay and 196Pt(16O,4nγ).

I(γ): Relative photon branching from each level. Data are from 208Fr ε decay and 196Pt(16O,4nγ)

M(γ): From α(K) and α data in ε decay and (16O,4nγ)

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Additional Gamma Data:















E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
   635.8 2+     635.8 2 E2 0.0206α=0.0206
  1188.9 4+     553.1 1 E2 0.0280α=0.0280
  1414.3 4+     225.5 2 M1 1.38α=1.38
4+     778.5 1 E2 0.0135α=0.0135
  1578.0 (4,5,6)+     163.7 5 [M1,E2] 2.3α=2.3 11
(4,5,6)+     389.2 5 E2 0.067α=0.067
  1658.6 4+,5+     469.7 1 M1 0.187α=0.187
  1739.6 6+     161.6 3 [M1,E2] 2.4α=2.4 12
6+     325.3 1 E2 0.110α=0.110
  1825.2 6+     636.3 2 E2 0.0205α=0.0205
  1828.3 8+ 487 ns 12     88.9 1 E2 14.3B(E2)(W.u.)=0.187 7, α=14.3
  2128.8 6+,7+     389.3 3 M1 0.308α=0.308
  2163.3 7+,8+     335.0 3 M1 0.464α=0.464
  2319.4 9-     491.1 1 E1 0.0115α=0.0115
  2320.3 6+,7+,8+     491.9 1 E2 0.037α=0.037
  2459.1 6+,7+,8+     719.6 1 E2 0.0158α=0.0158
  2465.1 10+     636.7 2 E2 0.0205α=0.0205
  2618.1 10- 11.8 ns 7    153.0 1 [E1] 0.167B(E1)(W.u.)=1.2E-7 4, α=0.167
10- 11.8 ns 7    298.7 1 M1 0.635B(M1)(W.u.)=9.2×10-6 8, α=0.635
10- 11.8 ns 7    789.7 1 M2 0.116B(M2)(W.u.)=0.165 10, α=0.116
  2619.0 6+,7+,8+     298.7 1 M1+E21.0 10.39α=0.39 3
  2621.2 11- 3.5 ns 7    156.1 2 E1 0.159B(E1)(W.u.)≈1.4E-6, α=0.159
  2797.4 12+     332.3 1 (E2) 0.104α=0.104
12+     634.0 3 E2 0.0207α=0.0207
  3110.8 12+     645.7 1 E2 0.0199α=0.0199
E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
  3198.3 12-     577.2 1 M1+E20.7 LT0.097α=0.097 13
  3389.3 13-     768.2 2 E2 0.0139α=0.0139
  3413.1 (15)     332.3 1 (M1) 0.474α=0.474
  3469.0 14+ 3.5 ns 14    358.2 2 E2 0.084B(E2)(W.u.)=0.35 17, α=0.084
  3520.7 13-     322.4 1 M1 0.515α=0.515
13-     899.5 1 E2 0.0101α=0.0101
  3779.1 14-     258.4 1 D 0.947α=0.947
14-     389.7 2 M1 0.308α=0.308
  3925.2 15-     146.2 3 M1 4.68α=4.68
15-     535.8 1 E2 0.0302α=0.0302
  4066.4 16- 18.3 ns 4    141.2 2 M1 5.17B(M1)(W.u.)=6.9×10-5 3, α=5.17
  4832.6 18-     766.2 2 E2 0.0139α=0.0139
  5178.3 19-     345.7 2 M1 0.426α=0.426

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 24.35 m 14 
% ε = 38 7
% α = 62 7
%α: average of values of 1971Go35 (0.69 4) and 1971Ho01 (0.55 6) based on Iα(208At)=0.55 6. These authors’ original values are 0.67 3 and 0.52 5, respectively, based on Iα(208At)=0.5.
E(level): %α: average of values of 1971Go35 (0.69 4) and 1971Ho01 (0.55 6) based on Iα(208At)=0.55 6. These authors’ original values are 0.67 3 and 0.52 5, respectively, based on Iα(208At)=0.5.
  2619.06+,7+,8+   M1+E2 γ to π=+. log ft=7.7 from 7+.
  2935.213   E(level): The order of the 138, 146, 332 and 439 γ’s has not been established and thus the levels at 2935, 3081, 3413 and 3852 are not uniquely established.
  3080.814   E(level): The order of the 138, 146, 332 and 439 γ’s has not been established and thus the levels at 2935, 3081, 3413 and 3852 are not uniquely established.
  3851.716   E(level): The order of the 138, 146, 332 and 439 γ’s has not been established and thus the levels at 2935, 3081, 3413 and 3852 are not uniquely established.

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1414.3   225.5I(γ): from (16O,4nγ). Iγ=1.12 17 in ε decay. Note, however, that Iγ from coin is ≈2 times that in singles and thus agrees well with in-beam value (see table V in 1981Ri02).
  1739.6    81.0E(γ): from E(level) difference. Transition not observed but existence inferred from observed 89γ-470γ coincidences
I(γ): from I(γ+ce), Iγ=1.2 4 if M1 and 0.31 9 if E2
  2621.2     3.1E(γ): from energy level difference. Not observed. Existence inferred from coincidence data in (16O,4nγ)
M(γ): from decay scheme, multipolarity=M1 or E2. Note that B(M1)(W.u.)≈0.039, B(E2)(W.u.)≈490 for I(γ+ce)(3.1γ)≈89% and α=4.8×103 (M1), 1.4×107 (E2) (from 1978Ro21)

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