ADOPTED LEVELS, GAMMAS for 218Rn

Authors: Balraj Singh, M.S. Basunia, Murray Martin Et Al., |  Citation: Nucl. Data Sheets 160, 405 (2019) |  Cutoff date: 30-Oct-2019 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1842 keV 5S(n)= 6512 keV 4S(p)= 6466 keV 5Q(α)= 7262.5 keV 19
Reference: 2017WA10

References:
  A  222Ra α decay (33.6 S)  B  232Th(136Xe,xγ)

General Comments:

Isotopic assignment: 1948St42

2019An10: measured mass excess=5089 keV 54 as compared to 5217.2 keV 23 in 2017Wa10. Note that negative sign in 2019An10 is a misprint.

Theory references: consult NSR database (www.nndc.bnl.gov/nsr/) for 42 primary references for calculations of half-lives of radioactive decay modes, and 20 for nuclear structure

Q-value: S(2n)=11178 6, S(2p)=11143.0 27 (2017Wa10)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB 0+ 33.75 ms 15 
% α = 100
     
   324.320 18 AB 2+ < 80 ps   324.31 2 
  100
E2
     0.0
0+
   653.18 18 AB (4+)     328.9 2 
  100
[E2]
   324.320
2+
   796.911 21 A  (3-)     144.4 5 
  472.59 1 
    2.8 5 
  100 3 
[E1]
(E1)
   653.18
   324.320
(4+)
2+
   840.172 18 AB (3-)     515.83 3 
  840.18 2 
   51 3 
  100 4 

[E3]
   324.320
     0.0
2+
0+
  1014.3 3  B (6+)     361.1 2 
  100

   653.18
(4+)
  1026.1 4  B (5-)     186.3 5 ?
  372.7 5 
 
 


   840.172
   653.18
(3-)
(4+)
  1327.9 4  B (7-)     302.0 5 
  313.4 5 
  100 15 
   52 12 


  1026.1
  1014.3
(5-)
(6+)
  1392.9 4  B (8+)     378.6 2 
  100

  1014.3
(6+)
  1694.3 5  B (9-)     301.4 5 ?
  366.4 5 
 
 


  1392.9
  1327.9
(8+)
(7-)
  1775.2 4  B (10+)     382.3 2 
  100

  1392.9
(8+)
  2070.9 7  B (11-)     376.6 5 
  100

  1694.3
(9-)
  2168.9 7  B (12+)     393.7 5 
  100

  1775.2
(10+)
  2457.9 9  B (13-)     387.0 5 
  100

  2070.9
(11-)
  2576.6 8  B (14+)     407.7 5 
  100

  2168.9
(12+)
  2853.0 10 ? B (15-)     395.1 5 ?
 

  2457.9
(13-)
  3002.0 10  B (16+)     425.4 5 
  100

  2576.6
(14+)
  3265.2 11 ? B (17-)     412.2 5 ?
 

  2853.0
(15-)
  3437.5 11  B (18+)     435.5 5 
  100

  3002.0
(16+)
  3683.2 13 ? B (19-)     418.0 5 ?
 

  3265.2
(17-)
  3859.4 12  B (20+)     421.9 5 
  100

  3437.5
(18+)
  4287.0 13  B (22+)     427.6 5 
  100

  3859.4
(20+)
  4725.0 14  B (24+)     438.0 5 
  100

  4287.0
(22+)
  5167.8 15 ? B (26+)     442.8 5 ?
 

  4725.0
(24+)

E(level): From a least-squares fit to Eγ, by evaluators.

Jπ(level): From probable band assignments (g.s. band and an octupole band) for levels above the first 2+ state

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - g.s. band.
     0.0 0+ 33.75 ms 15 
% α = 100
     
   324.320 18  2+ < 80 ps   324.31 2 
  100
E2
     0.0
0+
   653.18 18  (4+)     328.9 2 
  100
[E2]
   324.320
2+
  1014.3 3  (6+)     361.1 2 
  100

   653.18
(4+)
  1392.9 4  (8+)     378.6 2 
  100

  1014.3
(6+)
  1775.2 4  (10+)     382.3 2 
  100

  1392.9
(8+)
  2168.9 7  (12+)     393.7 5 
  100

  1775.2
(10+)
  2576.6 8  (14+)     407.7 5 
  100

  2168.9
(12+)
  3002.0 10  (16+)     425.4 5 
  100

  2576.6
(14+)
  3437.5 11  (18+)     435.5 5 
  100

  3002.0
(16+)
  3859.4 12  (20+)     421.9 5 
  100

  3437.5
(18+)
  4287.0 13  (22+)     427.6 5 
  100

  3859.4
(20+)
  4725.0 14  (24+)     438.0 5 
  100

  4287.0
(22+)
  5167.8 15  (26+)     442.8 5 ?
 

  4725.0
(24+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Octupole band.
   840.172 18  (3-)        
  1026.1 4  (5-)     186.3 5 ?
  372.7 5 
 
 


   840.172
   653.18
(3-)
(4+)
  1327.9 4  (7-)     302.0 5 
  313.4 5 
  100 15 
   52 12 


  1026.1
  1014.3
(5-)
(6+)
  1694.3 5  (9-)     301.4 5 ?
  366.4 5 
 
 


  1392.9
  1327.9
(8+)
(7-)
  2070.9 7  (11-)     376.6 5 
  100

  1694.3
(9-)
  2457.9 9  (13-)     387.0 5 
  100

  2070.9
(11-)
  2853.0 10  (15-)     395.1 5 ?
 

  2457.9
(13-)
  3265.2 11  (17-)     412.2 5 ?
 

  2853.0
(15-)
  3683.2 13  (19-)     418.0 5 ?
 

  3265.2
(17-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   324.320 2+ < 80 ps   324.31 2 E20.1097B(E2)(W.u.)>23, α=0.1097
   653.18 (4+)     328.9 2 [E2]0.1053α=0.1053
   796.911 (3-)     144.4 5 [E1]0.190α=0.190 4

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 33.75 ms 15 
% α = 100
Evaluated charge radius relative to 212Rn: δ|4r2|5(218Rn,212Rn)=+0.7000 fm2 3 (2013An02).
E(level): g.s. band.
   324.3202+ < 80 ps E(level): g.s. band.
   653.18(4+)   E(level): g.s. band.
   840.172(3-)   E(level): Octupole band.
  1014.3(6+)   E(level): g.s. band.
  1026.1(5-)   E(level): Octupole band.
  1327.9(7-)   E(level): Octupole band.
  1392.9(8+)   E(level): g.s. band.
  1694.3(9-)   E(level): Octupole band.
  1775.2(10+)   E(level): g.s. band.
  2070.9(11-)   E(level): Octupole band.
  2168.9(12+)   E(level): g.s. band.
  2457.9(13-)   E(level): Octupole band.
  2576.6(14+)   E(level): g.s. band.
  2853.0(15-)   E(level): Octupole band.
  3002.0(16+)   E(level): g.s. band.
  3265.2(17-)   E(level): Octupole band.
  3437.5(18+)   E(level): g.s. band.
  3683.2(19-)   E(level): Octupole band.
  3859.4(20+)   E(level): g.s. band.
  4287.0(22+)   E(level): g.s. band.
  4725.0(24+)   E(level): g.s. band.
  5167.8(26+)   E(level): g.s. band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   324.320   324.31E(γ): From 222Rn α decay
M(γ): from ce data in 222Ra α decay
   653.18   328.9E(γ): From 222Rn α decay
   796.911   144.4E(γ): From 222Rn α decay only
I(γ): From 222Rn α decay only
   472.59E(γ): From 222Rn α decay only
I(γ): From 222Rn α decay only
M(γ): from ce data in 222Ra α decay
   840.172   515.83E(γ): From 222Rn α decay only
I(γ): From 222Rn α decay only
   840.18E(γ): From 222Rn α decay only
I(γ): From 222Rn α decay only

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