ADOPTED LEVELS, GAMMAS for 90Kr

Authors: S. K. Basu, E.A. Mccutchan |  Citation: Nucl. Data Sheets 165, 1 (2020) |  Cutoff date: 1-Mar-2020 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=4405 keV 7S(n)= 6494.8 keV 28S(p)= 13974 keV 4Q(α)= -6881 keV 3
Reference: 2017WA10

References:
  A  90Br β- decay  B  248Cm SF decay
  C  252Cf SF decay  D  235U(n,Fγ)
  E  Coulomb Excitation 

General Comments:

There are a number of γ-ray transitions initially proposed to belong to 90Kr in 252Cf and 248Cm SF decay datasets, that have subsequently been assigned to 91Kr in 235U(n,Fγ). These transitions and their respective levels are not included in the Adopted Levels and Gammas. See the 252Cf and 248Cm SF decay datasets for their placements.

Q-value: S(2n)=11411 3; S(2p)=25653 4 (2017Wa10)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCDE 0+ 32.32 s 9 
% β- = 100
     
   707.12 5 ABCDE 2+ 10.7 ps 16     707.05 6 
  100
E2
     0.0
0+
  1362.25 6 ABCDE 2+ 1.1 ps +4-2     655.17 6 
  1362.32 10 
   63.5 15 
  100 8 
(M1+E2)
E2
   707.12
     0.0
2+
0+
  1763.89 15  BCD  (3,4,2)+      401.4
  1056.2
  100 4 
   24.1
E2
E2
  1362.25
   707.12
2+
2+
  1830.49 15 ABCD  4+     1123.37 15 
  100
E2
   707.12
2+
  1940.33 8 A          578.06 18 
  1233.21 8 
   14.5 16 
  100 4 


  1362.25
   707.12
2+
2+
  2103.13 8 A          740.82 8 
  1396.16 13 
  100 5 
   33 3 


  1362.25
   707.12
2+
2+
  2147.81 10 A          786.02 12 
  1440.21 12 
  100 7 
   20.2 19 


  1362.25
   707.12
2+
2+
  2193.1 4 A         1486.0 4 
  100

   707.12
2+
  2249.34 14 A   E (2+) < 0.23 ps   1542.20 13 
  2249?
  100
  <23.0

[E2]
   707.12
     0.0
2+
0+
  2318.09 7 A          955.84 8 
  1610.80 11 
  2318.6 2 
   98 5 
  100 5 
   47 4 



  1362.25
   707.12
     0.0
2+
2+
0+
  2536.04 21 A         1828.90 20 
  100

   707.12
2+
  2543.70 10 A         1836.49 10 
  2543.93 20 
  100 6 
   20 3 


   707.12
     0.0
2+
0+
  2595.93 14 A         1888.79 13 
  100

   707.12
2+
  2596.49 25  BCD       832.8
  100

  1763.89
(3,4,2)+
  2685.83 13 A         1323.57 12 
  100

  1362.25
2+
  2687.31 13 A          539.50 8 
  100

  2147.81

  2730.76 17 A         2024.1 3 
  2730.5 2 
   26 4 
  100 7 


   707.12
     0.0
2+
0+
  2747.94 15 A         2040.79 14 
  100

   707.12
2+
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2780.60 9 A          840.29 10 
  1418.34 11 
  2073.0 5 
  100 8 
   84 8 
   16 4 



  1940.33
  1362.25
   707.12

2+
2+
  2828.26 22 A         1465.9 3 
  2121.2 3 
   98 12 
  100 11 


  1362.25
   707.12
2+
2+
  2853.16 22  BCD  5     1022.7
  100
D+Q
  1830.49
4+
  2864.15 20 A         2864.1 2 
  100

     0.0
0+
  2987.32 10 A         1625.11 13 
  2987.1 2 
  100 7 
   66 5 


  1362.25
     0.0
2+
0+
  3084.86 21  BCD      1254.4
  1321.5
 
 


  1830.49
  1763.89
4+
(3,4,2)+
  3140.25 16 A         2433.09 15 
  100

   707.12
2+
  3223.5 3  BCD  (5+,6+)     1393.2
  1460.3
 
 


  1830.49
  1763.89
4+
(3,4,2)+
  3231.44 17 A          913.38 20 
  3231.3 3 
    7.6 10 
  100 10 


  2318.09
     0.0

0+
  3285.10 17 A         1344.76 15 
  100

  1940.33

  3318.4 3 A         3318.5 3 
  100

     0.0
0+
  3372.6 3 A         2665.4 3 
  100

   707.12
2+
  3508.2 3 A         2801.0 3 
  100

   707.12
2+
  3695.5 4   CD      1099.0
  100

  2596.49

  3896.53 24  BCD       672.9
   811.7
  1043.4
 
 
 



  3223.5
  3084.86
  2853.16
(5+,6+)

5
  4036.5 5  BCD       813.4
  100

  3223.5
(5+,6+)
  4099.0 10    D      1245.8
  100

  2853.16
5
  4284.9 4   CD      1200.0
  100

  3084.86

  4291.0 3 A         4290.9 3 
  100

     0.0
0+
  4546.6 5 A         2002.9 5 
  100

  2543.70

  4785.78 22 A         2682.6 2 
  100

  2103.13

E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  5004.4 3 A         4297.2 3 
  100

   707.12
2+
  5053.0 3  BCD      1156.6
  100

  3896.53

  5080.0 5 A         4372.8 5 
  100

   707.12
2+
  5385.4 6 A         4023.1 6 
  100

  1362.25
2+
  5683.3 5 A         4320.9 5 
  100

  1362.25
2+
  5730.1 3 A         2411.8 3 
  4367.3 5 
   71 12 
  100 13 


  3318.4
  1362.25

2+
  6298.3 4 ?  C       1245.3?
  100

  5053.0

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

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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 band.
     0.0 0+ 32.32 s 9 
% β- = 100
     
   707.12 5  2+ 10.7 ps 16     707.05 6 
  100
E2
     0.0
0+
  1830.49 15  4+     1123.37 15 
  100
E2
   707.12
2+

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Additional Gamma Data:















E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
   707.12 2+ 10.7 ps 16     707.05 6 E2 1.18×10-3B(E2)(W.u.)=12.8 19, α=1.18E-3, α(K)=0.001048 15, α(L)=0.0001136 16, α(M)=1.84E-5 3, α(N)=1.84E-6 3
  1362.25 2+ 1.1 ps +4-2     655.17 6 (M1+E2)+0.507 B(E2)(W.u.)=14 6, B(M1)(W.u.)=0.022 6
2+ 1.1 ps +4-2    1362.32 10 E2 2.93×10-4B(E2)(W.u.)=2.8 +6-8, α=2.93E-4, α(K)=0.000223 4, α(L)=2.36E-5 4, α(M)=3.82E-6 6, α(N)=3.86E-7 6
  1763.89 (3,4,2)+      401.4E2 0.00638α=0.00638, α(K)=0.00563 8, α(L)=0.000633 9, α(M)=0.0001024 15, α(N)=1.011×10-5 15
(3,4,2)+     1056.2E2 4.36×10-4α=4.36×10-4, α(K)=0.000388 6, α(L)=4.13E-5 6, α(M)=6.69E-6 10, α(N)=6.74E-7 10
  1830.49 4+     1123.37 15 E2 3.81×10-4α=3.81×10-4, α(K)=0.000338 5, α(L)=3.59E-5 5, α(M)=5.81E-6 9, α(N)=5.86E-7 9
  2853.16 5     1022.7D+Q+0.072 19 

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 32.32 s 9 
% β- = 100
Δ<r2> (89Kr, 90Kr)=0.116 fm2 11 (1996Li25); Δ<r2> (86Kr, 90Kr)=0.5 fm2 1 (1995Ke04). Others: 1992Li24, 1992Ne09.
E(level): Δ<r2> (89Kr, 90Kr)=0.116 fm2 11 (1996Li25); Δ<r2> (86Kr, 90Kr)=0.5 fm2 1 (1995Ke04). Others: 1992Li24, 1992Ne09. Ground state band.
   707.122+ 10.7 ps 16  B(E2)=0.1500 230 (2017El04)
E(level): Ground state band.
  1830.494+   E(level): Ground state band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   707.12   707.05M(γ): Q from γγ(θ) in 252Cf and 248Cm SF decay, M2 excluded by comparison to RUL.
  1362.25   655.17I(γ): from 235U(n,Fγ)
M(γ): d from γγ(θ) in 248Cm SF decay, Δπ=no from level scheme.
  1362.32M(γ): Q from γγ(θ) in 252Cf and 248Cm SF decay, M2 excluded by comparison to RUL.
  1763.89   401.4E(γ): From 252Cf SF decay.
I(γ): from 235U(n,Fγ)
  1056.2E(γ): From 252Cf SF decay.
I(γ): from 235U(n,Fγ)
  2596.49   832.8E(γ): From 252Cf SF decay.
  2853.16  1022.7E(γ): From 252Cf SF decay.
  3084.86  1254.4E(γ): From 252Cf SF decay.
  1321.5E(γ): From 252Cf SF decay.
  3223.5  1393.2E(γ): From 252Cf SF decay.
  1460.3E(γ): From 252Cf SF decay.
  3695.5  1099.0E(γ): From 252Cf SF decay.
  3896.53   672.9E(γ): observed only in 252Cf SF decay. From 252Cf SF decay.
   811.7E(γ): observed only in 252Cf SF decay. From 252Cf SF decay.
  1043.4E(γ): From 252Cf SF decay.
  4036.5   813.4E(γ): From 252Cf SF decay.
  4099.0  1245.8E(γ): from 235U(n,fγ)
  4284.9  1200.0E(γ): From 252Cf SF decay.
  5053.0  1156.6E(γ): From 252Cf SF decay.
  6298.3  1245.3E(γ): observed only in 252Cf SF decay. From 252Cf SF decay.

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