ADOPTED LEVELS, GAMMAS for 94Rb

Authors: A. Negret, A.A. Sonzogni |  Citation: ENSDF |  Cutoff date: 31-Mar-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=10283 keV 3S(n)= 4014 keV 8S(p)= 11716 keV 4Q(α)= -6987 keV 4
Reference: 2012WA38

References:
  A  94Kr β- decay  B  235U(n,Fγ)

General Comments:

The possibility of a long-lived isomer at ≈220 keV (first proposed by 1979Ep01 and further discussed by 1982Pa24, 1983PaZQ, and 1982Br23) is rejected by 1984Ka24. From Iγ and I(K x-ray), 1984Ka24 deduce Iγ(IT)/Iγ(836.9γ)=3×10-4 if mult(IT)=M3. Although their half-life measurements result in somewhat different values for two groups of γ-rays belonging to different Qβ- values (2.700 s 7 compared to 2.654 s 9), 1984Ka24 conclude that this difference is too small to establish two separate half-lives.

2007Ra23: precise mass measurement using Pennning-trap system

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

Q-value: S(2n)=9932 7, S(2p)=26907 8, Q(β-n)=3453 8 (2011AuZZ)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0AB 3(-) 2.702 s 5 
% β- = 100
% β-n = 10.5 4
     
     4.54 11 A         
   190.87 11 A  2.5 ns 8     186.320 7 
   191.5 10 ?
  100 6 
   13.6 13 


     4.54
     0.0

3(-)
   217.3 8  B (4-)      217.2
  100

     0.0
3(-)
   223.82 10 A       219.466 52 
  100

     4.54

   292.72 11 A       288.175 16 
  100

     4.54

   328.3 8  B (5-)      111.1
   328.4
 
 


   217.3
     0.0
(4-)
3(-)
   359.01 10 A  (1,2,3)      135.190 6 
   167.3 1 
   354.51 6 
   359.0 1 
   35 3 
   84 14 
   73 5 
  100 16 




   223.82
   190.87
     4.54
     0.0



3(-)
   394.7 3 A  (1,2,3)      203.4 10 ?
   394.9 8 
   16.7 19 
  100 3 


   190.87
     0.0

3(-)
   528.1 11  B (5)      310.8
  100

   217.3
(4-)
   667.6 9  B (6-)      339.2
   450.2
 
 


   328.3
   217.3
(5-)
(4-)
   696.5 9  B (6-)      168.4
   368.3
   479.3
 
 
 



   528.1
   328.3
   217.3
(5)
(5-)
(4-)
   866.4 8 ?A       471.6 8 ?
  100

   394.7
(1,2,3)
   988.34 13 A  (1+)      121 2 ?
   593.7 3 
   629.3 1 
   695.8 3 
   764.5 2 
   985 1 ?
    4.9 5 
   16 4 
  100
   25.2 18 
   71 8 
    1.8 3 






   866.4
   394.7
   359.01
   292.72
   223.82
     4.54

(1,2,3)
(1,2,3)



E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  1288.5 11  B (7)      960.2
  100

   328.3
(5-)
  1315.5 10  B (7-)       27S
   619.0
   647.8
 
 
 



  1288.5
   696.5
   667.6
(7)
(6-)
(6-)
  1316.5 10  B (7-)      648.8
   988.2
 
 


   667.6
   328.3
(6-)
(5-)
  1485.2 10  B (8+) 18 ns 1     168.7
   169.8
   817.7
 
 
 



  1316.5
  1315.5
   667.6
(7-)
(7-)
(6-)
  1660.5 14  B (8)      345.0
  100

  1315.5
(7-)
  2074.9 14  B (10-) 107 ns 16     589.7
  100
[M2]
  1485.2
(8+)
  2192.3 14  B (9)      707.0
  100

  1485.2
(8+)
  2567.0 14  B (10-)     1081.7
  100

  1485.2
(8+)
  2634.1 14  B (10-)     1148.8
  100

  1485.2
(8+)
  2785.6 17  B (12-)      710.9
  100

  2074.9
(10-)
  2909.2 17  B (12)      834
  100

  2074.9
(10-)
  3335.0 18  B (12)     1260
  100

  2074.9
(10-)
  3679.4 17  B (14)      770
   894
 
 


  2909.2
  2785.6
(12)
(12-)
  3711.5 18  B (14-)      925.9
  100

  2785.6
(12-)
  3944.2 19  B (15)      232.7
   264.7?
 
 


  3711.5
  3679.4
(14-)
(14)

E(level): From a least-squares fit to Eγ, assuming ΔEγ=1 keV when unknown.

Jπ(level): The values for excited states populated in (n,Fγ) are deduced from gamma decay pattern and assuming spin increases with excitation energy. The values for the excited states populated in β- decay are obtained assuming that direct β feeding goes to a (1+) level which cascades down to a 3(-) g.s.

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
  2074.9 (10-) 107 ns 16     589.7[M2]0.00483B(M2)(W.u.)=0.20 3, α=0.00483 7, α(K)=0.00426 6, α(L)=0.000478 7, α(M)=7.91×10-5 11, α(N)=8.96E-6 13, α(O)=3.85E-7 6, α(N+)=9.35E-6 13

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.03(-) 2.702 s 5 
% β- = 100
% β-n = 10.5 4
Q=+0.163 50, μ=+1.4984 18
-n: from weighted average of 10.9 7 (1993Ru01), 9.7 6 (1983Ok07), 11.1 9 (1981En05), 10.1 6 (1980Lu04), 9.7 5 (1979Ri09), 11.6 7 (1979WaZU), 13.7 10 (1977Re05), 9.6 8 (1975As04), 9.3 18 (1975Iz03), 12.1 13 (1974Ro15 recalibrated by 1981Bj01).
E(level): %β-n: from weighted average of 10.9 7 (1993Ru01), 9.7 6 (1983Ok07), 11.1 9 (1981En05), 10.1 6 (1980Lu04), 9.7 5 (1979Ri09), 11.6 7 (1979WaZU), 13.7 10 (1977Re05), 9.6 8 (1975As04), 9.3 18 (1975Iz03), 12.1 13 (1974Ro15 recalibrated by 1981Bj01).
   190.87 2.5 ns 8  T1/2(level): From γ(t) in 94Kr β- decay.
  1485.2(8+) 18 ns 1  Configuration=πg9/2~#νg7/2.
T1/2(level): From γγ(t) in 235U(n,Fγ).
  2074.9(10-) 107 ns 16  Configuration=πg9/2~#νh11/2.
T1/2(level): From γγ(t) in 235U(n,Fγ).

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