ADOPTED LEVELS, GAMMAS for 76Rb

Author: Balraj Singh |  Citation: Nucl. Data Sheets 74,63 (1995) |  Cutoff date: 22-Dec-1994 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-6.23×103 keV 4S(n)= 11331.7 keV 15S(p)= 3444 keV 9Q(α)= -3837 keV 7
Reference: 2012WA38

References:
  A  76Sr ε decay (8.9 S)  B  (HI,xnγ)

General Comments:

Q(εp)=1373 16 (1993Au05)

Search for delayed proton decay from 77Y formed in 40Ca(40Ca,p2n) reaction: 1989HoZK. No definite results are reported

Mass measurement: 1994Ot01, 1979Ep01

Hyperfine structure: 1986Du16, 1981Th04

Structure calculations: 1992Ta01 (moment of inertia vs. angular frequency); 1990Be32 (mass defect); 1987My01 (rms charge radii)

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

Q-value: Uncertainty for Q(β-)=300 (1993Au05)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0AB 1(-) 36.5 s 6 
% ε = 100
% εα = 3.8×10-7 10
     
   101.29 4 AB (2-)      101.30 4 
  100
(M1)
     0.0
1(-)
   246.38 6 AB (3-)      145.11 5 
   246.32 10 
  100 10 
   20 6 
D

   101.29
     0.0
(2-)
1(-)
   316.93 8 AB (4+) 3.20 µs 10      70.55 5 
   317.0 3 ?
  100
 
D

   246.38
     0.0
(3-)
1(-)
   454.4 2  B (4-)      208.2 3 
   352.9 3 
  100 20 
   13 7 


   246.38
   101.29
(3-)
(2-)
   476.8 2 A  (1+)      159.8 4 ?
   230.2 2 
   375.4 2 
   476.8 2 
    1.2 5 
    4.7 12 
   28 5 
  100




   316.93
   246.38
   101.29
     0.0
(4+)
(3-)
(2-)
1(-)
   497.2 3  B (5+)      180.2 3 
  100

   316.93
(4+)
   516.0 2 A  (1+)      414.6 2 
   516.0 5 ?
  100 15 
 


   101.29
     0.0
(2-)
1(-)
   689.6 2  B (5-)      235.1 3 
   443.3 3 
  100 22 
   33 11 


   454.4
   246.38
(4-)
(3-)
   707.2 3  B (6+)      210.0 3 
   390.3 3 
  100 10 
   13 3 


   497.2
   316.93
(5+)
(4+)
   977.8 3  B (7+)      270.7 3 
   480.6 3 
  100 20 
   20 7 


   707.2
   497.2
(6+)
(5+)
   982.9 2 A  (1+)      466.9 2 ?
   506.1 5 ?
   665.7 4 ?
   735.8 4 ?
   881.5 2 
   982.9 2 
   12 3 
 
    2 1 
    3.7 13 
   56 12 
  100 17 






   516.0
   476.8
   316.93
   246.38
   101.29
     0.0
(1+)
(1+)
(4+)
(3-)
(2-)
1(-)
  1009.8 3  B (6-)      320.4 3 
   555.2 3 
  100 33 
   67 33 


   689.6
   454.4
(5-)
(4-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  1256.4 4  B (8+)      278.7 3 
   549.2 3 
  100 20 
   50 10 


   977.8
   707.2
(7+)
(6+)
  1275 1 ?A  (1+)     1174 1 ?
  100

   101.29
(2-)
  1332.9 3  B (7-)      323.2 3 
   643.2 3 
  100 50 
   50 25 


  1009.8
   689.6
(6-)
(5-)
  1620.1 4  B (9+)      363.8 3 
   642.2 3 
  100 33 
   67 33 


  1256.4
   977.8
(8+)
(7+)
  2019.1 5  B (10+)      398.5?
   762.7 3 
 
  100 50 


  1620.1
  1256.4
(9+)
(8+)
     0.0+X B        
   104.4+X B      104.4 3 
  100

     0.0+X

   345.9+X B      241.5 3 
  100

   104.4+X

   636.7+X B      290.8 3 
   532.1
  100 21 
 


   345.9+X
   104.4+X


   969.7+X B      333.2 3 
   623.6 3 
  100 28 
   28 14 


   636.7+X
   345.9+X


  1362.1+X B      392.2 3 
   725.6 3 
  100 50 
   50 25 


   969.7+X
   636.7+X


E(level): From least-squares fit to Eγ’s

Jπ(level): Probable band assignments generally supported by ΔJ=1 from γ(θ) data in (HI,xnγ)

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Kπ=1- band (1988Ga13)
     0.0 1(-) 36.5 s 6 
% ε = 100
% εα = 3.8×10-7 10
     
   101.29 4  (2-)      101.30 4 
  100
(M1)
     0.0
1(-)
   246.38 6  (3-)      145.11 5 
   246.32 10 
  100 10 
   20 6 
D

   101.29
     0.0
(2-)
1(-)
   454.4 2  (4-)      208.2 3 
   352.9 3 
  100 20 
   13 7 


   246.38
   101.29
(3-)
(2-)
   689.6 2  (5-)      235.1 3 
   443.3 3 
  100 22 
   33 11 


   454.4
   246.38
(4-)
(3-)
  1009.8 3  (6-)      320.4 3 
   555.2 3 
  100 33 
   67 33 


   689.6
   454.4
(5-)
(4-)
  1332.9 3  (7-)      323.2 3 
   643.2 3 
  100 50 
   50 25 


  1009.8
   689.6
(6-)
(5-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Kπ=4+ band (1988Ga13)
   316.93 8  (4+) 3.20 µs 10       
   497.2 3  (5+)      180.2 3 
  100

   316.93
(4+)
   707.2 3  (6+)      210.0 3 
   390.3 3 
  100 10 
   13 3 


   497.2
   316.93
(5+)
(4+)
   977.8 3  (7+)      270.7 3 
   480.6 3 
  100 20 
   20 7 


   707.2
   497.2
(6+)
(5+)
  1256.4 4  (8+)      278.7 3 
   549.2 3 
  100 20 
   50 10 


   977.8
   707.2
(7+)
(6+)
  1620.1 4  (9+)      363.8 3 
   642.2 3 
  100 33 
   67 33 


  1256.4
   977.8
(8+)
(7+)
  2019.1 5  (10+)      398.5?
   762.7 3 
 
  100 50 


  1620.1
  1256.4
(9+)
(8+)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   101.29 (2-)      101.30 4 (M1)0.139α=0.139

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.01(-) 36.5 s 6 
% ε = 100
% εα = 3.8×10-7 10
μ=-0.3726228 14 (1989Ra17,1981Th04,1986Du16), Q=+0.38 15 (1989Ra17,1981Th04)
Mass excess=-60670 keV 150 (1979Ep01), -60763 keV 146 (1982Au01), -60907 keV 45 (1982Mo10, deduced from Q(β-) measurement).
E(level): Kπ=1- band (1988Ga13).
   101.29(2-)   E(level): Kπ=1- band (1988Ga13).
   246.38(3-)   E(level): Kπ=1- band (1988Ga13).
   316.93(4+) 3.20 µs 10  Population uncertain in 76Sr ε.
E(level): Kπ=4+ band (1988Ga13).
   454.4(4-)   E(level): Kπ=1- band (1988Ga13).
   476.8(1+)   Jπ(level): Probable allowed ε,β+ feeding from 0+.
   497.2(5+)   E(level): Kπ=4+ band (1988Ga13).
   516.0(1+)   Jπ(level): Probable allowed ε,β+ feeding from 0+.
   689.6(5-)   E(level): Kπ=1- band (1988Ga13).
   707.2(6+)   E(level): Kπ=4+ band (1988Ga13).
   977.8(7+)   E(level): Kπ=4+ band (1988Ga13).
   982.9(1+)   Jπ(level): Probable allowed ε,β+ feeding from 0+.
  1009.8(6-)   E(level): Kπ=1- band (1988Ga13).
  1256.4(8+)   E(level): Kπ=4+ band (1988Ga13).
  1275(1+)   Jπ(level): Probable allowed ε,β+ feeding from 0+.
  1332.9(7-)   E(level): Kπ=1- band (1988Ga13).
  1620.1(9+)   E(level): Kπ=4+ band (1988Ga13).
  2019.1(10+)   E(level): Kπ=4+ band (1988Ga13).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   101.29   101.30M(γ): from intensity balance at 101 level in 76Sr ε decay. γ(θ) data in (HI,xnγ) are consistent with mult=dipole
   246.38   145.11I(γ): from delayed isomer decay (see (HI,xnγ)). Uncertainty of 10% assigned by the evaluator
M(γ): from γ(θ) and intensity balance in (HI,xnγ)
   246.32I(γ): average of 25 8 (76Sr ε) and 14 2 (delayed intensity in 3.20 μs isomer decay,see (HI,xnγ))
   316.93    70.55M(γ): from intensity balance at 317 level in (HI,xnγ)

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