ADOPTED LEVELS, GAMMAS for 81Ge

Author: M. Shamsuzzoha Basunia |  Citation: Nucl. Data Sheets 199, 271 (2025) |  Cutoff date: 1-Sep-2024 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=6242 keV 3S(n)= 4827.7 keV 29S(p)= 14357 keV 4Q(α)= -9927.4 keV 28
Reference: 2021WA16

References:
  A  81Ga β- decay (1.219 S)  B  82Ga β-n decay
  C  2H(80Ge,p) 








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0AB  (9/2+) 6.4 s 2 
% β- = 100
     
   679.14 4 ABC (1/2+) 7.6 s 6 
% β- = 100
     
   711.208 22 ABC (5/2+) 3.9 ns 2     711.19 3 
  100
[E2]
     0
(9/2+)
   895.63 5 AB  (1/2-) < 0.5 ns    216.47 3 
  100
E1
   679.14
(1/2+)
  1241.445 24 ABC (1/2+,3/2,5/2+)      530.22 4 
   562.37 5 
  100 5 
   16.5 8 


   711.208
   679.14
(5/2+)
(1/2+)
  1286.467 23 AB  (5/2+,7/2-)     1286.39 3 
  100

     0
(9/2+)
  1303.23 3 A   (5/2+,7/2,9/2+)     1303.20 3 
  100

     0
(9/2+)
  1409.93 4 A        698.69 3 
  100

   711.208
(5/2+)
  1548.505 24 A   (5/2+,7/2)      262.03 4 
  1548.51 3 
    5.9 4 
  100 4 


  1286.467
     0
(5/2+,7/2-)
(9/2+)
  1577.02 11 A        865.81 10 
  100

   711.208
(5/2+)
  1723.97 5 AB  (3/2-,5/2-)      437.42 4 
   482.51 3 
   828.26 5 
    0.75 5 
   15.1 8 
  100 5 



  1286.467
  1241.445
   895.63
(5/2+,7/2-)
(1/2+,3/2,5/2+)
(1/2-)
  1731.04 4 AB  (5/2+,7/2)     1019.80 4 
  1730.95 7 
  100 5 
   22.3 12 


   711.208
     0
(5/2+)
(9/2+)
  1805.54 7 A   (5/2+,7/2)      256.6 3 
   501.90 17 
  1805.61 7 
   35 7 
   73 8 
  100 6 



  1548.505
  1303.23
     0
(5/2+,7/2)
(5/2+,7/2,9/2+)
(9/2+)
  1816.23 3 A   (3/2-)      574.83 5 
   920.7 3 
  1104.93 9 
  1137.07 4 
  100 7 
   13 4 
   49 4 
   79 4 




  1241.445
   895.63
   711.208
   679.14
(1/2+,3/2,5/2+)
(1/2-)
(5/2+)
(1/2+)
  1832.23 5 AB  (3/2-,5/2-)      936.62 4 
  100

   895.63
(1/2-)
  1855.34 5 A        613.89 4 
  1144
  100 8 
   62


  1241.445
   711.208
(1/2+,3/2,5/2+)
(5/2+)
  2138.38 4 A   (5/2+,7/2)      728.32 6 
  2138.39 5 
   42 4 
  100 5 


  1409.93
     0

(9/2+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2174.87 7 A        626.36 6 
   933
  100 8 
   83


  1548.505
  1241.445
(5/2+,7/2)
(1/2+,3/2,5/2+)
  2419.90 4 A       1116.63 5 
  2419.94 15 
  100 6 
   63 5 


  1303.23
     0
(5/2+,7/2,9/2+)
(9/2+)
  2529.30 6 A   (3/2,5/2-)      805.32 5 
  1633.47 9 
  1818.15 7 
   85 4 
  100 6 
   22.1 17 



  1723.97
   895.63
   711.208
(3/2-,5/2-)
(1/2-)
(5/2+)
  2549.97 11 AB  (5/2+,7/2)     2549.93 11 
  100

     0
(9/2+)
  2563.18 6 A   (3/2,5/2-)      730.84 5 
  1667.61 6 
  1852.37 15 
   98 5 
  100 5 
   57 5 



  1832.23
   895.63
   711.208
(3/2-,5/2-)
(1/2-)
(5/2+)
  2693.68 10 A        962.64 11 
  1982.4 2 
  100 6 
   65 9 


  1731.04
   711.208
(5/2+,7/2)
(5/2+)
  2996.72 5 AB  (3/2-,5/2-,7/2-)     1164.53 3 
  1272.71 3 
  1448.25 7 
  1710.2 2 
   19.4 11 
  100 5 
    7.6 5 
   11 4 




  1832.23
  1723.97
  1548.505
  1286.467
(3/2-,5/2-)
(3/2-,5/2-)
(5/2+,7/2)
(5/2+,7/2-)
  3021.39 7 A   (3/2,5/2-)     1189.16 6 
  2125.69 11 
  2311.14?
   57 3 
  100 6 
   18



  1832.23
   895.63
   711.208
(3/2-,5/2-)
(1/2-)
(5/2+)
  3129.05 6 A   (3/2,5/2,7/2)     1405.07 4 
  100

  1723.97
(3/2-,5/2-)
  3437.23 6 AB  (3/2-,5/2-)     1604.93 7 
  1713.26 4 
  2541.39 11 
  2726.11 9 
   14.4 8 
  100 4 
   19.0 14 
   27.1 14 




  1832.23
  1723.97
   895.63
   711.208
(3/2-,5/2-)
(3/2-,5/2-)
(1/2-)
(5/2+)
  3503.09 3 A   (7/2-)     1083.22 6 
  1671.4 4 
  1779.05 3 
  1955.61?
  2216.24 15 
  2792.02 12 
  3503.24 8 
   25.2 14 
    3.9 9 
   58 3 
   17
   16.8 14 
   20.6 17 
  100 6 







  2419.90
  1832.23
  1723.97
  1548.505
  1286.467
   711.208
     0

(3/2-,5/2-)
(3/2-,5/2-)
(5/2+,7/2)
(5/2+,7/2-)
(5/2+)
(9/2+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  3665.56 8 A   (7/2-)     2116.6 2 
  2379.0 4 
  2955.0 2 ?
  3665.54 8 
   23 3 
   51 10 
   43 5 
  100 4 




  1548.505
  1286.467
   711.208
     0
(5/2+,7/2)
(5/2+,7/2-)
(5/2+)
(9/2+)
  3697.95 10 A   (7/2)     2986.4 2 
  3697.95 11 
   84 10 
  100 6 


   711.208
     0
(5/2+)
(9/2+)
  3772.88 4 A   (7/2-)      776.21 4 
  1352.87 7 
  1940.97 6 ?
  1955.61?
  2041.62 9 
  2362.91 14 
  3773.08 18 
  100 6 
   97 6 
   84 4 
   29
   43 3 
   41 4 
   55 5 







  2996.72
  2419.90
  1832.23
  1816.23
  1731.04
  1409.93
     0
(3/2-,5/2-,7/2-)

(3/2-,5/2-)
(3/2-)
(5/2+,7/2)

(9/2+)
  3820.15 19 A   (3/2,5/2,7/2)     2095.6 5 
  2271.7 2 
   54 18 
  100 10 


  1723.97
  1548.505
(3/2-,5/2-)
(5/2+,7/2)
  4012.91 6 A   (3/2-,5/2-,7/2-)      991.06 7 ?
  1016.42 14 
  1483.45 12 
  1874.36 9 
  2180.66 4 
  2281.72 11 
  2288.58 14 
  2436.54 15 ?
  2464.67 12 
  2771.85 16 
   27.0 18 
   37 4 
   11.6 7 
   43.6 24 
  100 6 
   37.9 21 
   29.6 15 
   19.4 13 
   28.7 21 
   13.1 13 










  3021.39
  2996.72
  2529.30
  2138.38
  1832.23
  1731.04
  1723.97
  1577.02
  1548.505
  1241.445
(3/2,5/2-)
(3/2-,5/2-,7/2-)
(3/2,5/2-)
(5/2+,7/2)
(3/2-,5/2-)
(5/2+,7/2)
(3/2-,5/2-)

(5/2+,7/2)
(1/2+,3/2,5/2+)
  4035.31 7 A   (7/2-)     2311.14 19 ?
  4035.20 7 
   18
  100 7 


  1723.97
     0
(3/2-,5/2-)
(9/2+)
  4168.17 6 A   (3/2-)     2335.75 13 
  2444.15 4 
  2881.6 3 
  2926.4 3 
  3272.82 17 
  3489.01 10 
    8.5 6 
  100 3 
    6.2 11 
    2.9 6 
    2.3 3 
    7.8 5 






  1832.23
  1723.97
  1286.467
  1241.445
   895.63
   679.14
(3/2-,5/2-)
(3/2-,5/2-)
(5/2+,7/2-)
(1/2+,3/2,5/2+)
(1/2-)
(1/2+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  4276.77 16 A   (3/2,5/2,7/2)     2552.76 15 
  100

  1723.97
(3/2-,5/2-)
  4470.53 20 A   (7/2-)     2922
  4470.4 2 
    9
  100 7 


  1548.505
     0
(5/2+,7/2)
(9/2+)

E(level): From least-squares fit to Eγ, omitting Eγ for uncertain or doubly-placed lines and for lines whose Eγ deviates from least-squares adjusted value by at least 3σ (991γ, 1941γ, 2436γ and 2955γ from 4012.9, 3772.8, 4012.9, and 3665.6 keV levels, respectively.

T1/2(level): From 81Ga β- decay (1981Ho24), except where otherwise noted.

Back to top

Back to top

Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
   711.208 (5/2+) 3.9 ns 2     711.19 3 [E2]8.42×10-4B(E2)(W.u.)=0.0383 +21-19, α=8.42E-4 12, α(K)=0.000751 11, α(L)=7.79E-5 11, α(M)=1.161E-5 16, α(N)=7.51E-7 11
   895.63 (1/2-) < 0.5 ns    216.47 3 E10.00692α=0.00692 10, α(K)=0.00619 9, α(L)=0.000634 9, α(M)=9.43×10-5 13, α(N)=6.01E-6 8

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0(9/2+) 6.4 s 2 
% β- = 100
Isomeric yield (high spin state over total yield) of 0.97 1 and 0.92 2 for 25-MeV proton-induced fission of natU and 232Th, respectively (2018Ra19). Other isomeric yield: 0.975 7 (2019Ra01).
E(level): Isomeric yield (high spin state over total yield) of 0.97 1 and 0.92 2 for 25-MeV proton-induced fission of natU and 232Th, respectively (2018Ra19). Other isomeric yield: 0.975 7 (2019Ra01).
   679.14(1/2+) 7.6 s 6 
% β- = 100
%IT<1 (1981Ho24).
E(level): %IT<1 (1981Ho24).
Jπ(level): 1/2- is expected, based on systematics of Jπ (isomeric state) in other odd-mass n=49 isotones. However, if Jπ=1/2-, B(M4)(W.u.)<1.4 (low cf. values ranging from 7.0 5 to 19 1 for seven known M4 transitions between 1/2- and 9/2+ states (1979En04)). Therefore, 1981Ho24 presume that the 679 level is the 1/2+ level also expected at low energy (based on level energy systematics), and that the 1/2- state is the 896 level which deexcites via an E1 transition to the 679 level.
  1241.445(1/2+,3/2,5/2+)   XREF: C(1160).

Back to top

Additional Gamma Comments:

E(level)E(gamma)Comments
   895.63   216.47M(γ): from α(K)exp, 81Ga β- decay.
  1241.445   530.22I(γ): other: 100 44 in 82Ga β-n decay
   562.37I(γ): Other: 30 9 in 82Ga β-n Decay
  1723.97   482.51I(γ): other: 22 6 in 82Ga β-n Decay
   828.26I(γ): other: 100 28 in 82Ga β-n decay
  3021.39  2311.14E(γ): 2311.14 19 for doublet.. Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  3437.23  1713.26I(γ): other: 43 14 in 82Ga β-n Decay
  2726.11I(γ): other: 100 29 in 82Ga β-n Decay
  3503.09  1955.61E(γ): 1955.61 7 for doublet.. Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  3665.56  2955.0E(γ): Eγ lies at least 3σ from least-squares adjusted value; datum excluded from least-squares level energy adjustment.
  3772.88  1940.97E(γ): Eγ lies at least 3σ from least-squares adjusted value; datum excluded from least-squares level energy adjustment.
  1955.61E(γ): 1955.61 7 for doublet.. Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
  4012.91   991.06E(γ): Eγ lies at least 3σ from least-squares adjusted value; datum excluded from least-squares level energy adjustment.
  2436.54E(γ): Eγ lies at least 3σ from least-squares adjusted value; datum excluded from least-squares level energy adjustment.
  4035.31  2311.14E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided

Back to top