ADOPTED LEVELS, GAMMAS for 138I

Author: Jun Chen |  Citation: Nucl. Data Sheets 146, 1 (2017) |  Cutoff date: 30-Sep-2017 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=7992 keV 7S(n)= 3695 keV 10S(p)= 9965 keV 6Q(α)= -384 keV 6
Reference: 2017WA10

References:
  A  248Cm SF decay 

General Comments:

First identification of 138I nuclide by 1949Su14 via neutron-induced fission (see 2013Ka01).

2011Ba33: 239Pu(n,F) E=thermal, measured Eγ, Iγ. Deduced fission yields.

2010MaZS: measured Eγ, Iγ, E(n), I(n). Deduced β-delayed neutron decay probability.

2006Ro26: 235U,239Pu(n,F) E=thermal-1.2 MeV. Measured cumulative yields.

2002Is13: 235U(n,F) E=thermal. Measured delayed neutron yields.

2000Lh02: 238U(n,F) E=20 MeV and 238U(p,F) E=25 MeV. Measured yields

2006KeZZ: 138Te β- decay, measured parent T1/2.

Mass measurement: 2012Va02

Other measurements: 2010MaZR, 1983En05, 1980De03, 1979Bo26, 1978Kr15, 1977Ru10, 1976Lu02, 1974Gr29, 1974Kr21, 1973Ad04, 1972Sc48, 1971Kr22

Nuclear structure calculations:

2009Co21, 2007Ma09, 2006Ka46: calculated half-life

1982Ma02: calculated T1/2, average Eβ, Eγ, β-delayed En, delayed-neutron emission probability.

Other calculations: 1982Ru01, 1978Gj01, 1978Gj02

Q-value: S(2n)=8577 15, S(2p)=22051 8, Q(β-n)=2332 6, Q(2β+)=10907 11 (2017Wa10)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0A (1-) 6.26 s 3 
% β- = 100
% β-n = 5.44 20
     
    67.9 3 ?A (3-) 1.26 µs 16 
% IT = 100
   67.9?
 
E2
     0.0
(1-)
   186.2 5 A (4-)     118.3
  100

    67.9
(3-)
   222.3 4 A (4-)     154.6
  100

    67.9
(3-)
   229.2 4 A (5-)      43.5?
  161.1
   71 36 
  100 29 


   186.2
    67.9
(4-)
(3-)
   297.4 5 A (6-)      68.2
  100
M1+E2
   229.2
(5-)
   362.9 6 A (7-)      65.6
  100
M1+E2
   297.4
(6-)
   722.9 6 A (8-)     360.1
  425.5
  100 13 
   62 10 
(M1+E2)
(E2)
   362.9
   297.4
(7-)
(6-)
   994.1 6 A (9-)     271.4
  631.1
   38 8 
  100 14 
(M1+E2)
(E2)
   722.9
   362.9
(8-)
(7-)
  1303.7 6 A (10-)     309.4
  580.6
   44 11 
  100 17 
(M1+E2)
(E2)
   994.1
   722.9
(9-)
(8-)
  1577.3 6 A (11-)     273.7
  583.6
   24 6 
  100 18 
(M1+E2)
(E2)
  1303.7
   994.1
(10-)
(9-)
  1828.6 7 A (12-)     251.8
  524.5
  100
   12 3 
(M1+E2)
(E2)
  1577.3
  1303.7
(11-)
(10-)

E(level): From a least-squares fit to γ-ray energies, assuming an uncertainty of 0.3 keV for each γ ray.

Jπ(level): From 2007Rz01, based on deduced γ-ray multipolarities and band structure, unless otherwise noted.

M(γ): From 2007Rz01 based on band assignments and γγ(θ) data, which are consistent with ΔJ=1 (Mult.=M1+E2) or ΔJ=2 (Mult.=E2), with brackets added by evaluator, unless otherwise noted.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - ΔJ=1, πg7/2~#νf7/2.
   362.9 6  (7-)        
   722.9 6  (8-)     360.1
  425.5
  100 13 
   62 10 
(M1+E2)
(E2)
   362.9
   297.4
(7-)
(6-)
   994.1 6  (9-)     271.4
  631.1
   38 8 
  100 14 
(M1+E2)
(E2)
   722.9
   362.9
(8-)
(7-)
  1303.7 6  (10-)     309.4
  580.6
   44 11 
  100 17 
(M1+E2)
(E2)
   994.1
   722.9
(9-)
(8-)
  1577.3 6  (11-)     273.7
  583.6
   24 6 
  100 18 
(M1+E2)
(E2)
  1303.7
   994.1
(10-)
(9-)
  1828.6 7  (12-)     251.8
  524.5
  100
   12 3 
(M1+E2)
(E2)
  1577.3
  1303.7
(11-)
(10-)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    67.9 (3-) 1.26 µs 16 
% IT = 100
   67.9E27.00B(E2)(W.u.)=0.92 +20-16, α=7.00, α(K)=3.80 6, α(L)=2.55 4, α(M)=0.544 8, α(N)=0.1041 15, α(O)=0.00931 13
   297.4 (6-)      68.2M1+E24.6α=4.6 24, α(K)=2.8 10, α(L)=1.4 12, α(M)=0.29 24, α(N)=0.06 5, α(O)=0.005 4
   362.9 (7-)      65.6M1+E25α=5 3, α(K)=3.2 10, α(L)=1.6 14, α(M)=0.3 3, α(N)=0.07 6, α(O)=0.006 5
   722.9 (8-)     425.5(E2)0.01362α=0.01362, α(K)=0.01149 16, α(L)=0.001706 24, α(M)=0.000347 5, α(N)=6.92×10-5 10, α(O)=7.67E-6 11
  1303.7 (10-)     580.6(E2)0.00569α=0.00569, α(K)=0.00486 7, α(L)=0.000670 10, α(M)=0.0001354 19, α(N)=2.72×10-5 4, α(O)=3.08E-6 5
  1577.3 (11-)     273.7(M1+E2)0.051α=0.051 4, α(K)=0.0427 20, α(L)=0.0065 13, α(M)=0.0013 3, α(N)=0.00026 5, α(O)=2.9×10-5 5
  1828.6 (12-)     524.5(E2)0.00750α=0.00750, α(K)=0.00638 9, α(L)=0.000898 13, α(M)=0.000182 3, α(N)=3.64×10-5 6, α(O)=4.10E-6 6

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(1-) 6.26 s 3 
% β- = 100
% β-n = 5.44 20
Theoretical T1/2=11.5 s, %β-n=2.4 (2003Mo09).
   362.9(7-)   E(level): ΔJ=1, πg7/2~#νf7/2.
   722.9(8-)   E(level): ΔJ=1, πg7/2~#νf7/2.
   994.1(9-)   E(level): ΔJ=1, πg7/2~#νf7/2.
  1303.7(10-)   E(level): ΔJ=1, πg7/2~#νf7/2.
  1577.3(11-)   E(level): ΔJ=1, πg7/2~#νf7/2.
  1828.6(12-)   E(level): ΔJ=1, πg7/2~#νf7/2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    67.9    67.9M(γ): from K/L=1.56 20 (2007Rz01)
   297.4    68.2M(γ): from αK(exp)=6 1 (2007Rz01)
   362.9    65.6M(γ): from αK(exp)=6.5 15 (2007Rz01)
   722.9   425.5M(γ): Proposed by 2007Rz01 with brackets added by evaluator. No experimental evidence is provided in 2007Rz01 for these assignments.
  1303.7   580.6M(γ): Proposed by 2007Rz01 with brackets added by evaluator. No experimental evidence is provided in 2007Rz01 for these assignments.
  1577.3   273.7M(γ): Proposed by 2007Rz01 with brackets added by evaluator. No experimental evidence is provided in 2007Rz01 for these assignments.
  1828.6   524.5M(γ): Proposed by 2007Rz01 with brackets added by evaluator. No experimental evidence is provided in 2007Rz01 for these assignments.

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