ADOPTED LEVELS for 131In

Authors: Yu. Khazov, I. Mitropolsky, A. Rodionov |  Citation: Nucl. Data Sheets 107, 2715 (2006) |  Cutoff date: 17-Jul-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=9247 keV 7S(n)= 6.21×103 keV 4S(p)= 1.378×104 keV 17Q(α)= -1.187×104 keV SY
Reference: 2012WA38

References:
  A  U(n,F) E=THERMAL  B  131Cd β- decay (68 MS)
  C  132Cd β-n decay (97 MS) 




E(level)
(keV)
XREFJπ(level) T1/2(level)
      0.0ABC (9/2+) 0.28 s 3 
% β- = 100
% β-n ≤ 2.0 3
    302 32 AB  (1/2-) 0.35 s 5 
% β- ≥ 99.982
% IT ≤ 0.018
% β-n ≤ 2.0 3
  ≈1650 B  (3/2)  
  ≈2750 B  (5/2)  
   3764 88 A   (21/2+) 0.32 s 6 
% β- > 99
% β-n ≈ 0.03
% IT < 1

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.0(9/2+) 0.28 s 3 
% β- = 100
% β-n ≤ 2.0 3
-n: unweighted average of 1.72 23 (1980Lu04), 1.55 7 (1986Wa17), and 2.64 13 (1993Ru01). Other: 5.5 19 (1981En05). Similarity in T1/2’s does not allow decomposition of the decay curves. From the measured fission yield ratios of E(302):E(3764):g.s.=0.82/0.014/0.16 (1993Ru01) in 235U(n,F) reaction, the evaluators estimate ≈0.3% for g.s., ≈1.6% for (1/2-) isomer and ≈0.03 for (21/2-) isomer. This branching between the g.s. and the first isomer is consistent with that in 127In and 129In.
E(level): %β-n: unweighted average of 1.72 23 (1980Lu04), 1.55 7 (1986Wa17), and 2.64 13 (1993Ru01). Other: 5.5 19 (1981En05). Similarity in T1/2’s does not allow decomposition of the decay curves. From the measured fission yield ratios of E(302):E(3764):g.s.=0.82/0.014/0.16 (1993Ru01) in 235U(n,F) reaction, the evaluators estimate ≈0.3% for g.s., ≈1.6% for (1/2-) isomer and ≈0.03 for (21/2-) isomer. This branching between the g.s. and the first isomer is consistent with that in 127In and 129In. From differences in Q(β-) (2004Fo06).
Jπ(level): From the shell model and systematics of g9/2-p1/2 In isomers.
    302(1/2-) 0.35 s 5 
% β- ≥ 99.982
% IT ≤ 0.018
% β-n ≤ 2.0 3
E(level): From differences in Q(β-) (2004Fo06).
Jπ(level): From the shell model and systematics of g9/2-p1/2 In isomers.
   1650(3/2)   Probable configuration=πp3/2.
   2750(5/2)   Probable configuration=πf5/2.
   3764(21/2+) 0.32 s 6 
% β- > 99
% β-n ≈ 0.03
% IT < 1
E(level): From differences in Q(β-) (2004Fo06).
Jπ(level): From the shell model and systematics of g9/2-p1/2 In isomers.

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