ADOPTED LEVELS, GAMMAS for 185Ta

Author: S. -c. Wu |  Citation: Nucl. Data Sheets 106, 619 (2005) |  Cutoff date: 1-Nov-2005 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1994 keV 15S(n)= 6.63×103 keV 3S(p)= 7.18×103 keV 5Q(α)= 9.8×102 keV 16
Reference: 2012WA38

References:
  A  186W(pol t,α)  B  185Hf β- decay
  C  186W(238U,239NPG) 








E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABC (7/2+) 49.4 m 15 
% β- = 100
     
   164.5 5 AB  (9/2+)     164.5 5 
  100

     0.0
(7/2+)
   175.0 10 A C (9/2-) ≤ 5 ns   175
  100
(E1)
     0.0
(7/2+)
   337.4 13 A C (11/2-)     162
  100
(M1+E2)
   175.0
(9/2-)
   409 4 A   (1/2+) AND (3/2+)        
   528.6 13 A C (13/2-)     191
  354
  100
   11 10 
(M1+E2)
(E2)
   337.4
   175.0
(11/2-)
(9/2-)
   590 4 A   (5/2+) AND (7/2+)        
   689 4 A          
   746.5 14 A C (15/2-)     218
  409
  100
   33 17 
(M1+E2)
(E2)
   528.6
   337.4
(13/2-)
(11/2-)
   811 4 A   (3/2+)        
   890 4 A   (7/2-)        
   980 4 A   (9/2-)        
   992.6 15   C (17/2-)     246
  464
  100
   72 23 
(M1+E2)
(E2)
   746.5
   528.6
(15/2-)
(13/2-)
  1018 4 A          
  1074 4 A          
  1153 4 A   (11/2-)        
  1223 4 A          
  1258.5 16   C (19/2-)     266
  512
  100
   60 17 
(M1+E2)
(E2)
   992.6
   746.5
(17/2-)
(15/2-)
  1258.5+X  C (21/2) > 1 ms      
  1378 4 A          
  1409 4 A          
  1475 4 A   (5/2+)        
  1583 4 A          
  1638 4 A          
  1744 4 A          
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  1837 4 A          

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

Jπ(level): Except as noted, Jπ and Nilsson orbital assignments are based on measured angular distributions, on analyzing powers, and on the comparison of calculated cross sections with experimental values in 186W(pol t,α).

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - 7/2(404) ROTATIONAL band.
     0.0 (7/2+) 49.4 m 15 
% β- = 100
     
   164.5 5  (9/2+)     164.5 5 
  100

     0.0
(7/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - 9/2(514) ROTATIONAL band.
   175.0 10  (9/2-) ≤ 5 ns      
   337.4 13  (11/2-)     162
  100
(M1+E2)
   175.0
(9/2-)
   528.6 13  (13/2-)     191
  354
  100
   11 10 
(M1+E2)
(E2)
   337.4
   175.0
(11/2-)
(9/2-)
   746.5 14  (15/2-)     218
  409
  100
   33 17 
(M1+E2)
(E2)
   528.6
   337.4
(13/2-)
(11/2-)
   992.6 15  (17/2-)        
  1258.5 16  (19/2-)     266
  512
  100
   60 17 
(M1+E2)
(E2)
   992.6
   746.5
(17/2-)
(15/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - 1/2(411) ROTATIONAL band.
   409 4  (1/2+) AND (3/2+)        
   590 4  (5/2+) AND (7/2+)     
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - 7/2(523) ROTATIONAL band.
   890 4  (7/2-)        
   980 4  (9/2-)     
  1153 4  (11/2-)     
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - 3/2(411) ROTATIONAL band.
  1475 4  (5/2+)        

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(7/2+) 49.4 m 15 
% β- = 100
E(level): 7/2(404) ROTATIONAL band.
   164.5(9/2+)   E(level): 7/2(404) ROTATIONAL band.
   175.0(9/2-) ≤ 5 ns E(level): 9/2(514) ROTATIONAL band.
Jπ(level): Spin and parity assignments of levels populated in 186W(238U,239Npγ) are based on rotational band structure and on the (M1+E2) and stretched (E2) multipolarities of intra-band γ-ray transitions.
   337.4(11/2-)   E(level): 9/2(514) ROTATIONAL band.
Jπ(level): Spin and parity assignments of levels populated in 186W(238U,239Npγ) are based on rotational band structure and on the (M1+E2) and stretched (E2) multipolarities of intra-band γ-ray transitions.
   409(1/2+) AND (3/2+)   Doublet. 1/2+,1/2[411] and 3/2+,1/2[411].
E(level): Doublet. 1/2+,1/2[411] and 3/2+,1/2[411]. 1/2(411) ROTATIONAL band.
   528.6(13/2-)   E(level): 9/2(514) ROTATIONAL band.
Jπ(level): Spin and parity assignments of levels populated in 186W(238U,239Npγ) are based on rotational band structure and on the (M1+E2) and stretched (E2) multipolarities of intra-band γ-ray transitions.
   590(5/2+) AND (7/2+)   Doublet. 5/2+,1/2[411] and 7/2+,1/2[411].
E(level): Doublet. 5/2+,1/2[411] and 7/2+,1/2[411]. 1/2(411) ROTATIONAL band.
   746.5(15/2-)   E(level): 9/2(514) ROTATIONAL band.
Jπ(level): Spin and parity assignments of levels populated in 186W(238U,239Npγ) are based on rotational band structure and on the (M1+E2) and stretched (E2) multipolarities of intra-band γ-ray transitions.
   811(3/2+)   Possibly 3/2+,3/2[402] state or K-2 γ vibration based on g.s., or combination of both.
   890(7/2-)   E(level): 7/2(523) ROTATIONAL band.
   980(9/2-)   E(level): 7/2(523) ROTATIONAL band.
   992.6(17/2-)   E(level): 9/2(514) ROTATIONAL band.
Jπ(level): Spin and parity assignments of levels populated in 186W(238U,239Npγ) are based on rotational band structure and on the (M1+E2) and stretched (E2) multipolarities of intra-band γ-ray transitions.
  1153(11/2-)   E(level): 7/2(523) ROTATIONAL band.
  1258.5(19/2-)   E(level): 9/2(514) ROTATIONAL band.
Jπ(level): Spin and parity assignments of levels populated in 186W(238U,239Npγ) are based on rotational band structure and on the (M1+E2) and stretched (E2) multipolarities of intra-band γ-ray transitions.
  1258.5+X(21/2) > 1 ms Probable high-K isomer with configuration= π(5/2[402]7/2[404]9/2[514]) for 21/2-.
  1475(5/2+)   E(level): 3/2(411) ROTATIONAL band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   175.0   175M(γ): (E1) from α(exp)=0.12 18 (1999Wh03) deduced from intensity balance. E2 assignment, however, is not ruled out.

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