ADOPTED LEVELS, GAMMAS for 158W

Authors: B. Singh and N. Nica |  Citation: ENSDF |  Cutoff date: 31-DEC-2017 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 12234 keV SYS(p)= 1328 keV SYQ(α)= 6613 keV 3
Reference: 2017WA10

References:
  A  159Re p decay (20 μs)  B  162Os α decay (2.1 MS)
  C  102Pd(58Ni,2nγ) 

General Comments:

Levels: With S(2p)(158W)=390 340 (syst,2017Wa10), all the observed excited states are expected to be unbound towards two-proton emission, but no evidence has been found for this decay mode for the decay of the (8+) isomer

Q-value: ΔS(n)=500, ΔS(p)=335 (2017Wa10)

Q-value: S(2p)=394 syst 335, Q(ε)=7534 syst 358, Q(εp)=7982 syst 358 (2017Wa10)








E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		Final Levels
     0.0ABC 0+ 1.25 ms 21 
% α = 100
   
   913  C (2+)     913
     0.0
0+
  1679  C (4+)     766
   913
(2+)
  1888 8   C (8+) 0.143 ms 19 
% IT = ?
% α ≈ 100
% 2p ≤ 0.17
   
  2048  C (6+)     369
  1679
(4+)
  2846  C (10+)     958
  1888
(8+)
  3690  C (12+)     844
  2846
(10+)
  4165  C (14+)     475
  3690
(12+)
  4368  C (16+)     203
  4165
(14+)

E(level): From Eγ values, except that the isomer energy is based on observed Eα from its decay

Jπ(level): From 2017Jo09, based on yrast sequences built on g.s. and the (8+) isomer, and shell-model configurations

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)Final Levels
Band 1 - γ cascade based on g.s.
   913 (2+)      
  1679 (4+)     766
   913
(2+)
  2048 (6+)     369
  1679
(4+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)Final Levels
Band 2 - γ cascade based on (8+) isomer.
  1888 8  (8+) 0.143 ms 19 
% IT = ?
% α ≈ 100 % 2p ≤ 0.17 		   
  2846 (10+)     958
  1888
(8+)
  3690 (12+)     844
  2846
(10+)
  4165 (14+)      
  4368 (16+)     203
  4165
(14+)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   913(2+)   E(level): Proposed configuration=νf7/22 (2017Jo09).
  1679(4+)   E(level): Proposed configuration=νf7/22 (2017Jo09).
  1888(8+) 0.143 ms 19 
% IT = ?
% α ≈ 100
% 2p ≤ 0.17
%2p branch at 90% confidence level, corresponding to partial T1/2|>85 ms for 2p-decay mode (2017Jo09).
E(level): %2p branch at 90% confidence level, corresponding to partial T1/2|>85 ms for 2p-decay mode (2017Jo09).
  2048(6+)   E(level): Proposed configuration=νf7/22 (2017Jo09).
  2846(10+)   E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09).
  3690(12+)   E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09).
  4165(14+)   E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09).
  4368(16+)   E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09).

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