ADOPTED LEVELS for 166Ir

Author: Coral M. Baglin |  Citation: Nucl. Data Sheets 109, 1103 (2008) |  Cutoff date: 1-Mar-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8.6×103 keV SYS(n)= 9.8×103 keV SYS(p)= -1152 keV 8Q(α)= 6722 keV 6
Reference: 2012WA38

References:
  A  170Au α decay (0.29 MS)  B  170Au α decay (0.62 MS)

General Comments:

Assignment: targets of elements from Mo through Sn and V through Ni were irradiated with beams of 58Ni and 107Ag, respectively. Specific beam energies were in the range between 4.4 MeV/U and 5.9 MeV/U. Velocity filter, ion implantation in Si (surface-barrier and position-sensitive) detectors (1981Ho10,1981HoZM); 58Ni bombardment of 112Sn, E=297 MeV (1996Pa01).

Q-value: Note: Current evaluation has used the following Q record

Q-value: Uncertainty in Q(β-) and S(n) is 540 and 300 (2003Au03).






E(level)
(keV)
XREFJπ(level) T1/2(level)
    0A  (2-) 10.5 ms 22 
% α = 93 3
% p = 7 3
  172 6  B (9+) 15.1 ms 9 
% α = 98.2 6
% p = 1.8 6

Jπ(level): Based on a comparison between measured and calculated partial half-lives for proton emission to (7/2-) 165Os, 1997Da07 conclude that the odd proton occupies the d3/2 orbital in 166Ir(g.s.) (L=2 proton emission) and the h11/2 orbital in 166Ir(172 level) (L=5 proton emission). At very small deformation, the 89th neutron is expected to occupy an f7/2 orbital.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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