ADOPTED LEVELS, GAMMAS for 169Os

Author: M. Shamsuzzoha Basunia |  Citation: Nucl. Data Sheets 209, 1 (2026) |  Cutoff date: 1-Oct-2025 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8630 keV 30S(n)= 8799 keV 28S(p)= 2220 keV 40Q(α)= 5713 keV 3
Reference: 2021WA16

References:
  A  173Pt α decay (381 MS)  B  92Mo(83Kr,4N2PG),(82Sr,AP2NG)
  C  112Sn(60Ni,2pnγ) 

General Comments:

Identification: excitation functions for 20Ne and 19F bombardments of Dy (1972To19); excitation functions for krypton bombardments of niobium and yttrium (1978Sc26).

Q-value: S(2n)=20370 80, S(2p)=3210 30, Q(εp)=6881 29 (2021Wa16)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB  (7/2-) 3.4 s 2 
% ε = 86.3 8
% α = 13.7 8
     
    34.84 18 A   (5/2-)       34.84 18 
  100
[M1]
     0.0
(7/2-)
   112.3 3 AB  (9/2-)      112.3 3 
  100
[M1]
     0.0
(7/2-)
   136.12 19 A        136.12 19 
  100

     0.0
(7/2-)
   170.97 20 A        170.97 20 
  100

     0.0
(7/2-)
   192.3 11  BC (13/2+) 17.3 µs 12      80?
  100
[M2]
   112.3
(9/2-)
   472.3 15  BC (17/2+) 51 ps 6     280 1 
  100
[E2]
   192.3
(13/2+)
   950.8 17  BC (21/2+) 4.9 ps 7     478 1 
  100
[E2]
   472.3
(17/2+)
  1215.8 17   C (19/2+)      744 1 
  100

   472.3
(17/2+)
  1561.8 19  BC (25/2+)      611 1 
  100

   950.8
(21/2+)
  1812.3 18   C (23/2+)      597 1 
   861 1 
 
  100


  1215.8
   950.8
(19/2+)
(21/2+)
  2025.8 19   C (23/2-)     1075 1 
  100

   950.8
(21/2+)
  2169.8 22   C (25/2-)      608 1 
  100

  1561.8
(25/2+)
  2265.8 22  BC (29/2+)      704 1 
  100

  1561.8
(25/2+)
  2374.8 20   C (27/2-)      349 1 
   813 1 
 
 


  2025.8
  1561.8
(23/2-)
(25/2+)
  2722.8 22   C (31/2-)      348 1 
  100

  2374.8
(27/2-)
  3033.8 24   C (33/2+)      768 1 
  100

  2265.8
(29/2+)
  3168.8 25   C (35/2-)      446 1 
  100

  2722.8
(31/2-)
  3749 3   C (39/2-)      580 1 
  100

  3168.8
(35/2-)
  3817 3   C (37/2+)      783 1 
  100

  3033.8
(33/2+)

E(level): From Eγ.

Jπ(level): From (60Ni,2pnγ); based on likely quasiparticle configurations and comparison with similar structures in neighboring odd-A nuclei, except where otherwise noted.

T1/2(level): From (83Kr,4n2pγ),(82Sr,αp2nγ), except where otherwise noted.

E(γ): From (60Ni,2pnγ), except where 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 - (ν i13/2), α=+1/2 α band (2002Jo20).
   192.3 11  (13/2+) 17.3 µs 12       
   472.3 15  (17/2+) 51 ps 6     280 1 
  100
[E2]
   192.3
(13/2+)
   950.8 17  (21/2+) 4.9 ps 7     478 1 
  100
[E2]
   472.3
(17/2+)
  1561.8 19  (25/2+)      611 1 
  100

   950.8
(21/2+)
  2265.8 22  (29/2+)      704 1 
  100

  1561.8
(25/2+)
  3033.8 24  (33/2+)      768 1 
  100

  2265.8
(29/2+)
  3817 3  (37/2+)      783 1 
  100

  3033.8
(33/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - π=-, α=-1/2 band (2002Jo20). Large alignment (14.4 h at
  2025.8 19  (23/2-)        
  2374.8 20  (27/2-)      349 1 
   813 1 
 
 


  2025.8
  1561.8
(23/2-)
(25/2+)
  2722.8 22  (31/2-)      348 1 
  100

  2374.8
(27/2-)
  3168.8 25  (35/2-)      446 1 
  100

  2722.8
(31/2-)
  3749 3  (39/2-)      580 1 
  100

  3168.8
(35/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - π=+, α=-1/2 band (2002Jo20). Possibly the (ν i13/2),
  1215.8 17  (19/2+)        
  1812.3 18  (23/2+)      597 1 
   861 1 
 
  100


  1215.8
   950.8
(19/2+)
(21/2+)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    34.84 (5/2-)       34.84 18 [M1]21.5α=21.5 4, α(L)=16.57 35, α(M)=3.81 8, α(N)=0.929 19, α(O)=0.1603 33, α(P)=0.01190 25
   112.3 (9/2-)      112.3 3 [M1]4.03α=4.03 6, α(K)=3.33 5, α(L)=0.541 9, α(M)=0.1243 20, α(N)=0.0303 5, α(O)=0.00524 8, α(P)=0.000390 6
   192.3 (13/2+) 17.3 µs 12      80[M2]115.9B(M2)(W.u.)=0.153 +16-13, α=115.9 16, α(K)=75.0 11, α(L)=30.8 4, α(M)=7.80 11, α(N)=1.927 27, α(O)=0.322 5, α(P)=0.01970 28
   472.3 (17/2+) 51 ps 6     280 1 [E2]0.1125B(E2)(W.u.)=104 +14-11, α=0.1125 20, α(K)=0.0705 12, α(L)=0.0319 6, α(M)=0.00791 16, α(N)=0.00191 4, α(O)=0.000295 6, α(P)=7.00E-6 12
   950.8 (21/2+) 4.9 ps 7     478 1 [E2]0.0255B(E2)(W.u.)=81 +14-10, α=0.0255 4, α(K)=0.01898 28, α(L)=0.00497 8, α(M)=0.001196 19, α(N)=0.000290 4, α(O)=4.67E-5 7, α(P)=2.008E-6 30

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   192.3(13/2+) 17.3 µs 12  E(level): (ν i13/2), α=+1/2 α band (2002Jo20).
   472.3(17/2+) 51 ps 6  E(level): (ν i13/2), α=+1/2 α band (2002Jo20).
   950.8(21/2+) 4.9 ps 7  E(level): (ν i13/2), α=+1/2 α band (2002Jo20).
  1215.8(19/2+)   E(level): π=+, α=-1/2 band (2002Jo20). Possibly the (ν i13/2),.
  1561.8(25/2+)   E(level): (ν i13/2), α=+1/2 α band (2002Jo20).
  1812.3(23/2+)   E(level): π=+, α=-1/2 band (2002Jo20). Possibly the (ν i13/2),.
  2025.8(23/2-)   E(level): π=-, α=-1/2 band (2002Jo20). Large alignment (14.4 h at.
  2265.8(29/2+)   E(level): (ν i13/2), α=+1/2 α band (2002Jo20).
  2374.8(27/2-)   E(level): π=-, α=-1/2 band (2002Jo20). Large alignment (14.4 h at.
  2722.8(31/2-)   E(level): π=-, α=-1/2 band (2002Jo20). Large alignment (14.4 h at.
  3033.8(33/2+)   E(level): (ν i13/2), α=+1/2 α band (2002Jo20).
  3168.8(35/2-)   E(level): π=-, α=-1/2 band (2002Jo20). Large alignment (14.4 h at.
  3749(39/2-)   E(level): π=-, α=-1/2 band (2002Jo20). Large alignment (14.4 h at.
  3817(37/2+)   E(level): (ν i13/2), α=+1/2 α band (2002Jo20).

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Additional Gamma Comments:

E(level)E(gamma)Comments
    34.84    34.84E(γ): From 173Pt α Decay (381 ms)
   112.3   112.3E(γ): From 173Pt α Decay (381 ms)
   136.12   136.12E(γ): From 173Pt α Decay (381 ms)
   170.97   170.97E(γ): From 173Pt α Decay (381 ms)
   192.3    80E(γ): From (83Kr,4n2pγ),(82Sr,αp2nγ)
  1812.3   861I(γ): from (60Ni,2pnγ), I(861γ)>I(597γ).
  2374.8   813I(γ): from (60Ni,2pnγ), I(813γ) and I(349γ) are comparable.

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