ADOPTED LEVELS, GAMMAS for 167W

Authors: Balraj Singh and Jun Chen |  Citation: Nucl. Data Sheets 191, 1 (2023) |  Cutoff date: 22-Aug-2023 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-7260 keV SYS(n)= 8277 keV 21S(p)= 3280 keV 30Q(α)= 4751 keV 30
Reference: 2021WA16

References:
  A  167Re ε decay (5.9 S)  B  171Os α decay (8.3 S)
  C  171Os α decay (790 MS)  D  142Nd(30Si,5nγ)
  E  147Sm(24Mg,4nγ) 

General Comments:

1987ScZL: 167W produced and identified in Cs,Ba,La,Pr(36Ar,X), (40Ar,X) reactions, through cross-bombardments, excitation functions, and coincidences with x rays. In 1989Me02, 167W produced in 136Ba(36Ar,xn),E=191 MeV reaction, and half-life measured

2019Mi12: theoretical calculations of band-crossing frequencies of the first (AB) and the second (βc) i13/2 neutron alignments

Levels: Band assignments are proposed by 1992Th06, unless otherwise stated

Levels: Quasiparticle nomenclature for orbitals:

Levels: α: first νi13/2,α=+1/2

Levels: B: first νi13/2,α=-1/2

Levels: C: second νi13/2,α=+1/2

Levels: d: second νi13/2,α=-1/2

Levels: E: lowest negative-parity neutron orbital,α=-1/2

Levels: F: lowest negative-parity neutron orbital,α=+1/2

Q-value: Estimated uncertainty for Q(β-)=40 keV (2021Wa16)

Q-value: S(2n)=19370 30, S(2p)=5040 30, Q(εp)=4480 30, Q(ε)=6260 30 (2021Wa16)

Q-value: Q(α)=4671 13 or 4659 20, respectively, from Eα=4559 13 (1991Me05) or 4550 20 (1989Me02), if g.s. to g.s. transition in the decay of 167W to 163Hf










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB D  (5/2-) 19.9 s 5 
% ε = 99.96 1
% α = 0.04 1
     
    79.2 3 AB D  (7/2-)       79.2 3 
  100
M1
     0.0
(5/2-)
   127.1 17   CDE (13/2+)        
   134.20 30  B    (9/2-)      134.2 3 
  100
E2
     0.0
(5/2-)
   215.8 4 A  D  (9/2-)      136.6 2 
  100
[M1,E2]
    79.2
(7/2-)
   351.8 17    DE (17/2+) 139 ps 10     224.7 2 
  100
E2
   127.1
(13/2+)
   553.5 6    D  (13/2-)      337.7 5 
  100

   215.8
(9/2-)
   757.1 17    DE (21/2+) 7.0 ps 9     405.3 2 
  100
E2
   351.8
(17/2+)
  1023.4 8    D  (17/2-)      469.9 5 
  100
(E2)
   553.5
(13/2-)
  1296.0 17    DE (25/2+) 1.8 ps 6     538.9 2 
  100
E2
   757.1
(21/2+)
  1527.3 9    D  (21/2-)      503.9 5 
  100
(E2)
  1023.4
(17/2-)
  1598.9 12    D  (21/2-)      575.4 10 
  100
(E2)
  1023.4
(17/2-)
  1782.6 17    DE (23/2-)      487.2 10 
  1025.7 5 
   50 20 
  100 7 

D
  1296.0
   757.1
(25/2+)
(21/2+)
  1920.6 14    D  (25/2-)      393.3 10 
  100
(E2)
  1527.3
(21/2-)
  1932.7 17    DE (29/2+)      636.7 2 
  100
(E2)
  1296.0
(25/2+)
  2093.8 12    D  (25/2-)      494.9 10 
   566.6 10 
  100 23 
   72 25 
(E2)
(E2)
  1598.9
  1527.3
(21/2-)
(21/2-)
  2105.1 17    DE (27/2-)      322.8 5 
   809.1 2 
   39 8 
  100 12 
(E2)
D
  1782.6
  1296.0
(23/2-)
(25/2+)
  2408.0 15    D  (29/2-)      487.4 5 
  100
(E2)
  1920.6
(25/2-)
  2428.3 16    D  (29/2-)      323.4 10 
   334.5 10 
   44 20 
  100 16 

(E2)
  2105.1
  2093.8
(27/2-)
(25/2-)
  2479.4 17    DE (31/2-)      374.3 2 
   546.6 5 
  100 5 
   37 6 
(E2)
D
  2105.1
  1932.7
(27/2-)
(29/2+)
  2629.1 17    DE (33/2+)      696.4 2 
  100
(E2)
  1932.7
(29/2+)
  2822.0 16    D  (33/2-)      342.6 10 
   393.7 5 
   17 3 
  100 16 

(E2)
  2479.4
  2428.3
(31/2-)
(29/2-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  2937.1 17    DE (35/2-)      457.7 2 
  100
(E2)
  2479.4
(31/2-)
  2960.5 15    D  (33/2-)      552.5 5 
  100

  2408.0
(29/2-)
  3313.6 17    D  (37/2-)      376.3 10 
   491.7 5 
  ≈12
  100 8 

(E2)
  2937.1
  2822.0
(35/2-)
(33/2-)
  3331.2 17    DE (37/2+)      702.1 2 
  100
(E2)
  2629.1
(33/2+)
  3509.3 17    DE (39/2-)      572.2 2 
  100
(E2)
  2937.1
(35/2-)
  3557.0 16    D  (37/2-)      596.5 5 
  100
(E2)
  2960.5
(33/2-)
  3908.0 18    D  (41/2-)      594.4 5 
  100
(E2)
  3313.6
(37/2-)
  3983.5 18    DE (41/2+)      652.3 2 
  100
(E2)
  3331.2
(37/2+)
  4197.2 18    DE (43/2-)      687.9 5 
  100
(E2)
  3509.3
(39/2-)
  4213.4 19    D  (41/2-)      656.4 10 
  100
(E2)
  3557.0
(37/2-)
  4602.3 18    D  (45/2-)      694.3 5 
  100
(E2)
  3908.0
(41/2-)
  4627.0 18    DE (45/2+)      643.5 4 
  100
(E2)
  3983.5
(41/2+)
  4934.1 22    D  (45/2-)      720.7 10 
  100
(E2)
  4213.4
(41/2-)
  4983.4 18    DE (47/2-)      786.2 4 
  100
(E2)
  4197.2
(43/2-)
  5310.6 18    DE (49/2+)      683.6 4 
  100

  4627.0
(45/2+)
  5385.5 21    D  (49/2-)      783.2 10 
  100
(E2)
  4602.3
(45/2-)
  5700.9 24    D  (49/2-)      766.8 10 
  100

  4934.1
(45/2-)
  5848.3 21    D  (51/2-)      864.9 10 
  100
(E2)
  4983.4
(47/2-)
  6052.8 19    DE (53/2+)      742.2 5 
  100
(E2)
  5310.6
(49/2+)
  6242.1 23    D  (53/2-)      856.6 10 
  100
(E2)
  5385.5
(49/2-)
  6499.6 26    D  (53/2-)      798.7 10 
  100

  5700.9
(49/2-)
  6763.7 23    D  (55/2-)      915.4 10 
  100

  5848.3
(51/2-)
  6859.7 22    D  (57/2+)      806.9 10 
  100
(E2)
  6052.8
(53/2+)
  7153.4 25    D  (57/2-)      911.3 10 
  100

  6242.1
(53/2-)
  7334.3 28 ?   D  (57/2-)      834.7 10 ?
  100

  6499.6
(53/2-)
  7693.6 25    D  (59/2-)      929.9 10 
  100

  6763.7
(55/2-)
  7730.4 24    D  (61/2+)      870.7 10 
  100
(E2)
  6859.7
(57/2+)
  8108.6 27    D  (61/2-)      955.2 10 
  100

  7153.4
(57/2-)
  8660.4 26    D  (65/2+)      930.0 10 
  100

  7730.4
(61/2+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  9661.8 28 ?   D  (69/2+)     1001.4 10 ?
  100

  8660.4
(65/2+)

E(level): From a least-squares fit to Eγ data, however, most levels in the level scheme decay by single transitions. In addition, absolute level energies and their uncertainties are unknown

Jπ(level): From multipolarities and ΔJ deduced from γγ(θ)(DCO) ratios and γ(θ) in 142Nd(30Si,5nγ) and 147Sm(24Mg,4nγ), band structure and systematics of known structures in heavier isotopes and isotones. See (24Mg,4nγ) data set for additional details.

T1/2(level): From 2016Li49 for excited states, using recoil-distance Doppler-shift (RDDS) method, uncertainty is statistical only. See 142Nd(30Si,5nγ) dataset.

E(γ): From 142Nd(30Si,5nγ), except as noted.

I(γ): Relative photon branching from 142Nd(30Si,5nγ), except as noted.

M(γ): From DCO ratio in (30Si,5nγ) and/or γ(θ) in (24Mg,4nγ). Stretched quadrupole intraband transitions with mult=Q or (Q) in reaction datasets are assigned here as ΔJ=2, (E2)

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Band α, νi13/2,α=+1/2.
   127.1 17  (13/2+)        
   351.8 17  (17/2+) 139 ps 10     224.7 2 
  100
E2
   127.1
(13/2+)
   757.1 17  (21/2+) 7.0 ps 9       
  1296.0 17  (25/2+) 1.8 ps 6     538.9 2 
  100
E2
   757.1
(21/2+)
  1932.7 17  (29/2+)      636.7 2 
  100
(E2)
  1296.0
(25/2+)
  2629.1 17  (33/2+)      696.4 2 
  100
(E2)
  1932.7
(29/2+)
  3331.2 17  (37/2+)      702.1 2 
  100
(E2)
  2629.1
(33/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band ABC,α=+1/2.
  3983.5 18  (41/2+)        
  4627.0 18  (45/2+)      643.5 4 
  100
(E2)
  3983.5
(41/2+)
  5310.6 18  (49/2+)        
  6052.8 19  (53/2+)      742.2 5 
  100
(E2)
  5310.6
(49/2+)
  6859.7 22  (57/2+)      806.9 10 
  100
(E2)
  6052.8
(53/2+)
  7730.4 24  (61/2+)      870.7 10 
  100
(E2)
  6859.7
(57/2+)
  8660.4 26  (65/2+)      930.0 10 
  100

  7730.4
(61/2+)
  9661.8 28  (69/2+)     1001.4 10 ?
  100

  8660.4
(65/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band FAB,α=-1/2.
  1782.6 17  (23/2-)        
  2105.1 17  (27/2-)      322.8 5 
   809.1 2 
   39 8 
  100 12 
(E2)
D
  1782.6
  1296.0
(23/2-)
(25/2+)
  2479.4 17  (31/2-)        
  2937.1 17  (35/2-)      457.7 2 
  100
(E2)
  2479.4
(31/2-)
  3509.3 17  (39/2-)      572.2 2 
  100
(E2)
  2937.1
(35/2-)
  4197.2 18  (43/2-)      687.9 5 
  100
(E2)
  3509.3
(39/2-)
  4983.4 18  (47/2-)      786.2 4 
  100
(E2)
  4197.2
(43/2-)
  5848.3 21  (51/2-)      864.9 10 
  100
(E2)
  4983.4
(47/2-)
  6763.7 23  (55/2-)      915.4 10 
  100

  5848.3
(51/2-)
  7693.6 25  (59/2-)      929.9 10 
  100

  6763.7
(55/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Band EAB,α=+1/2.
  2093.8 12  (25/2-)        
  2428.3 16  (29/2-)      323.4 10 
   334.5 10 
   44 20 
  100 16 

(E2)
  2105.1
  2093.8
(27/2-)
(25/2-)
  2822.0 16  (33/2-)        
  3313.6 17  (37/2-)      376.3 10 
   491.7 5 
  ≈12
  100 8 

(E2)
  2937.1
  2822.0
(35/2-)
(33/2-)
  3908.0 18  (41/2-)      594.4 5 
  100
(E2)
  3313.6
(37/2-)
  4602.3 18  (45/2-)      694.3 5 
  100
(E2)
  3908.0
(41/2-)
  5385.5 21  (49/2-)      783.2 10 
  100
(E2)
  4602.3
(45/2-)
  6242.1 23  (53/2-)      856.6 10 
  100
(E2)
  5385.5
(49/2-)
  7153.4 25  (57/2-)      911.3 10 
  100

  6242.1
(53/2-)
  8108.6 27  (61/2-)      955.2 10 
  100

  7153.4
(57/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - Band E,α=+1/2.
   215.8 4  (9/2-)        
   553.5 6  (13/2-)      337.7 5 
  100

   215.8
(9/2-)
  1023.4 8  (17/2-)        
  1598.9 12  (21/2-)      575.4 10 
  100
(E2)
  1023.4
(17/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 6 - α=+1/2 band.
  1527.3 9  (21/2-)        
  1920.6 14  (25/2-)      393.3 10 
  100
(E2)
  1527.3
(21/2-)
  2408.0 15  (29/2-)        
  2960.5 15  (33/2-)      552.5 5 
  100

  2408.0
(29/2-)
  3557.0 16  (37/2-)      596.5 5 
  100
(E2)
  2960.5
(33/2-)
  4213.4 19  (41/2-)      656.4 10 
  100
(E2)
  3557.0
(37/2-)
  4934.1 22  (45/2-)      720.7 10 
  100
(E2)
  4213.4
(41/2-)
  5700.9 24  (49/2-)      766.8 10 
  100

  4934.1
(45/2-)
  6499.6 26  (53/2-)      798.7 10 
  100

  5700.9
(49/2-)
  7334.3 28  (57/2-)      834.7 10 ?
  100

  6499.6
(53/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 7 - Possible ν5/2[523] band.
     0.0 (5/2-) 19.9 s 5 
% ε = 99.96 1
% α = 0.04 1
     
    79.2 3  (7/2-)       79.2 3 
  100
M1
     0.0
(5/2-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    79.2 (7/2-)       79.2 3 M19.3α=9.3 4
   134.20 (9/2-)      134.2 3 E21.261α=1.261 12
   215.8 (9/2-)      136.6 2 [M1,E2]1.6α=1.6 4
   351.8 (17/2+) 139 ps 10     224.7 2 E20.210B(E2)(W.u.)=108 9, α=0.210 3
   757.1 (21/2+) 7.0 ps 9     405.3 2 E20.0362B(E2)(W.u.)=131 17, α=0.0362 5
  1296.0 (25/2+) 1.8 ps 6     538.9 2 E20.0175B(E2)(W.u.)=120 40, α=0.0175 3

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(5/2-) 19.9 s 5 
% ε = 99.96 1
% α = 0.04 1
E(level): Possible ν5/2[523] band.
    79.2(7/2-)   E(level): Possible ν5/2[523] band.
   127.1(13/2+)   This level could be an isomer decaying by E3 transition to the 79, (7/2-), with T1/2>1 μs from systematic trend (2021Ko07).
E(level): Band α, νi13/2,α=+1/2.
   215.8(9/2-)   E(level): Band E,α=+1/2.
   351.8(17/2+) 139 ps 10  Transition quadrupole moment Q(t)=4.4 2 (2016Li49).
E(level): Band α, νi13/2,α=+1/2.
   553.5(13/2-)   E(level): Band E,α=+1/2.
   757.1(21/2+) 7.0 ps 9  Transition quadrupole moment Q(t)=4.7 3 (2016Li49).
E(level): Band α, νi13/2,α=+1/2.
  1023.4(17/2-)   E(level): Band E,α=+1/2.
  1296.0(25/2+) 1.8 ps 6  Transition quadrupole moment Q(t)=4.5 7 (2016Li49).
E(level): Band α, νi13/2,α=+1/2.
  1527.3(21/2-)   E(level): α=+1/2 band.
  1598.9(21/2-)   E(level): Band E,α=+1/2.
  1782.6(23/2-)   E(level): Band FAB,α=-1/2.
  1920.6(25/2-)   E(level): α=+1/2 band.
  1932.7(29/2+)   E(level): Band α, νi13/2,α=+1/2.
  2093.8(25/2-)   E(level): Band EAB,α=+1/2.
  2105.1(27/2-)   E(level): Band FAB,α=-1/2.
  2408.0(29/2-)   E(level): α=+1/2 band.
  2428.3(29/2-)   E(level): Band EAB,α=+1/2.
  2479.4(31/2-)   E(level): Band FAB,α=-1/2.
  2629.1(33/2+)   E(level): Band α, νi13/2,α=+1/2.
  2822.0(33/2-)   E(level): Band EAB,α=+1/2.
  2937.1(35/2-)   E(level): Band FAB,α=-1/2.
  2960.5(33/2-)   E(level): α=+1/2 band.
  3313.6(37/2-)   E(level): Band EAB,α=+1/2.
  3331.2(37/2+)   E(level): Band α, νi13/2,α=+1/2.
E(level)Jπ(level)T1/2(level)Comments
  3509.3(39/2-)   E(level): Band FAB,α=-1/2.
  3557.0(37/2-)   E(level): α=+1/2 band.
  3908.0(41/2-)   E(level): Band EAB,α=+1/2.
  3983.5(41/2+)   E(level): Band ABC,α=+1/2.
  4197.2(43/2-)   E(level): Band FAB,α=-1/2.
  4213.4(41/2-)   E(level): α=+1/2 band.
  4602.3(45/2-)   E(level): Band EAB,α=+1/2.
  4627.0(45/2+)   E(level): Band ABC,α=+1/2.
  4934.1(45/2-)   E(level): α=+1/2 band.
  4983.4(47/2-)   E(level): Band FAB,α=-1/2.
  5310.6(49/2+)   E(level): Band ABC,α=+1/2.
  5385.5(49/2-)   E(level): Band EAB,α=+1/2.
  5700.9(49/2-)   E(level): α=+1/2 band.
  5848.3(51/2-)   E(level): Band FAB,α=-1/2.
  6052.8(53/2+)   E(level): Band ABC,α=+1/2.
  6242.1(53/2-)   E(level): Band EAB,α=+1/2.
  6499.6(53/2-)   E(level): α=+1/2 band.
  6763.7(55/2-)   E(level): Band FAB,α=-1/2.
  6859.7(57/2+)   E(level): Band ABC,α=+1/2.
  7153.4(57/2-)   E(level): Band EAB,α=+1/2.
  7334.3(57/2-)   E(level): α=+1/2 band.
  7693.6(59/2-)   E(level): Band FAB,α=-1/2.
  7730.4(61/2+)   E(level): Band ABC,α=+1/2.
  8108.6(61/2-)   E(level): Band EAB,α=+1/2.
  8660.4(65/2+)   E(level): Band ABC,α=+1/2.
E(level)Jπ(level)T1/2(level)Comments
  9661.8(69/2+)   E(level): Band ABC,α=+1/2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    79.2    79.2E(γ): from 171Os α decay
M(γ): from α(K)exp=9.0 11 (2023Zh03) in 171Os α decay (8.3 s)
   134.20   134.2E(γ): from 171Os α decay
M(γ): from α(K)exp=0.39 8 (2023Zh03) in 171Os α decay (8.3 s)
   215.8   136.6E(γ): from 167Re ε decay. Other: 136.4 5 in 142Nd(30Si,5nγ)
   351.8   224.7E(γ): From 147Sm(24Mg,4nγ).
   757.1   405.3E(γ): From 147Sm(24Mg,4nγ).
  1296.0   538.9E(γ): From 147Sm(24Mg,4nγ).
  1782.6  1025.7E(γ): From 147Sm(24Mg,4nγ).
  1932.7   636.7E(γ): From 147Sm(24Mg,4nγ).
  2105.1   322.8E(γ): From 147Sm(24Mg,4nγ).
   809.1E(γ): From 147Sm(24Mg,4nγ).
  2479.4   374.3E(γ): From 147Sm(24Mg,4nγ).
   546.6E(γ): From 147Sm(24Mg,4nγ).
I(γ): weighted average of 32 4 from (30Si,5nγ), 45 5 from (24Mg,4nγ).
  2629.1   696.4E(γ): From 147Sm(24Mg,4nγ).
  2937.1   457.7E(γ): From 147Sm(24Mg,4nγ).
  3331.2   702.1E(γ): From 147Sm(24Mg,4nγ).
  3509.3   572.2E(γ): From 147Sm(24Mg,4nγ).
  3983.5   652.3E(γ): From 147Sm(24Mg,4nγ).
  4197.2   687.9E(γ): From 147Sm(24Mg,4nγ).
  4627.0   643.5E(γ): weighted average from (24Mg,4nγ) and (30Si,5nγ).
  4983.4   786.2E(γ): weighted average from (24Mg,4nγ) and (30Si,5nγ).
  5310.6   683.6E(γ): weighted average from (24Mg,4nγ) and (30Si,5nγ).
  6052.8   742.2E(γ): From 147Sm(24Mg,4nγ).

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