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 SY | S(n)= 8277 keV 21 | S(p)= 3280 keV 30 | Q(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) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | AB 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) | XREF | Jπ(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) | XREF | Jπ(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)
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-) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
79.2 | (7/2-) | 79.2 3 | M1 | 9.3 | α=9.3 4 | |
134.20 | (9/2-) | 134.2 3 | E2 | 1.261 | α=1.261 12 | |
215.8 | (9/2-) | 136.6 2 | [M1,E2] | 1.6 | α=1.6 4 | |
351.8 | (17/2+) | 139 ps 10 | 224.7 2 | E2 | 0.210 | B(E2)(W.u.)=108 9, α=0.210 3 |
757.1 | (21/2+) | 7.0 ps 9 | 405.3 2 | E2 | 0.0362 | B(E2)(W.u.)=131 17, α=0.0362 5 |
1296.0 | (25/2+) | 1.8 ps 6 | 538.9 2 | E2 | 0.0175 | B(E2)(W.u.)=120 40, α=0.0175 3 |
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. |
E(level) | E(gamma) | Comments |
79.2 | 79.2 | E(γ): from 171Os α decay M(γ): from α(K)exp=9.0 11 (2023Zh03) in 171Os α decay (8.3 s) |
134.20 | 134.2 | E(γ): from 171Os α decay M(γ): from α(K)exp=0.39 8 (2023Zh03) in 171Os α decay (8.3 s) |
215.8 | 136.6 | E(γ): from 167Re ε decay. Other: 136.4 5 in 142Nd(30Si,5nγ) |
351.8 | 224.7 | E(γ): From 147Sm(24Mg,4nγ). |
757.1 | 405.3 | E(γ): From 147Sm(24Mg,4nγ). |
1296.0 | 538.9 | E(γ): From 147Sm(24Mg,4nγ). |
1782.6 | 1025.7 | E(γ): From 147Sm(24Mg,4nγ). |
1932.7 | 636.7 | E(γ): From 147Sm(24Mg,4nγ). |
2105.1 | 322.8 | E(γ): From 147Sm(24Mg,4nγ). | 809.1 | E(γ): From 147Sm(24Mg,4nγ). |
2479.4 | 374.3 | E(γ): From 147Sm(24Mg,4nγ). | 546.6 | E(γ): From 147Sm(24Mg,4nγ). I(γ): weighted average of 32 4 from (30Si,5nγ), 45 5 from (24Mg,4nγ). |
2629.1 | 696.4 | E(γ): From 147Sm(24Mg,4nγ). |
2937.1 | 457.7 | E(γ): From 147Sm(24Mg,4nγ). |
3331.2 | 702.1 | E(γ): From 147Sm(24Mg,4nγ). |
3509.3 | 572.2 | E(γ): From 147Sm(24Mg,4nγ). |
3983.5 | 652.3 | E(γ): From 147Sm(24Mg,4nγ). |
4197.2 | 687.9 | E(γ): From 147Sm(24Mg,4nγ). |
4627.0 | 643.5 | E(γ): weighted average from (24Mg,4nγ) and (30Si,5nγ). |
4983.4 | 786.2 | E(γ): weighted average from (24Mg,4nγ) and (30Si,5nγ). |
5310.6 | 683.6 | E(γ): weighted average from (24Mg,4nγ) and (30Si,5nγ). |
6052.8 | 742.2 | E(γ): From 147Sm(24Mg,4nγ). |
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