ADOPTED LEVELS, GAMMAS for 151Er
Author: Balraj Singh | Citation: Nucl. Data Sheets 110, 1 (2009) | Cutoff date: 20-Nov-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-7.49×103 keV 3 | S(n)= 8506 keV 24 | S(p)= 3609 keV 22 | Q(α)= 3505 keV 19 | ||
| S(2n)= 2.067×104 keV 24 | S(2p)= 5148 keV 22 | Q(EC)= 5356 keV 18 | Q(ECp)= 3754 keV 17 | ||
| Reference: 2017WA10 | |||||
| References: | |||
| A | 151Er IT decay (0.58 S) | B | 151Er IT decay (0.42 μs) |
| C | 151Tm ε decay (4.17 S) | D | 151Tm ε decay (6.6 S) |
| E | 155Yb α decay (1.793 S) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDE | (7/2-) | 23.5 s 20 % ε = 100 | |||||
| 801.52 14 | ABC | (9/2-) | 801.6 2 | 100 | 0.0 | (7/2-) | ||
| 984.1 4 | D | (3/2-) | 984.1 4 | 100 | 0.0 | (7/2-) | ||
| 1140.35 14 | ABC | (13/2+) | 10 ns 3 | 338.5 2 1140.2 2 | 1.1 3 100 | (M2) E3 | 801.52 0.0 | (9/2-) (7/2-) |
| 1206.2 6 | D | (1/2-) | 222.1 4 | 100 | [M1,E2] | 984.1 | (3/2-) | |
| 1495.50 19 | A C | (9/2-) | 354.2 6 ? 692.8 7 ? 1495.8 4 | 5.7 18 9.0 8 100 10 | 1140.35 801.52 0.0 | (13/2+) (9/2-) (7/2-) | ||
| 1511.5 3 | C | (3/2-:11/2-) | 1511.5 3 | 100 | 0.0 | (7/2-) | ||
| 1548.55 17 | A C | (11/2-) | 408.3 3 ? 1548.5 3 | 4.3 5 100 10 | 1140.35 0.0 | (13/2+) (7/2-) | ||
| 1683.6 3 | C | (3/2-:11/2-) | 1683.5 4 | 100 | 0.0 | (7/2-) | ||
| 1720.94 16 | A C | (11/2+) | 225.1 2 580.5 2 919.3 2 | 16 3 100 11 17 3 | [E1] (M1) | 1495.50 1140.35 801.52 | (9/2-) (13/2+) (9/2-) | |
| 2032.4 8 ? | D | (1/2,3/2) | 1048.3 6 ? | 100 | 984.1 | (3/2-) | ||
| 2075.25 16 | A C | (13/2+) | 353.8 2 526.8 2 935.0 2 | 20 5 100 5 18 4 | (M1) | 1720.94 1548.55 1140.35 | (11/2+) (11/2-) (13/2+) | |
| 2165.1 4 | C | 1363.6 3 | 100 | 801.52 | (9/2-) | |||
| 2174.4 5 | C | 1372.9 4 | 100 | 801.52 | (9/2-) | |||
| 2212.47 18 | A C | (15/2+) | 136.9 2 718.0 4 ? 1071.3 10 1411.4 2 ? | 75 10 208 21 100 19 177 27 | (M1) | 2075.25 1495.50 1140.35 801.52 | (13/2+) (9/2-) (13/2+) (9/2-) | |
| 2239.63 22 | AB | (17/2+) | 28 1098.9 2 | 100 | [M1] E2 | 2212.47 1140.35 | (15/2+) (13/2+) | |
| 2313.6 10 | C | 2313.6 10 | 100 | 0.0 | (7/2-) | |||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 2329.6 10 | C | 2329.6 10 | 100 | 0.0 | (7/2-) | |||
| 2449.4 4 | C | 765.8 4 2449.5 6 | 42 2 100 10 | 1683.6 0.0 | (3/2-:11/2-) (7/2-) | |||
| 2451.1 6 | C | 2451.1 6 | 100 | 0.0 | (7/2-) | |||
| 2528.3 3 | AB | (21/2+) | 288.7 2 | 100 | E2 | 2239.63 | (17/2+) | |
| 2586.0 5 | AB | (27/2-) | 0.58 s 2 % IT = 95.3 4 % ε = 4.7 4 | 57.7 | 100 | E3 | 2528.3 | (21/2+) |
| 2611.3 4 | C | 1809.8 3 | 100 | 801.52 | (9/2-) | |||
| 2621.5 7 | D | (1/2+,3/2+) | 1637.4 5 | 100 | 984.1 | (3/2-) | ||
| 2776.2 5 | C | 1092.7 4 1635.5 8 | 100 16 110 63 | 1683.6 1140.35 | (3/2-:11/2-) (13/2+) | |||
| 2874.8 4 | C | 1326.2 5 2073.3 6 | 100 10 67 30 | 1548.55 801.52 | (11/2-) (9/2-) | |||
| 2916.6 3 | C | (11/2-,13/2-) | 1368.0 4 1777.1 10 2115.1 3 | 5.6 6 6 2 100 5 | 1548.55 1140.35 801.52 | (11/2-) (13/2+) (9/2-) | ||
| 2921.4 4 | C | 1199.0 10 2120.1 4 2921.7 25 | 14 7 100 6 44 11 | 1720.94 801.52 0.0 | (11/2+) (9/2-) (7/2-) | |||
| 2966.1 21 | D | (1/2+,3/2+) | 1982 2 | 100 | 984.1 | (3/2-) | ||
| 3031.19 22 | C | (11/2-,13/2-) | 818.6 10 956.1 7 1483.0 7 1535.6 3 1890.8 3 2229.7 4 | 13 2 6.1 11 19 5 52 11 73 5 100 16 | 2212.47 2075.25 1548.55 1495.50 1140.35 801.52 | (15/2+) (13/2+) (11/2-) (9/2-) (13/2+) (9/2-) | ||
| 3037.3 3 | C | (9/2-,11/2-) | 1488.5 4 1525.9 4 2236.0 4 3037.5 25 | 60 16 72 16 100 16 64 12 | 1548.55 1511.5 801.52 0.0 | (11/2-) (3/2-:11/2-) (9/2-) (7/2-) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 3051.1 21 | D | (1/2+,3/2+) | 2067 2 | 100 | 984.1 | (3/2-) | ||
| 3094.1 8 | C | 1953.7 7 | 100 | 1140.35 | (13/2+) | |||
| 3110 3 | C | 3110 3 | 100 | 0.0 | (7/2-) | |||
| 3212.5 6 | C | (9/2+,11/2,13/2-) | 2071.7 7 2411.9 10 | 100 40 44 14 | 1140.35 801.52 | (13/2+) (9/2-) | ||
| 3270.5 5 | C | 1549.6 9 1586.5 6 2469.7 9 | 100 10 40 20 21 3 | 1720.94 1683.6 801.52 | (11/2+) (3/2-:11/2-) (9/2-) | |||
| 3288.3 6 | C | 1123.2 4 | 100 | 2165.1 | ||||
| 3341 3 | C | 2539.2 25 | 100 | 801.52 | (9/2-) | |||
| 3685.9 6 | B | (31/2-) | 1099.9 | | E2 | 2586.0 | (27/2-) | |
| 3766.8 8 | C | 850.1 7 | 100 | 2916.6 | (11/2-,13/2-) | |||
| 3901.5 6 | B | (33/2-) | 215.6 | | M1 | 3685.9 | (31/2-) | |
| 4189.8 7 | B | (33/2:37/2-) | 288.3 | | 3901.5 | (33/2-) | ||
| 4455.2 7 | B | (37/2-) | 553.6 | | E2 | 3901.5 | (33/2-) | |
| 4618.1 7 | B | (39/2-) | 162.9 428.3 | | M1 | 4455.2 4189.8 | (37/2-) (33/2:37/2-) | |
| 4752.2 8 | B | (41/2-) | 134.1 | | M1 | 4618.1 | (39/2-) | |
| 5130.1 8 | B | (43/2+) | 378.1 | | E1 | 4752.2 | (41/2-) | |
| 5804.4 8 | B | (41/2:45/2-) | 674.3 1052.0 | | 5130.1 4752.2 | (43/2+) (41/2-) | ||
| 6131.8 8 | B | (45/2+) | 327.4 1001.8 | | M1 | 5804.4 5130.1 | (41/2:45/2-) (43/2+) | |
| 6548.0 9 | B | (47/2-) | 416.1 | | E1 | 6131.8 | (45/2+) | |
| 6664.3 9 | B | (49/2-) | 116.3 532.5 | | M1 | 6548.0 6131.8 | (47/2-) (45/2+) | |
| 6771.8 9 | B | (51/2+,53/2-) | 107.5 | | 6664.3 | (49/2-) | ||
| 7441.3 9 | B | (53/2-) | 777.0 | | E2 | 6664.3 | (49/2-) | |
| 8016.0 9 | B | (55/2+) | 574.7 1244.1 | | E1 | 7441.3 6771.8 | (53/2-) (51/2+,53/2-) | |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 8380.3 10 | B | (57/2+) | 364.3 | | M1 | 8016.0 | (55/2+) | |
| 9046.2 10 | B | (57/2:61/2+) | 665.9 | | 8380.3 | (57/2+) | ||
| 9392.0 10 | B | (61/2+) | 345.8 1011.7 | | E2 | 9046.2 8380.3 | (57/2:61/2+) (57/2+) | |
| 10286.6 10 | B | (67/2-) | 0.42 µs 5 % IT = 100 | 894.6 | | (E3) | 9392.0 | (61/2+) |
E(level): From least-squares fit to Eγ’s, assuming Δ(Eγ)=0.3~keV when not stated
Jπ(level): From shell-model consideration and analogy to 149Dy. For levels populated in 151Tm ε decay (4.17~s), J=9/2, 11/2 or 13/2 from the parent state Jπ=(11/2-). For probable shell-model configurations see 1988Ba02 and 1997Co24
M(γ): From ce data in 151Er IT decay (0.42~μs), some of the assignments are from ce data in 151Er IT decay (0.58~s)
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 1140.35 | (13/2+) | 10 ns 3 | 338.5 2 | (M2) | 0.372 | B(M2)(W.u.)=0.34 14, α=0.372, α(K)=0.301 5, α(L)=0.0555 8, α(M)=0.01266 18, α(N)=0.00296 5, α(O)=0.000423 6, α(P)=2.20×10-5 4, α(N+)=0.00341 5 |
| (13/2+) | 10 ns 3 | 1140.2 2 | E3 | 0.00539 | B(E3)(W.u.)=36 11, α=0.00539, α(K)=0.00440 7, α(L)=0.000771 11, α(M)=0.0001742 25, α(N)=4.04E-5 6, α(O)=5.67E-6 8, α(P)=2.66E-7 4, α(N+)=4.66E-5 7 | |
| 1206.2 | (1/2-) | 222.1 4 | [M1,E2] | 0.24 | α=0.24 7, α(K)=0.19 7, α(L)=0.041 4, α(M)=0.0095 12, α(N)=0.0022 3, α(O)=0.000292 13, α(P)=1.1×10-5 5, α(N+)=0.0025 3 | |
| 1720.94 | (11/2+) | 225.1 2 | [E1] | 0.0382 | α=0.0382 | |
| (11/2+) | 580.5 2 | (M1) | 0.0238 | α=0.0238, α(K)=0.0201 3, α(L)=0.00289 4, α(M)=0.000639 9, α(N)=0.0001491 21, α(O)=2.16×10-5 3, α(P)=1.213E-6 17, α(N+)=0.0001720 25 | ||
| 2075.25 | (13/2+) | 353.8 2 | (M1) | 0.0859 | α=0.0859, α(K)=0.0724 11, α(L)=0.01059 15, α(M)=0.00234 4, α(N)=0.000546 8, α(O)=7.92×10-5 12, α(P)=4.41E-6 7, α(N+)=0.000630 9 | |
| 2212.47 | (15/2+) | 136.9 2 | (M1) | 1.162 | α=1.162, α(K)=0.975 15, α(L)=0.1457 22, α(M)=0.0323 5, α(N)=0.00754 11, α(O)=0.001090 16, α(P)=6.01×10-5 9, α(N+)=0.00869 13 | |
| 2239.63 | (17/2+) | 28 | [M1] | 19.2 | α=19.2, α(L)=14.96 21, α(M)=3.32 5, α(N)=0.774 11, α(O)=0.1117 16, α(P)=0.00612 9, α(N+)=0.892 13 | |
| (17/2+) | 1098.9 2 | E2 | 0.00277 | α=0.00277, α(K)=0.00233 4, α(L)=0.000349 5, α(M)=7.74×10-5 11, α(N)=1.80E-5 3, α(O)=2.56E-6 4, α(P)=1.326E-7 19, α(N+)=2.07E-5 3 | ||
| 2528.3 | (21/2+) | 288.7 2 | E2 | 0.0776 | α=0.0776, α(K)=0.0563 8, α(L)=0.01646 24, α(M)=0.00386 6, α(N)=0.000882 13, α(O)=0.0001129 16, α(P)=2.88×10-6 4, α(N+)=0.000998 15 | |
| 2586.0 | (27/2-) | 0.58 s 2 % IT = 95.3 4 % ε = 4.7 4 | 57.7 | E3 | 1.28×103 | B(E3)(W.u.)=0.54 5, α=1.28×103 |
| 3685.9 | (31/2-) | 1099.9 | E2 | 0.00277 | α=0.00277, α(K)=0.00232 4, α(L)=0.000348 5, α(M)=7.72×10-5 11, α(N)=1.79E-5 3, α(O)=2.56E-6 4, α(P)=1.324E-7 19, α(N+)=2.06E-5 3 | |
| 3901.5 | (33/2-) | 215.6 | M1 | 0.327 | α=0.327, α(K)=0.275 4, α(L)=0.0407 6, α(M)=0.00903 13, α(N)=0.00211 3, α(O)=0.000305 5, α(P)=1.685×10-5 24, α(N+)=0.00243 4 | |
| 4455.2 | (37/2-) | 553.6 | E2 | 0.01271 | α=0.01271, α(K)=0.01023 15, α(L)=0.00193 3, α(M)=0.000438 7, α(N)=0.0001012 15, α(O)=1.382×10-5 20, α(P)=5.71E-7 8, α(N+)=0.0001156 17 | |
| 4618.1 | (39/2-) | 162.9 | M1 | 0.712 | α=0.712, α(K)=0.598 9, α(L)=0.0891 13, α(M)=0.0198 3, α(N)=0.00461 7, α(O)=0.000666 10, α(P)=3.68×10-5 6, α(N+)=0.00531 8 | |
| 4752.2 | (41/2-) | 134.1 | M1 | 1.232 | α=1.232, α(K)=1.034 15, α(L)=0.1545 22, α(M)=0.0343 5, α(N)=0.00799 12, α(O)=0.001156 17, α(P)=6.37×10-5 9, α(N+)=0.00921 13 | |
| 5130.1 | (43/2+) | 378.1 | E1 | 0.01059 | α=0.01059, α(K)=0.00896 13, α(L)=0.001275 18, α(M)=0.000281 4, α(N)=6.50×10-5 10, α(O)=9.20E-6 13, α(P)=4.71E-7 7, α(N+)=7.47E-5 11 | |
| 6131.8 | (45/2+) | 1001.8 | M1 | 0.00614 | α=0.00614, α(K)=0.00520 8, α(L)=0.000734 11, α(M)=0.0001618 23, α(N)=3.77×10-5 6, α(O)=5.49E-6 8, α(P)=3.10E-7 5, α(N+)=4.35E-5 6 | |
| 6548.0 | (47/2-) | 416.1 | E1 | 0.00847 | α=0.00847, α(K)=0.00717 10, α(L)=0.001014 15, α(M)=0.000223 4, α(N)=5.17×10-5 8, α(O)=7.34E-6 11, α(P)=3.80E-7 6, α(N+)=5.94E-5 9 | |
| 6664.3 | (49/2-) | 116.3 | M1 | 1.85 | α=1.85, α(K)=1.550 22, α(L)=0.232 4, α(M)=0.0515 8, α(N)=0.01200 17, α(O)=0.001735 25, α(P)=9.56×10-5 14, α(N+)=0.01384 20 | |
| 7441.3 | (53/2-) | 777.0 | E2 | 0.00575 | α=0.00575, α(K)=0.00475 7, α(L)=0.000780 11, α(M)=0.0001750 25, α(N)=4.05×10-5 6, α(O)=5.67E-6 8, α(P)=2.69E-7 4, α(N+)=4.65E-5 7 | |
| 8016.0 | (55/2+) | 574.7 | E1 | 0.00413 | α=0.00413, α(K)=0.00350 5, α(L)=0.000486 7, α(M)=0.0001069 15, α(N)=2.48×10-5 4, α(O)=3.54E-6 5, α(P)=1.89E-7 3, α(N+)=2.85E-5 4 | |
| 8380.3 | (57/2+) | 364.3 | M1 | 0.0796 | α=0.0796, α(K)=0.0670 10, α(L)=0.00979 14, α(M)=0.00217 3, α(N)=0.000505 7, α(O)=7.32×10-5 11, α(P)=4.08E-6 6, α(N+)=0.000583 9 | |
| 9392.0 | (61/2+) | 1011.7 | E2 | 0.00328 | α=0.00328, α(K)=0.00274 4, α(L)=0.000419 6, α(M)=9.32×10-5 13, α(N)=2.16E-5 3, α(O)=3.07E-6 5, α(P)=1.563E-7 22, α(N+)=2.49E-5 4 | |
| 10286.6 | (67/2-) | 0.42 µs 5 % IT = 100 | 894.6 | (E3) | 0.00957 | α=0.00957, α(K)=0.00761 11, α(L)=0.001520 22, α(M)=0.000348 5, α(N)=8.05×10-5 12, α(O)=1.107E-5 16, α(P)=4.66E-7 7, α(N+)=9.21E-5 13 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 801.52 | (9/2-) | Configuration=νh9/2 (1997Co24). | |
| 1140.35 | (13/2+) | 10 ns 3 | Configuration=(νf7/2~#3-)+νi13/2 (1997Co24). |
| 2032.4 | (1/2,3/2) | Jπ(level): The β transition from (1/2+) parent state is possibly allowed. | |
| 2621.5 | (1/2+,3/2+) | Jπ(level): The β transition from (1/2+) parent state is possibly allowed. | |
| 2966.1 | (1/2+,3/2+) | Jπ(level): The β transition from (1/2+) parent state is possibly allowed. | |
| 3051.1 | (1/2+,3/2+) | Jπ(level): The β transition from (1/2+) parent state is possibly allowed. |
| E(level) | E(gamma) | Comments |
| 1495.50 | 354.2 | E(γ): γ not reported by 1997Co24 in 151Er IT decay (0.58~s) study. 1997Co24 state that some of the γ-transition placements by 1990Ak01 are in conflict with their work. Apparently, the details of work by 1997Co24 are given only in a thesis by R. Collatz, KFA Julich (1994) (reference 8 in 1997Co24). This thesis is not available to the evaluator. | 692.8 | E(γ): γ not reported by 1997Co24 in 151Er IT decay (0.58~s) study. 1997Co24 state that some of the γ-transition placements by 1990Ak01 are in conflict with their work. Apparently, the details of work by 1997Co24 are given only in a thesis by R. Collatz, KFA Julich (1994) (reference 8 in 1997Co24). This thesis is not available to the evaluator. |
| 1548.55 | 408.3 | E(γ): γ not reported by 1997Co24 in 151Er IT decay (0.58~s) study. 1997Co24 state that some of the γ-transition placements by 1990Ak01 are in conflict with their work. Apparently, the details of work by 1997Co24 are given only in a thesis by R. Collatz, KFA Julich (1994) (reference 8 in 1997Co24). This thesis is not available to the evaluator. |
| 2075.25 | 353.8 | I(γ): 88 in 151Er IT decay (0.58~s) | 935.0 | I(γ): 44 in 151Er IT decay (0.58~s) |
| 2212.47 | 718.0 | E(γ): γ not reported by 1997Co24 in 151Er IT decay (0.58~s) study. 1997Co24 state that some of the γ-transition placements by 1990Ak01 are in conflict with their work. Apparently, the details of work by 1997Co24 are given only in a thesis by R. Collatz, KFA Julich (1994) (reference 8 in 1997Co24). This thesis is not available to the evaluator. | 1411.4 | E(γ): γ not reported by 1997Co24 in 151Er IT decay (0.58~s) study. 1997Co24 state that some of the γ-transition placements by 1990Ak01 are in conflict with their work. Apparently, the details of work by 1997Co24 are given only in a thesis by R. Collatz, KFA Julich (1994) (reference 8 in 1997Co24). This thesis is not available to the evaluator. |
| 2586.0 | 57.7 | M(γ): from fitting of observed ce(L) lines with theoretical subshell intensity ratios (1988Ba02) |
Nuclear structure calculations: 2005Od03, 1996Lo01