ADOPTED LEVELS, GAMMAS for 149Nd
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 185, 2 (2022) | Cutoff date: 23-Aug-2022
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=1688.9 keV 25 | S(n)= 5038.79 keV 7 | S(p)= 9129 keV 15 | Q(α)= 270 keV 30 | ||
Reference: 2021WA16 |
References: | |||
A | 149Pr β- decay (2.26 M) | B | 252Cf SF decay |
C | 148Nd(n,γ) E=TH | D | 148Nd(n,γ),(n,n):Resonances |
E | 148Nd(d,p) | F | 148Nd(d,pγ) |
G | 150Nd(p,d) | H | 150Nd(pol d,t),(d,t) |
I | 150Nd(3He,PT) | J | 150Nd(3He,α) |
K | 150Sm(μ-,pγ) | L | 238U(12C,Fγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABC EF HIJKL | 5/2- | 1.726 h 5 % β- = 100 | |||||
108.5206 10 | ABC EF H J L | 7/2- | 0.19 ns 8 | 108.520 1 | 100 | [M1] | 0.0 | 5/2- |
138.4464 8 | A C EF H J | 5/2- | 0.178 ns 38 | 138.447 1 | 100 | [M1] | 0.0 | 5/2- |
165.0868 8 | A C EF H | 1/2-,3/2- | 73 ps 11 | 165.087 1 | 100 | [M1] | 0.0 | 5/2- |
192 2 | H | (11/2-,9/2-) | ||||||
220.7058 23 | ABC EF H J | 9/2- | 1.61 ns 4 | 112.185 2 220.78 5 | 100 7 39 6 | [M1+E2] [E2] | 108.5206 0.0 | 7/2- 5/2- |
258.3302 9 | A C F H | 3/2- | 0.203 ns 8 | 93.243 1 119.885 1 149.790 8 258.327 2 | 7.4 14 10.5 5 1.3 2 100 4 | [M1] [M1+E2] [E2] [M1+E2] | 165.0868 138.4464 108.5206 0.0 | 1/2-,3/2- 5/2- 7/2- 5/2- |
270.8585 23 | ABC F H J L | (9/2+) | 0.42 ns 3 | 162.338 2 | 100 | [E1] | 108.5206 | 7/2- |
285.4819 11 | A C EF H | 1/2- | 126 ps 13 | 120.395 1 147.036 2 285.511 20 | 100 11 4.4 5 10 1 | [M1] [E2] [E2] | 165.0868 138.4464 0.0 | 1/2-,3/2- 5/2- 5/2- |
316.230 3 | A C EF H J | (5/2-,7/2-) | 56 ps 11 | 151.120 20 177.783 10 207.710 3 316.236 10 | 7.5 8 15.4 28 100 5 99 4 | [M1,E2] [M1+E2] [M1+E2] [M1+E2] | 165.0868 138.4464 108.5206 0.0 | 1/2-,3/2- 5/2- 7/2- 5/2- |
321.1429 15 | A C EF H | (5/2-,7/2-) | 74 ps 17 | 156.061 2 182.694 2 212.613 4 321.124 8 | 73 17 58 18 41 2 100 8 | [M1] [M1+E2] [M1+E2] [M1+E2] | 165.0868 138.4464 108.5206 0.0 | 1/2-,3/2- 5/2- 7/2- 5/2- |
332.9326 17 | A C F H | 5/2+ | 14 ps 8 | 194.468 10 224.437 10 332.944 13 | 1.56 13 6.3 6 100 5 | [E1] [E1] [E1] | 138.4464 108.5206 0.0 | 5/2- 7/2- 5/2- |
340.4 10 | EF H J L | (13/2+) | 69.5 | 100 | 270.8585 | (9/2+) | ||
365.9315 15 | A C EF H J | 3/2- | < 0.5 ns | 32.999 1 80.449 2 200.844 5 227.481 6 257.442 20 365.953 8 | ≈19 16.1 17 9.8 10 50 5 5.5 5 100 10 | [E1] [M1+E2] [M1+E2] [M1+E2] [E2] [M1+E2] | 332.9326 285.4819 165.0868 138.4464 108.5206 0.0 | 5/2+ 1/2- 1/2-,3/2- 5/2- 7/2- 5/2- |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
403.7291 14 | A C E H | 1/2- | 23 ps 8 | 118.244 3 145.397 2 238.638 3 265.290 8 403.51 17 | 5.7 5 18.6 19 100 10 41 4 33 5 | [M1] [M1] [M1] [E2] [E2] | 285.4819 258.3302 165.0868 138.4464 0.0 | 1/2- 3/2- 1/2-,3/2- 5/2- 5/2- |
450.04 9 | A H J | 5/2- | ≤ 10 ps | 285.8 1 341.31 5 | 25 5 100 9 | [M1,E2] [M1+E2] | 165.0868 108.5206 | 1/2-,3/2- 7/2- |
459.529 4 | A C E H J | (3/2-,5/2-) | 31 ps 14 | 143.299 2 174.031 18 294.44 4 321.28 10 ? 351.001 20 459.52 11 | 62 7 11 2 57 7 <10 70 11 100 10 | [M1+E2] [M1+E2] [M1+E2] [M1+E2] [M1+E2] [M1+E2] | 316.230 285.4819 165.0868 138.4464 108.5206 0.0 | (5/2-,7/2-) 1/2- 1/2-,3/2- 5/2- 7/2- 5/2- |
474.59 5 | A | (5/2+,7/2) | ≤ 10 ps | 204.15 10 366.02 10 474.57 6 | 14.3 14 50 5 100 6 | 270.8585 108.5206 0.0 | (9/2+) 7/2- 5/2- | |
482.6733 14 | A C EF H | 1/2+ | < 0.8 ns | 78.943 1 116.742 1 197.194 2 224.350 10 317.57 3 | 15 2 92 9 100 10 40 5 15.8 19 | [E1] [E1] [E1] [E1] [E1] | 403.7291 365.9315 285.4819 258.3302 165.0868 | 1/2- 3/2- 1/2- 3/2- 1/2-,3/2- |
511 2 | E H J | 11/2+,13/2+ | ||||||
517.44 4 | A C J | (3/2,5/2,7/2) | 408.92 15 517.44 4 | 12.8 10 100 4 | 108.5206 0.0 | 7/2- 5/2- | ||
548.655 4 | A C EF H J | 3/2- | < 0.5 ns | 215.724 4 227.481 6 383.566 21 410.29 3 548.72 17 | 46 4 100 10 56 17 73 7 15.7 14 | [E1] [M1,E2] [M1+E2] [M1+E2] [M1+E2] | 332.9326 321.1429 165.0868 138.4464 0.0 | 5/2+ (5/2-,7/2-) 1/2-,3/2- 5/2- 5/2- |
571.407 4 | A C H | 3/2+ | 88.731 4 238.453 20 313.088 14 406.400 12 432.95 3 | 2.2 3 23 10 27 9 100 5 80 20 | 482.6733 332.9326 258.3302 165.0868 138.4464 | 1/2+ 5/2+ 3/2- 1/2-,3/2- 5/2- | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
587.7 15 | L | (17/2+) | 247.3 | | 340.4 | (13/2+) | ||
590 10 | J | (9/2-,11/2-) | ||||||
593.22 4 | A E H | (5/2+) | 260.10 9 322.40 4 | 79 15 100 15 | 332.9326 270.8585 | 5/2+ (9/2+) | ||
603.42 8 | A | 494.90 8 | 100 | 108.5206 | 7/2- | |||
612 2 | H | (9/2-,11/2,13/2+) | ||||||
646 2 | H J | 11/2-,9/2- | ||||||
689 2 | H | |||||||
705.128 25 | A C E H J | (3/2,5/2) | 245.588 25 389.00 10 540.1 3 566.85 16 | 84 8 100 11 92 15 69 6 | 459.529 316.230 165.0868 138.4464 | (3/2-,5/2-) (5/2-,7/2-) 1/2-,3/2- 5/2- | ||
709.045 18 | A C E H J | (3/2,5/2-) | 249.51 5 305.325 22 375.95 8 387.93 12 450.72 5 545.3 5 ? 570.72 10 | 10.5 12 34 4 27.0 23 30 5 82 10 10 4 100 10 | 459.529 403.7291 332.9326 321.1429 258.3302 165.0868 138.4464 | (3/2-,5/2-) 1/2- 5/2+ (5/2-,7/2-) 3/2- 1/2-,3/2- 5/2- | ||
741.06 8 | A C E H J | 3/2+ | 455.55 20 576.03 12 | 21.8 23 100 9 | 285.4819 165.0868 | 1/2- 1/2-,3/2- | ||
796 2 | E H | 1/2+ | ||||||
804 2 | H | |||||||
814.40 3 | A C H J | 1/2+ | 354.89 4 528.91 10 649.22 16 675.90 7 | 29 3 100 9 17 3 191 15 | [M2] | 459.529 285.4819 165.0868 138.4464 | (3/2-,5/2-) 1/2- 1/2-,3/2- 5/2- | |
836 2 | E H J | 1/2-,3/2- | ||||||
862.81 7 | A H J | (7/2)+ | 592.1 2 642.03 8 724.7 2 | 53 13 100 23 63 15 | 270.8585 220.7058 138.4464 | (9/2+) 9/2- 5/2- | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
881.36 7 | A C E H J | 3/2+ | 622.97 10 716.5 3 742.94 10 | 100 8 19 9 78 8 | 258.3302 165.0868 138.4464 | 3/2- 1/2-,3/2- 5/2- | ||
913.57 8 | C E H | (1/2,3/2) | 430.76 15 | 100 | 482.6733 | 1/2+ | ||
920.65 7 | A E H J | (3/2,5/2,7/2-) | 604.07 14 662.45 9 755.81 15 781.99 15 | 67 3 100 7 47 7 72 11 | 316.230 258.3302 165.0868 138.4464 | (5/2-,7/2-) 3/2- 1/2-,3/2- 5/2- | ||
956 2 | E H J | 5/2-,7/2- | ||||||
963 4 | H J | |||||||
976.4 18 | L | (21/2+) | 388.7 | | 587.7 | (17/2+) | ||
985.15 10 | E H J | 1/2+ | 436.5 1 820 1 | | 548.655 165.0868 | 3/2- 1/2-,3/2- | ||
1012.6 3 ? | A | 874.11 26 ? | 100 | 138.4464 | 5/2- | |||
1025 2 | E H | 3/2-,1/2- | ||||||
1045 2 | H J | 3/2+,5/2+ | ||||||
1067 2 | E H | |||||||
1082 2 | E H | |||||||
1129 2 | H J | 5/2+,3/2+ | ||||||
1149 2 | H J | 3/2+,5/2+ | ||||||
1168 4 | H | |||||||
1178 2 | E H | |||||||
1189 4 | E H | |||||||
1220 2 | H | |||||||
1232 2 | H | |||||||
1245 2 | E H J | 1/2-,3/2- | ||||||
1283 2 | E H | 1/2- | ||||||
1305.7 18 | L | (19/2-) | 718 | | 587.7 | (17/2+) | ||
1311 4 | H | |||||||
1358 2 | E HI | 1/2+ | ||||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1386 6 | E | |||||||
1413 6 | E H | |||||||
1446 6 | E | |||||||
1465 2 | H | |||||||
1469.0 20 | L | (25/2+) | 492.6 | | 976.4 | (21/2+) | ||
1481 2 | E H | |||||||
1505 2 | E H | 1/2-,3/2- | ||||||
1531 2 | E H | 1/2-,3/2- | ||||||
1553 2 | E H J | 1/2-,3/2- | ||||||
1594 6 | E | |||||||
1622 2 | E H J | 9/2-,11/2- | ||||||
1634 6 | E | |||||||
1682 5 | E H | |||||||
1683.4 20 | L | (23/2-) | 707 | | 976.4 | (21/2+) | ||
1708 2 | E H J | 9/2-,11/2- | ||||||
1721 5 | H | 3/2+,5/2+ | ||||||
1742 5 | E H | 3/2+,5/2+ | ||||||
1785 5 | E H | 3/2+,5/2+ | ||||||
1797 2 | H J | 3/2+,5/2+ | ||||||
1819 5 | E H | |||||||
1857 5 | E H J | 3/2+,5/2+ | ||||||
1868 6 | E J | |||||||
1884 5 | E H J | |||||||
1913 5 | H | |||||||
1925 6 | E | |||||||
1953 5 | E H | 3/2+,5/2+ | ||||||
1981 5 | H J | 3/2+,5/2+ | ||||||
2031 5 | H | 3/2+,5/2+ | ||||||
2040.4 23 | L | (29/2+) | 571.4 | | 1469.0 | (25/2+) | ||
2054 5 | H | |||||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2065 6 | H | |||||||
2081.0 23 | L | (27/2-) | 612 | | 1469.0 | (25/2+) | ||
2081 5 | H | 3/2+,5/2+ | ||||||
2099 5 | E H | |||||||
2121 5 | H | |||||||
2147 5 | E H | |||||||
2231 5 | H | 3/2+,5/2+ | ||||||
2266 5 | H | |||||||
2297 5 | H | 3/2+,5/2+ | ||||||
2321 10 | J | |||||||
2595.4 25 | L | (31/2-) | 555 | | 2040.4 | (29/2+) | ||
2650.4 25 | L | 610 | | 2040.4 | (29/2+) | |||
2672.2 25 | L | (33/2+) | 631.8 | | 2040.4 | (29/2+) | ||
3179 3 | L | (35/2-) | 507 | | 2672.2 | (33/2+) | ||
3345 3 | L | (37/2+) | 672.9 | | 2672.2 | (33/2+) | ||
4018 3 | L | (41/2+) | 673.1 | | 3345 | (37/2+) | ||
4646 3 | L | (45/2+) | 627.6 | | 4018 | (41/2+) | ||
5038.82 3 S | C | 1/2+ | 4125.13 9 4224.33 8 4297.73 10 4329.74 7 4467.28 8 4556.07 9 4634.98 8 4672.82 7 4753.26 7 4780.43 10 4873.68 8 | 4.7 5 5.6 6 2.12 25 11.6 11 2.99 25 2.62 25 4.0 4 100.0 10 20.2 20 2.00 25 6.6 6 | 913.57 814.40 741.06 709.045 571.407 482.6733 403.7291 365.9315 285.4819 258.3302 165.0868 | (1/2,3/2) 1/2+ 3/2+ (3/2,5/2-) 3/2+ 1/2+ 1/2- 3/2- 1/2- 3/2- 1/2-,3/2- |
E(level): From a least-squares fit to Eγ data for levels populated in γ-ray studies, assuming 1 keV uncertainty when not stated. Uncertainties of five Eγ values were doubled to obtain an acceptable reduced χ2=2.1 in place of original 3.8, as compared to critical χ2=3.8. For levels populated only in particle-transfer studies, the energies are from (d,t), due to better energy resolution in this reaction. Exceptions are noted. α few levels are populated only in (d,p) and/or (3He,α)
Jπ(level): All L-transfers are from 0+ targets
E(γ): From (n,γ) for low-spin (J|<9/2) levels, unless otherwise stated. For high-spin (J>9/2) levels, values are from 238U(12C,Fγ).
I(γ): From weighted averages of values from (n,γ) and β- decay, when a level and gamma are seen in both the studies, unless otherwise indicated
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Band based on νi13/2. | |||||||
340.4 10 | (13/2+) | ||||||
587.7 15 | (17/2+) | 247.3 | | 340.4 | (13/2+) | ||
976.4 18 | (21/2+) | 388.7 | | 587.7 | (17/2+) | ||
1469.0 20 | (25/2+) | 492.6 | | 976.4 | (21/2+) | ||
2040.4 23 | (29/2+) | ||||||
2672.2 25 | (33/2+) | 631.8 | | 2040.4 | (29/2+) | ||
3345 3 | (37/2+) | 672.9 | | 2672.2 | (33/2+) | ||
4018 3 | (41/2+) | 673.1 | | 3345 | (37/2+) | ||
4646 3 | (45/2+) | 627.6 | | 4018 | (41/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - Possible νi13/2~#3- octupole band. | |||||||
1305.7 18 | (19/2-) | ||||||
1683.4 20 | (23/2-) | 707 | | 976.4 | (21/2+) | ||
2081.0 23 | (27/2-) | 612 | | 1469.0 | (25/2+) | ||
2595.4 25 | (31/2-) | 555 | | 2040.4 | (29/2+) | ||
3179 3 | (35/2-) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
108.5206 | 7/2- | 0.19 ns 8 | 108.520 1 | [M1] | 1.121 | B(M1)(W.u.)=0.043 +31-13, α=1.121 16 |
138.4464 | 5/2- | 0.178 ns 38 | 138.447 1 | [M1] | 0.563 | B(M1)(W.u.)=0.030 +8-5, α=0.563 8 |
165.0868 | 1/2-,3/2- | 73 ps 11 | 165.087 1 | [M1] | 0.344 | B(M1)(W.u.)=0.050 +9-7, α=0.344 5 |
220.7058 | 9/2- | 1.61 ns 4 | 112.185 2 | [M1+E2] | 1.24 | α=1.24 22 |
9/2- | 1.61 ns 4 | 220.78 5 | [E2] | 0.1409 | B(E2)(W.u.)=2.07 +36-33, α=0.1409 20 | |
258.3302 | 3/2- | 0.203 ns 8 | 93.243 1 | [M1] | 1.730 | B(M1)(W.u.)=0.0065 11, α=1.730 24 |
3/2- | 0.203 ns 8 | 119.885 1 | [M1+E2] | 1.00 | α=1.00 15 | |
3/2- | 0.203 ns 8 | 149.790 8 | [E2] | 0.526 | B(E2)(W.u.)=6.7 11, α=0.526 7 | |
3/2- | 0.203 ns 8 | 258.327 2 | [M1+E2] | 0.093 | α=0.093 9 | |
270.8585 | (9/2+) | 0.42 ns 3 | 162.338 2 | [E1] | 0.0689 | B(E1)(W.u.)=1.25E-4 9, α=0.0689 10 |
285.4819 | 1/2- | 126 ps 13 | 120.395 1 | [M1] | 0.835 | B(M1)(W.u.)=0.050 +6-5, α=0.835 12 |
1/2- | 126 ps 13 | 147.036 2 | [E2] | 0.561 | B(E2)(W.u.)=31 +6-5, α=0.561 8 | |
1/2- | 126 ps 13 | 285.511 20 | [E2] | 0.0612 | B(E2)(W.u.)=2.51 +48-40, α=0.0612 9 | |
316.230 | (5/2-,7/2-) | 56 ps 11 | 151.120 20 | [M1,E2] | 0.475 | α=0.475 35 |
(5/2-,7/2-) | 56 ps 11 | 177.783 10 | [M1+E2] | 0.286 | α=0.286 7 | |
(5/2-,7/2-) | 56 ps 11 | 207.710 3 | [M1+E2] | 0.178 | α=0.178 6 | |
(5/2-,7/2-) | 56 ps 11 | 316.236 10 | [M1+E2] | 0.052 | α=0.052 8 | |
321.1429 | (5/2-,7/2-) | 74 ps 17 | 156.061 2 | [M1] | 0.403 | B(M1)(W.u.)=0.017 +6-5, α=0.403 6 |
(5/2-,7/2-) | 74 ps 17 | 182.694 2 | [M1+E2] | 0.263 | α=0.263 5 | |
(5/2-,7/2-) | 74 ps 17 | 212.613 4 | [M1+E2] | 0.166 | α=0.166 7 | |
(5/2-,7/2-) | 74 ps 17 | 321.124 8 | [M1+E2] | 0.050 | α=0.050 7 | |
332.9326 | 5/2+ | 14 ps 8 | 194.468 10 | [E1] | 0.0423 | B(E1)(W.u.)=3.3E-5 +33-13, α=0.0423 6 |
5/2+ | 14 ps 8 | 224.437 10 | [E1] | 0.0288 | B(E1)(W.u.)=9E-5 +9-3, α=0.0288 4 | |
5/2+ | 14 ps 8 | 332.944 13 | [E1] | 0.01042 | B(E1)(W.u.)=0.00043 +41-16, α=0.01042 15 | |
365.9315 | 3/2- | < 0.5 ns | 32.999 1 | [E1] | 0.916 | B(E1)(W.u.)>4.0E-4, α=0.916 13 |
3/2- | < 0.5 ns | 80.449 2 | [M1+E2] | 3.7 | α=3.7 11 | |
3/2- | < 0.5 ns | 200.844 5 | [M1+E2] | 0.197 | α=0.197 5 | |
3/2- | < 0.5 ns | 227.481 6 | [M1+E2] | 0.135 | α=0.135 8 | |
3/2- | < 0.5 ns | 257.442 20 | [E2] | 0.0852 | B(E2)(W.u.)>0.3, α=0.0852 12 | |
3/2- | < 0.5 ns | 365.953 8 | [M1+E2] | 0.035 | α=0.035 6 | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
403.7291 | 1/2- | 23 ps 8 | 118.244 3 | [M1] | 0.879 | B(M1)(W.u.)=0.014 +8-4, α=0.879 12 |
1/2- | 23 ps 8 | 145.397 2 | [M1] | 0.491 | B(M1)(W.u.)=0.025 +13-7, α=0.491 7 | |
1/2- | 23 ps 8 | 238.638 3 | [M1] | 0.1258 | B(M1)(W.u.)=0.031 +15-8, α=0.1258 18 | |
1/2- | 23 ps 8 | 265.290 8 | [E2] | 0.0774 | B(E2)(W.u.)=72 +37-20, α=0.0774 11 | |
1/2- | 23 ps 8 | 403.51 17 | [E2] | 0.02143 | B(E2)(W.u.)=7.1 +37-21, α=0.02143 30 | |
450.04 | 5/2- | ≤ 10 ps | 285.8 1 | [M1,E2] | 0.069 | α=0.069 8 |
5/2- | ≤ 10 ps | 341.31 5 | [M1+E2] | 0.042 | α=0.042 7 | |
459.529 | (3/2-,5/2-) | 31 ps 14 | 143.299 2 | [M1+E2] | 0.56 | α=0.56 5 |
(3/2-,5/2-) | 31 ps 14 | 174.031 18 | [M1+E2] | 0.306 | α=0.306 9 | |
(3/2-,5/2-) | 31 ps 14 | 294.44 4 | [M1+E2] | 0.064 | α=0.064 8 | |
(3/2-,5/2-) | 31 ps 14 | 321.28 10 | [M1+E2] | 0.050 | α=0.050 7 | |
(3/2-,5/2-) | 31 ps 14 | 351.001 20 | [M1+E2] | 0.039 | α=0.039 6 | |
(3/2-,5/2-) | 31 ps 14 | 459.52 11 | [M1+E2] | 0.019 | α=0.019 4 | |
482.6733 | 1/2+ | < 0.8 ns | 78.943 1 | [E1] | 0.494 | B(E1)(W.u.)>2.5E-5, α=0.494 7 |
1/2+ | < 0.8 ns | 116.742 1 | [E1] | 0.1697 | B(E1)(W.u.)>5.2E-5, α=0.1697 24 | |
1/2+ | < 0.8 ns | 197.194 2 | [E1] | 0.0407 | B(E1)(W.u.)>1.2E-5, α=0.0407 6 | |
1/2+ | < 0.8 ns | 224.350 10 | [E1] | 0.0289 | B(E1)(W.u.)>3.0E-6, α=0.0289 4 | |
1/2+ | < 0.8 ns | 317.57 3 | [E1] | 0.01173 | B(E1)(W.u.)>4.1E-7, α=0.01173 16 | |
548.655 | 3/2- | < 0.5 ns | 215.724 4 | [E1] | 0.0320 | B(E1)(W.u.)>5.9E-6, α=0.0320 4 |
3/2- | < 0.5 ns | 227.481 6 | [M1,E2] | 0.135 | α=0.135 8 | |
3/2- | < 0.5 ns | 383.566 21 | [M1+E2] | 0.030 | α=0.030 6 | |
3/2- | < 0.5 ns | 410.29 3 | [M1+E2] | 0.025 | α=0.025 5 | |
3/2- | < 0.5 ns | 548.72 17 | [M1+E2] | 0.0118 | α=0.0118 27 | |
814.40 | 1/2+ | 675.90 7 | [M2] | 0.02460 | α=0.02460 34 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
340.4 | (13/2+) | E(level): Band based on νi13/2. | |
365.9315 | 3/2- | < 0.5 ns | XREF: J(375). |
450.04 | 5/2- | ≤ 10 ps | XREF: H(447). |
511 | 11/2+,13/2+ | XREF: E(521). | |
587.7 | (17/2+) | E(level): Band based on νi13/2. | |
796 | 1/2+ | XREF: E(807). | |
836 | 1/2-,3/2- | XREF: E(830). | |
976.4 | (21/2+) | E(level): Band based on νi13/2. | |
985.15 | 1/2+ | XREF: E(992). | |
1045 | 3/2+,5/2+ | XREF: J(1054). | |
1245 | 1/2-,3/2- | XREF: J(1260). | |
1305.7 | (19/2-) | E(level): Possible νi13/2~#3- octupole band. | |
1469.0 | (25/2+) | E(level): Band based on νi13/2. | |
1682 | XREF: E(1671). | ||
1683.4 | (23/2-) | E(level): Possible νi13/2~#3- octupole band. | |
1742 | 3/2+,5/2+ | E(level): Weighted average of values from (d,t) and (p,d). | |
1785 | 3/2+,5/2+ | E(level): Weighted average of values from (d,t) and (p,d). | |
1857 | 3/2+,5/2+ | E(level): Weighted average of values from (d,t) and (p,d). | |
1884 | E(level): Weighted average of values from (d,t) and (p,d). | ||
1953 | 3/2+,5/2+ | XREF: E(1947). E(level): Weighted average of values from (d,t) and (p,d). | |
2040.4 | (29/2+) | E(level): Band based on νi13/2. | |
2081.0 | (27/2-) | E(level): Possible νi13/2~#3- octupole band. | |
2099 | E(level): Weighted average of values from (d,t) and (p,d). | ||
2147 | E(level): Weighted average of values from (d,t) and (p,d). | ||
2595.4 | (31/2-) | E(level): Possible νi13/2~#3- octupole band. | |
E(level) | Jπ(level) | T1/2(level) | Comments |
2672.2 | (33/2+) | E(level): Band based on νi13/2. | |
3179 | (35/2-) | E(level): Possible νi13/2~#3- octupole band. | |
3345 | (37/2+) | E(level): Band based on νi13/2. | |
4018 | (41/2+) | E(level): Band based on νi13/2. | |
4646 | (45/2+) | E(level): Band based on νi13/2. |
E(level) | E(gamma) | Comments |
108.5206 | 108.520 | M(γ): Dominant M1 expected from RUL=300 for E2 transitions |
138.4464 | 138.447 | M(γ): Dominant M1 expected from RUL=300 for E2 transitions |
165.0868 | 165.087 | M(γ): Dominant M1 expected from RUL=300 for E2 transitions |
220.7058 | 220.78 | I(γ): weighted average of 40 6 in β- decay and 21 21 (from Iγ<42) in (n,γ) |
258.3302 | 93.243 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement M(γ): Dominant M1 expected from RUL=300 for E2 transitions |
285.4819 | 120.395 | I(γ): From (n,γ) M(γ): Dominant M1 expected from RUL=300 for E2 transitions | 147.036 | I(γ): From (n,γ) | 285.511 | E(γ): γ from (n,γ) only, not reported in β- decay |
316.230 | 177.783 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement |
321.1429 | 156.061 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement M(γ): Dominant M1 expected from RUL=300 for E2 transitions | 182.694 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement |
332.9326 | 194.468 | E(γ): γ from (n,γ) only, not reported in β- decay |
365.9315 | 32.999 | E(γ): γ from (n,γ) only, not reported in β- decay | 80.449 | E(γ): γ from (n,γ) only, not reported in β- decay | 200.844 | E(γ): γ from (n,γ) only, not reported in β- decay | 227.481 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided | 257.442 | E(γ): γ from (n,γ) only, not reported in β- decay |
403.7291 | 118.244 | E(γ): γ from (n,γ) only, not reported in β- decay | 145.397 | I(γ): 100 40 in β- decay is too large. From (n,γ) M(γ): Dominant M1 expected from RUL=300 for E2 transitions | 238.638 | I(γ): From (n,γ) M(γ): Dominant M1 expected from RUL=300 for E2 transitions | 265.290 | I(γ): 118 15 in β- decay is too large. From (n,γ) | 403.51 | I(γ): 95 25 in β- decay is too large. From (n,γ) |
450.04 | 285.8 | E(γ): Poor fit. Level-energy difference=284.96. Uncertainty doubled in the fitting procedure. From 149Pr β- | 341.31 | E(γ): level-energy difference=341.52. Uncertainty doubled in the fitting procedure. From 149Pr β- |
459.529 | 174.031 | I(γ): From (n,γ) | 294.44 | I(γ): From (n,γ) | 321.28 | E(γ): Multiply placed with intensity suitably divided. From 149Pr β- I(γ): Multiply placed with intensity suitably divided |
E(level) | E(gamma) | Comments |
474.59 | 204.15 | E(γ): poor fit. Level-energy difference=203.73. Uncertainty doubled in the fitting procedure. From 149Pr β- | 366.02 | E(γ): From 149Pr β- | 474.57 | E(γ): From 149Pr β- |
482.6733 | 78.943 | E(γ): γ from (n,γ) only, not reported in β- decay | 116.742 | I(γ): From (n,γ) | 197.194 | I(γ): From (n,γ) | 224.350 | E(γ): γ from (n,γ) only, not reported in β- decay | 317.57 | E(γ): γ from (n,γ) only, not reported in β- decay |
548.655 | 227.481 | E(γ): poor fit. Level-energy difference=227.512. Uncertainty doubled in the fitting procedure. Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided | 383.566 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement | 548.72 | E(γ): γ from (n,γ) only, not reported in β- decay |
571.407 | 88.731 | I(γ): From (n,γ) | 238.453 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement | 313.088 | I(γ): Unweighted average of values from (n,γ) and β- decay, when the two values are in poor agreement | 406.400 | E(γ): poor fit. Level-energy difference=406.319. Uncertainty doubled in the fitting procedure |
593.22 | 260.10 | E(γ): From 149Pr β- | 322.40 | E(γ): From 149Pr β- |
603.42 | 494.90 | E(γ): From 149Pr β- |
705.128 | 540.1 | E(γ): From 149Pr β- |
709.045 | 249.51 | E(γ): γ from (n,γ) only, not reported in β- decay | 305.325 | E(γ): γ from (n,γ) only, not reported in β- decay |
741.06 | 455.55 | E(γ): γ from (n,γ) only, not reported in β- decay |
814.40 | 354.89 | E(γ): γ from (n,γ) only, not reported in β- decay |
862.81 | 592.1 | E(γ): From 149Pr β- | 642.03 | E(γ): From 149Pr β- | 724.7 | E(γ): From 149Pr β- |
E(level) | E(gamma) | Comments |
881.36 | 622.97 | E(γ): From 149Pr β- | 716.5 | E(γ): From 149Pr β- | 742.94 | E(γ): From 149Pr β- |
920.65 | 604.07 | E(γ): From 149Pr β- | 662.45 | E(γ): From 149Pr β- | 755.81 | E(γ): From 149Pr β- | 781.99 | E(γ): From 149Pr β- |
985.15 | 436.5 | E(γ): from γγ in (d,tγ) | 820 | E(γ): from γγ in (d,tγ) |
149Nd produced and identified by 1938Po05, 1946Bo25, 1950Ma05 and 1952Ru10, followed by several later studies of its decay
Mass measurement: 1975Ka25
1985Ma39: theory: calculated levels, Jπ, spectroscopic factors using anharmonic vibrator model.
Other theoretical studies: consult the NSR database at www.nndc.bnl.gov/nsr/ for 14 references for structure and two for radioactive decay listed under ’document records’ which can be accessed through web retrieval of the ENSDF database at www.nndc.bnl.gov/ensdf/
Levels: There are 123 neutron resonances in the region of 0.094 to 11.92 keV. Consult 148Nd(n,γ),(n,n):resonances for energies, Jπ, widths and resonance strengths.
Q-value: S(2n)=12371.4 17, S(2p)=16940 9 (2021Wa16)