ADOPTED LEVELS, GAMMAS for 100Sr
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 172, 1 (2021) | Cutoff date: 31-Jan-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=7506 keV 13 | S(n)= 5371 keV 9 | S(p)= 15989 keV 8 | Q(α)= -9166 keV 22 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 100Rb β- decay (52 MS) | B | 101Rb β-n decay (31 MS) |
| C | 248Cm SF decay | D | 252Cf SF decay |
| E | 9Be(238U,Fγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDE | 0+ | 200 ms 2 % β- = 100 % β-n = 1.11 21 | |||||
| 129.18 9 | A CDE | (2+) | 3.91 ns 16 | 129.2 1 | 100 | [E2] | 0.0 | 0+ |
| 416.99 19 | A CDE | (4+) | 287.8 2 | 100 | [E2] | 129.18 | (2+) | |
| 851.8 3 | A CD | (6+) | 434.8 2 | 100 | 416.99 | (4+) | ||
| 937.8 4 | A | (0+) | 808.6 3 | 100 | 129.18 | (2+) | ||
| 1257.05 22 | A | (1,2+) | 1127.8 3 1257.1 3 | 41 5 100 18 | 129.18 0.0 | (2+) 0+ | ||
| 1315.35 23 | A | (1,2+) | 1186.2 3 1315.3 4 | 100 11 61 11 | 129.18 0.0 | (2+) 0+ | ||
| 1326.6 4 | A | 1197.4 4 | 100 | 129.18 | (2+) | |||
| 1414.5 3 | A | (3,4+) | 997.5 4 1285.5 4 | 33 8 100 11 | 416.99 129.18 | (4+) (2+) | ||
| 1418.1 11 | CD | (8+) | 2.13 ps 31 | 566.3 | 100 | [E2] | 851.8 | (6+) |
| 1418.7 4 | A | 1289.5 3 | 100 | 129.18 | (2+) | |||
| 1500.68 23 | A | (3,4+) | 1083.7 3 1371.3 4 | 33 7 100 12 | 416.99 129.18 | (4+) (2+) | ||
| 1521.8 4 | A | 106.4 6 ? 1392.6 3 | 2.1 12 100 12 | 1414.5 129.18 | (3,4+) (2+) | |||
| 1560.4 3 | A | (3,4+) | 1143.4 3 1431.8 5 ? | 100 18 35 24 | 416.99 129.18 | (4+) (2+) | ||
| 1618.71 22 | A E | (4-) | 104 ns 19 | 58.3 2 118.0 2 204.4 3 1201.7 2 | 0.95 24 5.2 10 5.2 10 100 14 | [D,E2] [D,E2] [D,E2] [E1] | 1560.4 1500.68 1414.5 416.99 | (3,4+) (3,4+) (3,4+) (4+) |
| 1648.0 5 | A | 1231.0 4 | 100 | 416.99 | (4+) | |||
| 1745.7 5 | A | 1328.7 4 | 100 | 416.99 | (4+) | |||
| 1780.5 3 | A | (5-) | 161.8 2 | 100 | [M1,E2] | 1618.71 | (4-) | |
| 1956.7 5 | A | (2+,3,4+) | 1539.4 7 1827.8 6 | 100 40 100 50 | 416.99 129.18 | (4+) (2+) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 1974.9 4 | A | (6-) | 194.4 3 ? | 100 | [M1,E2] | 1780.5 | (5-) | |
| 2055.99 23 | A | (1,2+) | 637.4 3 ? 740.7 5 1926.8 3 2055.9 4 | 20 4 11 4 100 11 39 7 | 1418.7 1315.35 129.18 0.0 | (1,2+) (2+) 0+ | ||
| 2108.0 15 | CD | (10+) | 0.80 ps 12 | 689.9 | 100 | [E2] | 1418.1 | (8+) |
| 2115.78 23 | A | (2+) | 702.3 4 ? 1699.0 5 1986.7 4 2115.6 3 | <30 35 11 51 14 100 19 | 1414.5 416.99 129.18 0.0 | (3,4+) (4+) (2+) 0+ | ||
| 2211.52 22 | A | (1,2+) | 2082.2 3 2211.6 3 | 51 10 100 17 | 129.18 0.0 | (2+) 0+ | ||
| 2277.47 22 | A | (1,2+) | 2148.4 3 2277.3 3 | 100 12 24 6 | 129.18 0.0 | (2+) 0+ | ||
| 2482.7 4 | A | 702.3 4 864.0 3 | <40 100 25 | 1780.5 1618.71 | (5-) (4-) | |||
| 2505.9 4 | A | 2376.7 4 ? | 100 | 129.18 | (2+) | |||
| 3097.2 5 | A | (1,2+) | 2967.8 7 3097.3 7 | 71 43 100 36 | 129.18 0.0 | (2+) 0+ | ||
| 3165.0 6 | A | (1,2+) | 3035.9 8 3164.9 8 | 100 28 11 6 | 129.18 0.0 | (2+) 0+ | ||
| 3316.3 6 ? | A | 3187.1 6 ? | 100 | 129.18 | (2+) | |||
| 3346.0 10 | A | 1289.5 3 ? 2929.0 9 | <600 100 57 | 2055.99 416.99 | (1,2+) (4+) | |||
E(level): From a least-squares fit to γ-ray energies.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - g.s. band. | |||||||
| 0.0 | 0+ | 200 ms 2 % β- = 100 % β-n = 1.11 21 | |||||
| 129.18 9 | (2+) | 3.91 ns 16 | 129.2 1 | 100 | [E2] | 0.0 | 0+ |
| 416.99 19 | (4+) | 287.8 2 | 100 | [E2] | 129.18 | (2+) | |
| 851.8 3 | (6+) | 434.8 2 | 100 | 416.99 | (4+) | ||
| 1418.1 11 | (8+) | 2.13 ps 31 | 566.3 | 100 | [E2] | 851.8 | (6+) |
| 2108.0 15 | (10+) | 0.80 ps 12 | 689.9 | 100 | [E2] | 1418.1 | (8+) |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - Kπ=(4-) band. | |||||||
| 1618.71 22 | (4-) | 104 ns 19 | |||||
| 1780.5 3 | (5-) | 161.8 2 | 100 | [M1,E2] | 1618.71 | (4-) | |
| 1974.9 4 | (6-) | 194.4 3 ? | 100 | [M1,E2] | 1780.5 | (5-) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 129.18 | (2+) | 3.91 ns 16 | 129.2 1 | [E2] | 0.397 | B(E2)(W.u.)=104 4, α=0.397 |
| 416.99 | (4+) | 287.8 2 | [E2] | 0.0225 | α=0.0225 | |
| 1418.1 | (8+) | 2.13 ps 31 | 566.3 | [E2] | B(E2)(W.u.)=165 24 | |
| 1618.71 | (4-) | 104 ns 19 | 58.3 2 | [D,E2] | 3.9 | α=3.9 34 |
| (4-) | 104 ns 19 | 118.0 2 | [D,E2] | 0.31 | α=0.31 25 | |
| (4-) | 104 ns 19 | 1201.7 2 | [E1] | B(E1)(W.u.)=1.5E-9 4 | ||
| 1780.5 | (5-) | 161.8 2 | [M1,E2] | 0.11 | α=0.11 6 | |
| 1974.9 | (6-) | 194.4 3 | [M1,E2] | 0.06 | α=0.06 3 | |
| 2108.0 | (10+) | 0.80 ps 12 | 689.9 | [E2] | B(E2)(W.u.)=164 25 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 200 ms 2 % β- = 100 % β-n = 1.11 21 | %β-n: unweighted average of 1.48 12 (1993Ru01), 1.1 3 (1987PfZX), and 0.75 8 (1986ReZU, supersedes 0.73 3 in 1986Wa17). E(level): %β-n: unweighted average of 1.48 12 (1993Ru01), 1.1 3 (1987PfZX), and 0.75 8 (1986ReZU, supersedes 0.73 3 in 1986Wa17). g.s. band. |
| 129.18 | (2+) | 3.91 ns 16 | E(level): g.s. band. Jπ(level): Probable band assignment. |
| 416.99 | (4+) | E(level): g.s. band. Jπ(level): Probable band assignment. | |
| 851.8 | (6+) | E(level): g.s. band. Jπ(level): Probable band assignment. | |
| 1418.1 | (8+) | 2.13 ps 31 | E(level): g.s. band. Jπ(level): Probable band assignment. |
| 1618.71 | (4-) | 104 ns 19 | E(level): Kπ=(4-) band. |
| 1780.5 | (5-) | E(level): Kπ=(4-) band. | |
| 1974.9 | (6-) | E(level): Kπ=(4-) band. | |
| 2108.0 | (10+) | 0.80 ps 12 | E(level): g.s. band. Jπ(level): Probable band assignment. |
| E(level) | E(gamma) | Comments |
| 129.18 | 129.2 | E(γ): other: 129.6 5 from (238U,Fγ) |
| 416.99 | 287.8 | E(γ): other: 288.1 5 from (238U,Fγ) |
| 1418.1 | 566.3 | E(γ): from 248Cm SF decay |
| 1418.7 | 1289.5 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
| 2108.0 | 689.9 | E(γ): from average of 690.0 in 248Cm SF decay and 688.8 in 252Cf SF decay |
| 2115.78 | 702.3 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
| 2482.7 | 702.3 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
| 3346.0 | 1289.5 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
Other measurements:
2011Ni01: 100Sr nuclide produced in Be(238U,F) reactions at E=345 MeV/nucleon produced by the cascade operation of the RIBF complex of accelerators at RIKEN.
Mass measurements: 2017De18, 2016Kl04, 2006Ha03, 2006MaZZ
Optical isotope shift measurement: 1990Bu12
Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for 45 primary references, 38 dealing with nuclear structure calculations and seven with decay modes and half-lives.
Q-value: S(2n)=9540 8, S(2p)=30090 300 (syst), Q(β-n)=2758 10 (2017Wa10)