ADOPTED LEVELS, GAMMAS for 90Kr
Authors: S. K. Basu, E.A. Mccutchan | Citation: Nucl. Data Sheets 165, 1 (2020) | Cutoff date: 1-Mar-2020
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=4405 keV 7 | S(n)= 6494.8 keV 28 | S(p)= 13974 keV 4 | Q(α)= -6881 keV 3 | ||
Reference: 2017WA10 |
References: | |||
A | 90Br β- decay | B | 248Cm SF decay |
C | 252Cf SF decay | D | 235U(n,Fγ) |
E | Coulomb Excitation |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABCDE | 0+ | 32.32 s 9 % β- = 100 | |||||
707.12 5 | ABCDE | 2+ | 10.7 ps 16 | 707.05 6 | 100 | E2 | 0.0 | 0+ |
1362.25 6 | ABCDE | 2+ | 1.1 ps +4-2 | 655.17 6 1362.32 10 | 63.5 15 100 8 | (M1+E2) E2 | 707.12 0.0 | 2+ 0+ |
1763.89 15 | BCD | (3,4,2)+ | 401.4 1056.2 | 100 4 24.1 | E2 E2 | 1362.25 707.12 | 2+ 2+ | |
1830.49 15 | ABCD | 4+ | 1123.37 15 | 100 | E2 | 707.12 | 2+ | |
1940.33 8 | A | 578.06 18 1233.21 8 | 14.5 16 100 4 | 1362.25 707.12 | 2+ 2+ | |||
2103.13 8 | A | 740.82 8 1396.16 13 | 100 5 33 3 | 1362.25 707.12 | 2+ 2+ | |||
2147.81 10 | A | 786.02 12 1440.21 12 | 100 7 20.2 19 | 1362.25 707.12 | 2+ 2+ | |||
2193.1 4 | A | 1486.0 4 | 100 | 707.12 | 2+ | |||
2249.34 14 | A E | (2+) | < 0.23 ps | 1542.20 13 2249? | 100 <23.0 | [E2] | 707.12 0.0 | 2+ 0+ |
2318.09 7 | A | 955.84 8 1610.80 11 2318.6 2 | 98 5 100 5 47 4 | 1362.25 707.12 0.0 | 2+ 2+ 0+ | |||
2536.04 21 | A | 1828.90 20 | 100 | 707.12 | 2+ | |||
2543.70 10 | A | 1836.49 10 2543.93 20 | 100 6 20 3 | 707.12 0.0 | 2+ 0+ | |||
2595.93 14 | A | 1888.79 13 | 100 | 707.12 | 2+ | |||
2596.49 25 | BCD | 832.8 | 100 | 1763.89 | (3,4,2)+ | |||
2685.83 13 | A | 1323.57 12 | 100 | 1362.25 | 2+ | |||
2687.31 13 | A | 539.50 8 | 100 | 2147.81 | ||||
2730.76 17 | A | 2024.1 3 2730.5 2 | 26 4 100 7 | 707.12 0.0 | 2+ 0+ | |||
2747.94 15 | A | 2040.79 14 | 100 | 707.12 | 2+ | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2780.60 9 | A | 840.29 10 1418.34 11 2073.0 5 | 100 8 84 8 16 4 | 1940.33 1362.25 707.12 | 2+ 2+ | |||
2828.26 22 | A | 1465.9 3 2121.2 3 | 98 12 100 11 | 1362.25 707.12 | 2+ 2+ | |||
2853.16 22 | BCD | 5 | 1022.7 | 100 | D+Q | 1830.49 | 4+ | |
2864.15 20 | A | 2864.1 2 | 100 | 0.0 | 0+ | |||
2987.32 10 | A | 1625.11 13 2987.1 2 | 100 7 66 5 | 1362.25 0.0 | 2+ 0+ | |||
3084.86 21 | BCD | 1254.4 1321.5 | | 1830.49 1763.89 | 4+ (3,4,2)+ | |||
3140.25 16 | A | 2433.09 15 | 100 | 707.12 | 2+ | |||
3223.5 3 | BCD | (5+,6+) | 1393.2 1460.3 | | 1830.49 1763.89 | 4+ (3,4,2)+ | ||
3231.44 17 | A | 913.38 20 3231.3 3 | 7.6 10 100 10 | 2318.09 0.0 | 0+ | |||
3285.10 17 | A | 1344.76 15 | 100 | 1940.33 | ||||
3318.4 3 | A | 3318.5 3 | 100 | 0.0 | 0+ | |||
3372.6 3 | A | 2665.4 3 | 100 | 707.12 | 2+ | |||
3508.2 3 | A | 2801.0 3 | 100 | 707.12 | 2+ | |||
3695.5 4 | CD | 1099.0 | 100 | 2596.49 | ||||
3896.53 24 | BCD | 672.9 811.7 1043.4 | | 3223.5 3084.86 2853.16 | (5+,6+) 5 | |||
4036.5 5 | BCD | 813.4 | 100 | 3223.5 | (5+,6+) | |||
4099.0 10 | D | 1245.8 | 100 | 2853.16 | 5 | |||
4284.9 4 | CD | 1200.0 | 100 | 3084.86 | ||||
4291.0 3 | A | 4290.9 3 | 100 | 0.0 | 0+ | |||
4546.6 5 | A | 2002.9 5 | 100 | 2543.70 | ||||
4785.78 22 | A | 2682.6 2 | 100 | 2103.13 | ||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
5004.4 3 | A | 4297.2 3 | 100 | 707.12 | 2+ | |||
5053.0 3 | BCD | 1156.6 | 100 | 3896.53 | ||||
5080.0 5 | A | 4372.8 5 | 100 | 707.12 | 2+ | |||
5385.4 6 | A | 4023.1 6 | 100 | 1362.25 | 2+ | |||
5683.3 5 | A | 4320.9 5 | 100 | 1362.25 | 2+ | |||
5730.1 3 | A | 2411.8 3 4367.3 5 | 71 12 100 13 | 3318.4 1362.25 | 2+ | |||
6298.3 4 ? | C | 1245.3? | 100 | 5053.0 |
E(level): From least-squares fit to Eγ, by evaluators.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Ground state band. | |||||||
0.0 | 0+ | 32.32 s 9 % β- = 100 | |||||
707.12 5 | 2+ | 10.7 ps 16 | 707.05 6 | 100 | E2 | 0.0 | 0+ |
1830.49 15 | 4+ | 1123.37 15 | 100 | E2 | 707.12 | 2+ |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
707.12 | 2+ | 10.7 ps 16 | 707.05 6 | E2 | 1.18×10-3 | B(E2)(W.u.)=12.8 19, α=1.18E-3, α(K)=0.001048 15, α(L)=0.0001136 16, α(M)=1.84E-5 3, α(N)=1.84E-6 3 | |
1362.25 | 2+ | 1.1 ps +4-2 | 655.17 6 | (M1+E2) | +0.507 | B(E2)(W.u.)=14 6, B(M1)(W.u.)=0.022 6 | |
2+ | 1.1 ps +4-2 | 1362.32 10 | E2 | 2.93×10-4 | B(E2)(W.u.)=2.8 +6-8, α=2.93E-4, α(K)=0.000223 4, α(L)=2.36E-5 4, α(M)=3.82E-6 6, α(N)=3.86E-7 6 | ||
1763.89 | (3,4,2)+ | 401.4 | E2 | 0.00638 | α=0.00638, α(K)=0.00563 8, α(L)=0.000633 9, α(M)=0.0001024 15, α(N)=1.011×10-5 15 | ||
(3,4,2)+ | 1056.2 | E2 | 4.36×10-4 | α=4.36×10-4, α(K)=0.000388 6, α(L)=4.13E-5 6, α(M)=6.69E-6 10, α(N)=6.74E-7 10 | |||
1830.49 | 4+ | 1123.37 15 | E2 | 3.81×10-4 | α=3.81×10-4, α(K)=0.000338 5, α(L)=3.59E-5 5, α(M)=5.81E-6 9, α(N)=5.86E-7 9 | ||
2853.16 | 5 | 1022.7 | D+Q | +0.072 19 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 32.32 s 9 % β- = 100 | Δ<r2> (89Kr, 90Kr)=0.116 fm2 11 (1996Li25); Δ<r2> (86Kr, 90Kr)=0.5 fm2 1 (1995Ke04). Others: 1992Li24, 1992Ne09. E(level): Δ<r2> (89Kr, 90Kr)=0.116 fm2 11 (1996Li25); Δ<r2> (86Kr, 90Kr)=0.5 fm2 1 (1995Ke04). Others: 1992Li24, 1992Ne09. Ground state band. |
707.12 | 2+ | 10.7 ps 16 | B(E2)=0.1500 230 (2017El04) E(level): Ground state band. |
1830.49 | 4+ | E(level): Ground state band. |
E(level) | E(gamma) | Comments |
707.12 | 707.05 | M(γ): Q from γγ(θ) in 252Cf and 248Cm SF decay, M2 excluded by comparison to RUL. |
1362.25 | 655.17 | I(γ): from 235U(n,Fγ) M(γ): d from γγ(θ) in 248Cm SF decay, Δπ=no from level scheme. | 1362.32 | M(γ): Q from γγ(θ) in 252Cf and 248Cm SF decay, M2 excluded by comparison to RUL. |
1763.89 | 401.4 | E(γ): From 252Cf SF decay. I(γ): from 235U(n,Fγ) | 1056.2 | E(γ): From 252Cf SF decay. I(γ): from 235U(n,Fγ) |
2596.49 | 832.8 | E(γ): From 252Cf SF decay. |
2853.16 | 1022.7 | E(γ): From 252Cf SF decay. |
3084.86 | 1254.4 | E(γ): From 252Cf SF decay. | 1321.5 | E(γ): From 252Cf SF decay. |
3223.5 | 1393.2 | E(γ): From 252Cf SF decay. | 1460.3 | E(γ): From 252Cf SF decay. |
3695.5 | 1099.0 | E(γ): From 252Cf SF decay. |
3896.53 | 672.9 | E(γ): observed only in 252Cf SF decay. From 252Cf SF decay. | 811.7 | E(γ): observed only in 252Cf SF decay. From 252Cf SF decay. | 1043.4 | E(γ): From 252Cf SF decay. |
4036.5 | 813.4 | E(γ): From 252Cf SF decay. |
4099.0 | 1245.8 | E(γ): from 235U(n,fγ) |
4284.9 | 1200.0 | E(γ): From 252Cf SF decay. |
5053.0 | 1156.6 | E(γ): From 252Cf SF decay. |
6298.3 | 1245.3 | E(γ): observed only in 252Cf SF decay. From 252Cf SF decay. |
There are a number of γ-ray transitions initially proposed to belong to 90Kr in 252Cf and 248Cm SF decay datasets, that have subsequently been assigned to 91Kr in 235U(n,Fγ). These transitions and their respective levels are not included in the Adopted Levels and Gammas. See the 252Cf and 248Cm SF decay datasets for their placements.
Q-value: S(2n)=11411 3; S(2p)=25653 4 (2017Wa10)