ADOPTED LEVELS, GAMMAS for 224Ra
Authors: Balraj Singh, Sukhjeet Singh | Citation: ENSDF | Cutoff date: 08-Mar-2022
Authors: Sukhjeet Singh, Balraj Singh | Citation: Nucl. Data Sheets 130, 127 (2015) | Cutoff date: 15-Oct-2015
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-1408 keV 4 | S(n)= 6478.7 keV 23 | S(p)= 6845.5 keV 21 | Q(α)= 5788.92 keV 15 | ||
Reference: 2021WA16 |
References: | |||
A | 224Fr β- decay (3.33 M) | B | 224Ac ε decay (2.78 H) |
C | 228Th α decay (1.9125 Y) | D | Coulomb Excitation |
E | 226Ra(p,t) | F | 226Ra(α,α’2nγ) |
G | 226Ra(58Ni,60NiG) | H | 232Th(136Xe,xγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0 | ABCDEFGH | 0+ | 3.6316 d 23 % α = 100 % 14C = 4.0×10-9 10 | |||||
84.372 3 | ABCDEFGH | 2+ | 0.748 ns 19 | 84.373 3 | 100 | E2 | 0 | 0+ |
215.985 4 | ABCDE GH | 1- | 131.613 4 215.983 5 | 51.4 6 100.0 4 | E1 E1 | 84.372 0 | 2+ 0+ | |
250.782 5 | ABCD FGH | 4+ | 0.181 ns 9 | 166.410 4 | 100 | E2 | 84.372 | 2+ |
290.352 21 | ABCD FGH | 3- | 74.4 1 205.936 27 290.5 | 1.4 4 100.0 10 | [E2] E1 [E3] | 215.985 84.372 0 | 1- 2+ 0+ | |
433.02 7 | A CD FGH | (5)- | 142.66 10 182.29 10 348.5 | 56 13 100 12 | [E2] [E1] [E3] | 290.352 250.782 84.372 | 3- 4+ 2+ | |
479.12 10 | CDEFGH | 6+ | 52.7 ps 42 | 228.3 1 | 100 | [E2] | 250.782 | 4+ |
640.69 18 | D FGH | (7-) | 160.5 5 207.8 2 | 13 4 100 19 | [E1] [E2] | 479.12 433.02 | 6+ (5)- | |
754.88 20 | D FGH | 8+ | 20.8 ps +49-55 | 113.9 5 275.8 2 | <11 100 5 | [E1] [E2] | 640.69 479.12 | (7-) 6+ |
906.17 25 | D FGH | (9-) | 151.2 5 265.5 2 | <15 100 8 | [E1] [E2] | 754.88 640.69 | 8+ (7-) | |
916.38 6 | A C E | 0+ | 700.5 5 832.01 8 | ≈21 100 17 | 215.985 84.372 | 1- 2+ | ||
965.65 6 | A D | 2+ | 881.32 7 965.56 10 | 100 6 63 7 | 84.372 0 | 2+ 0+ | ||
992.70 6 | A C | (2+) | 741.9 2 908.10 10 992.9 10 ? | 88 19 100 8 ≈88 | 250.782 84.372 0 | 4+ 2+ 0+ | ||
1053.041 23 | A | 1- | 762.63 4 837.03 7 968.62 13 1053.01 8 | 23.4 12 100 5 3.4 4 2.2 3 | (E2) M1+E2 | 290.352 215.985 84.372 0 | 3- 1- 2+ 0+ | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1068.5 3 | D FGH | 10+ | 313.6 2 | 100 | [E2] | 754.88 | 8+ | |
1090.087 24 | A | (2,3)- | 799.705 37 874.10 7 1005.5 5 | 100 6 39 3 5.5 7 | M1(+E2) | 290.352 215.985 84.372 | 3- 1- 2+ | |
1187.1 4 | A | 0+,1,2 | 970.9 5 1103.0 5 | 86 9 100 27 | 215.985 84.372 | 1- 2+ | ||
1216.89 19 | A | (1-,2) | 926.5 2 1001.1 5 | 100 24 71 9 | 290.352 215.985 | 3- 1- | ||
1220.7 4 | FGH | (11-) | 314.5 2 | 100 | 906.17 | (9-) | ||
1223 4 | E | 0+ | ||||||
1348.22 9 | A | 2+,3+ | 1097.6 2 1263.80 10 | 100 27 81 11 | 250.782 84.372 | 4+ 2+ | ||
1378.41 3 | A | 1- | 325.348 19 461.98 8 1294.21 6 1378.45 10 | 34.9 17 11.2 6 28.2 31 100 6 | M1(+E2) | 1053.041 916.38 84.372 0 | 1- 0+ 2+ 0+ | |
1379.04 6 | A | (1+,2+) | 386.4 10 413.40 5 1163.04 10 | 27.9 23 94 6 100 7 | M1(+E2) | 992.70 965.65 215.985 | (2+) 2+ 1- | |
1389.93 15 | A | (0+,1,2) | 1173.89 23 1305.6 2 | 100 15 48 7 | 215.985 84.372 | 1- 2+ | ||
1413.7 4 | FGH | (12+) | 345.2 2 | 100 | 1068.5 | 10+ | ||
1425.152 20 | A | (0,1,2)- | 335.056 19 372.08 4 1209.2 2 1340.800 25 | 22.9 9 14.4 7 1.50 15 100 7 | M1(+E2) M1(+E2) | 1090.087 1053.041 215.985 84.372 | (2,3)- 1- 1- 2+ | |
1435.54 3 | A | 1- | 382.511 25 442.78 8 519.5 2 1219.42 10 1350.9 2 1435.60 10 | 45.9 22 24 3 7.9 6 20.8 24 38 11 100 10 | M1(+E2) | 1053.041 992.70 916.38 215.985 84.372 0 | 1- (2+) 0+ 1- 2+ 0+ | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1437.11 6 | A | 2+ | 1186.35 10 1352.60 10 1437.20 10 | 34 4 86 12 100 10 | 250.782 84.372 0 | 4+ 2+ 0+ | ||
1553.67 14 | A | 1,2+ | 1338.0 5 1469.4 2 1553.5 2 | ≈100 100 12 48 6 | 215.985 84.372 0 | 1- 2+ 0+ | ||
1573.6 6 | GH | (13-) | 356.7 5 | 100 | [E2] | 1220.7 | (11-) | |
1614.42 17 | A | (1-,2) | 1323.9 3 1398.5 2 | 42 7 100 13 | 290.352 215.985 | 3- 1- | ||
1627 3 | E | |||||||
1652.49 4 | A | 2+ | 659.64 10 1401.6 2 1568.18 6 1652.47 5 | 11.5 21 7.0 10 55 7 100 12 | 992.70 250.782 84.372 0 | (2+) 4+ 2+ 0+ | ||
1658.49 9 | A | 1(-),2+ | 1368.1 2 1442.3 2 1658.54 10 | 68 16 40 5 100 20 | 290.352 215.985 0 | 3- 1- 0+ | ||
1736.44 16 | A | 1,2+ | 1520.6 2 1736.19 25 | 22 3 100 17 | 215.985 0 | 1- 0+ | ||
1754.84 9 | A | 0+,1,2 | 702.0 2 1538.4 2 1670.53 10 | 51 16 22 3 100 16 | 1053.041 215.985 84.372 | 1- 1- 2+ | ||
1761 4 | E | |||||||
1787.5 6 | H | (14+) | 373.8 5 | 100 | [E2] | 1413.7 | (12+) | |
1789.61 6 | A | 1,2+ | 1573.73 8 1705.12 10 1789.4 2 | 100 12 49 8 76 12 | 215.985 84.372 0 | 1- 2+ 0+ | ||
1796.71 9 | A | (1-,2) | 1506.4 2 1580.8 2 1712.30 10 | 43 6 39 6 100 17 | 290.352 215.985 84.372 | 3- 1- 2+ | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1818.06 19 | A | (1-,2) | 1527.7 2 1602.1 5 | 89 17 100 17 | 290.352 215.985 | 3- 1- | ||
1838.53 10 | A | 0,1,2 | 1622.54 10 | 100 | 215.985 | 1- | ||
1896.3 3 | A | (1-,2) | 1607.1 5 1679.5 5 1811.6 5 | 100 17 61 17 72 17 | 290.352 215.985 84.372 | 3- 1- 2+ | ||
1949 4 | E | |||||||
1964.7 8 | H | (15-) | 391.1 5 | 100 | [E2] | 1573.6 | (13-) | |
1969.92 10 | A | (0,1,2) | 1753.93 10 | 100 | 215.985 | 1- | ||
2000.26 17 | A | (1-,2) | 947.2 2 1784.3 3 | 100 12 70 12 | 1053.041 215.985 | 1- 1- | ||
2043.0 3 | A | 0,1,2 | 1827.05 27 | 100 | 215.985 | 1- | ||
2052.3 4 | A | 2+ | 1801.3 5 1836.5 5 | 100 19 63 19 | 250.782 215.985 | 4+ 1- | ||
2077.3 4 | A | 0+,1,2 | 1862.0 5 1992.4 4 | 47 9 100 17 | 215.985 84.372 | 1- 2+ | ||
2117.4 4 | A | 1,2+ | 2033.2 5 2117.3 5 | 65 12 100 14 | 84.372 0 | 2+ 0+ | ||
2135.3 5 | A | 0,1,2 | 1919.3 5 | 100 | 215.985 | 1- | ||
2187.7 8 | H | (16+) | 400.2 5 | 100 | [E2] | 1787.5 | (14+) | |
2229.4 4 | A | (1-,2) | 1938.3 10 2013.4 5 2145.2 5 | 73 18 91 18 100 18 | 290.352 215.985 84.372 | 3- 1- 2+ | ||
2246.5 3 | A | 1,2+ | 2030.5 5 2162.0 5 2246.6 5 | 100 16 93 15 14 3 | 215.985 84.372 0 | 1- 2+ 0+ | ||
2368.7 4 | A | 1,2+ | 2152.5 5 2368.8 5 | 100 16 53 11 | 215.985 0 | 1- 0+ | ||
2384.1 9 | H | (17-) | 419.4 5 | 100 | [E2] | 1964.7 | (15-) | |
2612.1 10 | H | (18+) | 424.4 5 | 100 | [E2] | 2187.7 | (16+) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2827.0 11 | H | (19-) | 442.9 5 | 100 | [E2] | 2384.1 | (17-) | |
3059.2 11 | H | (20+) | 447.1 5 | 100 | [E2] | 2612.1 | (18+) | |
3289.8 12 | H | (21-) | 462.8 5 | 100 | [E2] | 2827.0 | (19-) | |
3526.3 12 | H | (22+) | 467.1 5 | 100 | [E2] | 3059.2 | (20+) | |
3769.6 13 | H | (23-) | 479.8 5 | 100 | [E2] | 3289.8 | (21-) | |
4011.4 13 | H | (24+) | 485.1 5 | 100 | [E2] | 3526.3 | (22+) | |
4266.4 14 | H | (25-) | 496.8 5 | 100 | [E2] | 3769.6 | (23-) | |
4512.2 14 | H | (26+) | 500.8 5 | 100 | [E2] | 4011.4 | (24+) | |
4778.0 15 ? | H | (27-) | 511.6 5 ? | | 4266.4 | (25-) | ||
5030.4 15 ? | H | (28+) | 518.2 5 ? | | 4512.2 | (26+) |
E(level): From least-squares fit to Eγ data for levels deduced from γ-ray data
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Kπ=0+ g.s. band | |||||||
0 | 0+ | 3.6316 d 23 % α = 100 % 14C = 4.0×10-9 10 | |||||
84.372 3 | 2+ | 0.748 ns 19 | 84.373 3 | 100 | E2 | 0 | 0+ |
250.782 5 | 4+ | 0.181 ns 9 | 166.410 4 | 100 | E2 | 84.372 | 2+ |
479.12 10 | 6+ | 52.7 ps 42 | 228.3 1 | 100 | [E2] | 250.782 | 4+ |
754.88 20 | 8+ | 20.8 ps +49-55 | 113.9 5 275.8 2 | <11 100 5 | [E1] [E2] | 640.69 479.12 | (7-) 6+ |
1068.5 3 | 10+ | 313.6 2 | 100 | [E2] | 754.88 | 8+ | |
1413.7 4 | (12+) | 345.2 2 | 100 | 1068.5 | 10+ | ||
1787.5 6 | (14+) | 373.8 5 | 100 | [E2] | 1413.7 | (12+) | |
2187.7 8 | (16+) | 400.2 5 | 100 | [E2] | 1787.5 | (14+) | |
2612.1 10 | (18+) | 424.4 5 | 100 | [E2] | 2187.7 | (16+) | |
3059.2 11 | (20+) | 447.1 5 | 100 | [E2] | 2612.1 | (18+) | |
3526.3 12 | (22+) | 467.1 5 | 100 | [E2] | 3059.2 | (20+) | |
4011.4 13 | (24+) | 485.1 5 | 100 | [E2] | 3526.3 | (22+) | |
4512.2 14 | (26+) | 500.8 5 | 100 | [E2] | 4011.4 | (24+) | |
5030.4 15 | (28+) | 518.2 5 ? | | 4512.2 | (26+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - Kπ=0- band | |||||||
215.985 4 | 1- | ||||||
290.352 21 | 3- | 74.4 1 205.936 27 290.5 | 1.4 4 100.0 10 | [E2] E1 [E3] | 215.985 84.372 0 | 1- 2+ 0+ | |
433.02 7 | (5)- | 142.66 10 182.29 10 348.5 | 56 13 100 12 | [E2] [E1] [E3] | 290.352 250.782 84.372 | 3- 4+ 2+ | |
640.69 18 | (7-) | 160.5 5 207.8 2 | 13 4 100 19 | [E1] [E2] | 479.12 433.02 | 6+ (5)- | |
906.17 25 | (9-) | 151.2 5 265.5 2 | <15 100 8 | [E1] [E2] | 754.88 640.69 | 8+ (7-) | |
1220.7 4 | (11-) | 314.5 2 | 100 | 906.17 | (9-) | ||
1573.6 6 | (13-) | 356.7 5 | 100 | [E2] | 1220.7 | (11-) | |
1964.7 8 | (15-) | 391.1 5 | 100 | [E2] | 1573.6 | (13-) | |
2384.1 9 | (17-) | 419.4 5 | 100 | [E2] | 1964.7 | (15-) | |
2827.0 11 | (19-) | 442.9 5 | 100 | [E2] | 2384.1 | (17-) | |
3289.8 12 | (21-) | 462.8 5 | 100 | [E2] | 2827.0 | (19-) | |
3769.6 13 | (23-) | 479.8 5 | 100 | [E2] | 3289.8 | (21-) | |
4266.4 14 | (25-) | 496.8 5 | 100 | [E2] | 3769.6 | (23-) | |
4778.0 15 | (27-) | 511.6 5 ? | | 4266.4 | (25-) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
84.372 | 2+ | 0.748 ns 19 | 84.373 3 | E2 | 21.2 | B(E2)(W.u.)=99 3, α=21.2, α(L)=15.57 22, α(M)=4.24 6, α(N)=1.119 16, α(O)=0.238 4, α(P)=0.0343 5, α(Q)=0.0001015 15 | |
215.985 | 1- | 131.613 4 | E1 | 0.247 | α=0.247, α(K)=0.194 3, α(L)=0.0406 6, α(M)=0.00977 14, α(N)=0.00254 4, α(O)=0.000559 8, α(P)=8.92×10-5 13, α(Q)=4.80E-6 7 | ||
1- | 215.983 5 | E1 | 0.0752 | α=0.0752, α(K)=0.0600 9, α(L)=0.01148 16, α(M)=0.00274 4, α(N)=0.000717 10, α(O)=0.0001593 23, α(P)=2.62×10-5 4, α(Q)=1.587E-6 23 | |||
250.782 | 4+ | 0.181 ns 9 | 166.410 4 | E2 | 1.164 | B(E2)(W.u.)=140 7, α=1.164, α(K)=0.225 4, α(L)=0.691 10, α(M)=0.187 3, α(N)=0.0495 7, α(O)=0.01056 15, α(P)=0.001553 22, α(Q)=1.200E-5 17 | |
290.352 | 3- | 74.4 1 | [E2] | 38.5 | α=38.5, α(L)=28.3 5, α(M)=7.70 12, α(N)=2.03 4, α(O)=0.431 7, α(P)=0.0621 10, α(Q)=0.0001645 25 | ||
3- | 205.936 27 | E1 | 0.0841 | α=0.0841, α(K)=0.0671 10, α(L)=0.01293 19, α(M)=0.00309 5, α(N)=0.000807 12, α(O)=0.000179 3, α(P)=2.94×10-5 5, α(Q)=1.763E-6 25 | |||
3- | 290.5 | [E3] | 1.084 | α=1.084, α(K)=0.196 3, α(L)=0.647 9, α(M)=0.180 3, α(N)=0.0481 7, α(O)=0.01035 15, α(P)=0.001552 22, α(Q)=1.88×10-5 3 | |||
433.02 | (5)- | 142.66 10 | [E2] | 2.14 | α=2.14, α(K)=0.279 4, α(L)=1.370 20, α(M)=0.372 6, α(N)=0.0984 15, α(O)=0.0210 3, α(P)=0.00307 5, α(Q)=1.83×10-5 3 | ||
(5)- | 182.29 10 | [E1] | 0.1126 | α=0.1126, α(K)=0.0894 13, α(L)=0.01757 25, α(M)=0.00421 6, α(N)=0.001098 16, α(O)=0.000243 4, α(P)=3.96×10-5 6, α(Q)=2.31E-6 4 | |||
(5)- | 348.5 | [E3] | 0.508 | α=0.508, α(K)=0.1352 19, α(L)=0.273 4, α(M)=0.0753 11, α(N)=0.0200 3, α(O)=0.00433 6, α(P)=0.000656 10, α(Q)=1.039×10-5 15 | |||
479.12 | 6+ | 52.7 ps 42 | 228.3 1 | [E2] | 0.367 | B(E2)(W.u.)=157 13, α=0.367, α(K)=0.1245 18, α(L)=0.179 3, α(M)=0.0480 7, α(N)=0.01269 18, α(O)=0.00273 4, α(P)=0.000407 6, α(Q)=5.37E-6 8 | |
640.69 | (7-) | 160.5 5 | [E1] | 0.1530 | α=0.1530 25, α(K)=0.1209 20, α(L)=0.0243 4, α(M)=0.00583 10, α(N)=0.001521 25, α(O)=0.000336 6, α(P)=5.43×10-5 9, α(Q)=3.07E-6 5 | ||
(7-) | 207.8 2 | [E2] | 0.510 | α=0.510, α(K)=0.1502 22, α(L)=0.265 4, α(M)=0.0714 11, α(N)=0.0189 3, α(O)=0.00404 6, α(P)=0.000601 9, α(Q)=6.77×10-6 10 | |||
754.88 | 8+ | 20.8 ps +49-55 | 113.9 5 | [E1] | 0.350 | B(E1)(W.u.)=0.0003 3, α=0.350 7, α(K)=0.272 5, α(L)=0.0594 11, α(M)=0.0143 3, α(N)=0.00372 7, α(O)=0.000813 15, α(P)=0.0001285 23, α(Q)=6.64E-6 12 | |
8+ | 20.8 ps +49-55 | 275.8 2 | [E2] | 0.197 | B(E2)(W.u.)=1.7×102 5, α=0.197, α(K)=0.0844 12, α(L)=0.0833 12, α(M)=0.0222 4, α(N)=0.00587 9, α(O)=0.001265 18, α(P)=0.000191 3, α(Q)=3.42E-6 5 | ||
906.17 | (9-) | 151.2 5 | [E1] | 0.177 | α=0.177 3, α(K)=0.1394 23, α(L)=0.0284 5, α(M)=0.00681 12, α(N)=0.00177 3, α(O)=0.000391 7, α(P)=6.30×10-5 11, α(Q)=3.51E-6 6 | ||
(9-) | 265.5 2 | [E2] | 0.223 | α=0.223, α(K)=0.0914 13, α(L)=0.0968 14, α(M)=0.0259 4, α(N)=0.00683 10, α(O)=0.001472 21, α(P)=0.000222 4, α(Q)=3.74×10-6 6 | |||
1053.041 | 1- | 762.63 4 | (E2) | 0.01536 | α=0.01536, α(K)=0.01137 16, α(L)=0.00300 5, α(M)=0.000745 11, α(N)=0.000197 3, α(O)=4.38×10-5 7, α(P)=7.23E-6 11, α(Q)=3.96E-7 6 | ||
1- | 837.03 7 | M1+E2 | 1.6 +18-4 | 0.0219 | α=0.0219 66, α(K)=0.0172 55, α(L)=0.0035 9, α(M)=0.00086 20, α(N)=0.00023 6, α(O)=5.1×10-5 12, α(P)=8.7E-6 22, α(Q)=6.0E-7 20 | ||
1068.5 | 10+ | 313.6 2 | [E2] | 0.1332 | α=0.1332, α(K)=0.0646 9, α(L)=0.0507 8, α(M)=0.01343 19, α(N)=0.00355 5, α(O)=0.000768 11, α(P)=0.0001172 17, α(Q)=2.55×10-6 4 | ||
1090.087 | (2,3)- | 799.705 37 | M1(+E2) | 0.033 | α=0.033 19, α(K)=0.026 16, α(L)=0.0050 24, α(M)=0.00121 56, α(N)=3.2×10-4 15, α(O)=7.2E-5 34, α(P)=1.25E-5 61, α(Q)=9.1E-7 55 | ||
1378.41 | 1- | 325.348 19 | M1(+E2) | 0.3 LT | 0.549 | α=0.549 20, α(K)=0.441 18, α(L)=0.0821 20, α(M)=0.0196 5, α(N)=0.00518 12, α(O)=0.00118 3, α(P)=0.000205 6, α(Q)=1.58×10-5 7 | |
1379.04 | (1+,2+) | 413.40 5 | M1(+E2) | 0.5 LT | 0.272 | α=0.272 24, α(K)=0.218 21, α(L)=0.041 3, α(M)=0.0098 6, α(N)=0.00259 15, α(O)=0.00059 4, α(P)=0.000102 7, α(Q)=7.8×10-6 8 | |
1425.152 | (0,1,2)- | 335.056 19 | M1(+E2) | 0.5 LT | 0.48 | α=0.48 5, α(K)=0.39 4, α(L)=0.073 4, α(M)=0.0176 9, α(N)=0.00465 22, α(O)=0.00106 6, α(P)=0.000183 11, α(Q)=1.39×10-5 14 | |
(0,1,2)- | 372.08 4 | M1(+E2) | 1.1 LT | 0.308 | α=0.308 86, α(K)=0.243 75, α(L)=0.049 9, α(M)=0.0120 19, α(N)=0.0032 5, α(O)=0.00072 12, α(P)=0.000123 23, α(Q)=8.7×10-6 27 | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
1435.54 | 1- | 382.511 25 | M1(+E2) | 0.7 LT | 0.32 | α=0.32 5, α(K)=0.25 5, α(L)=0.049 5, α(M)=0.0118 11, α(N)=0.0031 3, α(O)=0.00070 7, α(P)=0.000122 13, α(Q)=9.1×10-6 15 | |
1573.6 | (13-) | 356.7 5 | [E2] | 0.0920 | α=0.0920, α(K)=0.0496 7, α(L)=0.0315 5, α(M)=0.00827 13, α(N)=0.00218 4, α(O)=0.000475 7, α(P)=7.33×10-5 11, α(Q)=1.91E-6 3 | ||
1787.5 | (14+) | 373.8 5 | [E2] | 0.0809 | α=0.0809, α(K)=0.0450 7, α(L)=0.0266 4, α(M)=0.00697 11, α(N)=0.00184 3, α(O)=0.000401 6, α(P)=6.21×10-5 10, α(Q)=1.721E-6 25 | ||
1964.7 | (15-) | 391.1 5 | [E2] | 0.0717 | α=0.0717, α(K)=0.0411 6, α(L)=0.0227 4, α(M)=0.00593 9, α(N)=0.001565 23, α(O)=0.000341 5, α(P)=5.30×10-5 8, α(Q)=1.559E-6 23 | ||
2187.7 | (16+) | 400.2 5 | [E2] | 0.0674 | α=0.0674, α(K)=0.0392 6, α(L)=0.0209 3, α(M)=0.00546 8, α(N)=0.001442 22, α(O)=0.000314 5, α(P)=4.90×10-5 8, α(Q)=1.483E-6 22 | ||
2384.1 | (17-) | 419.4 5 | [E2] | 0.0597 | α=0.0597, α(K)=0.0357 5, α(L)=0.0178 3, α(M)=0.00464 7, α(N)=0.001224 18, α(O)=0.000267 4, α(P)=4.19×10-5 6, α(Q)=1.340E-6 19 | ||
2612.1 | (18+) | 424.4 5 | [E2] | 0.0579 | α=0.0579, α(K)=0.0349 5, α(L)=0.01712 25, α(M)=0.00445 7, α(N)=0.001175 18, α(O)=0.000257 4, α(P)=4.02×10-5 6, α(Q)=1.306E-6 19 | ||
2827.0 | (19-) | 442.9 5 | [E2] | 0.0520 | α=0.0520, α(K)=0.0320 5, α(L)=0.01484 22, α(M)=0.00385 6, α(N)=0.001015 15, α(O)=0.000222 4, α(P)=3.50×10-5 5, α(Q)=1.193E-6 17 | ||
3059.2 | (20+) | 447.1 5 | [E2] | 0.0508 | α=0.0508, α(K)=0.0314 5, α(L)=0.01438 21, α(M)=0.00372 6, α(N)=0.000983 15, α(O)=0.000215 4, α(P)=3.39×10-5 5, α(Q)=1.169E-6 17 | ||
3289.8 | (21-) | 462.8 5 | [E2] | 0.0466 | α=0.0466, α(K)=0.0293 5, α(L)=0.01284 19, α(M)=0.00332 5, α(N)=0.000876 13, α(O)=0.000192 3, α(P)=3.03×10-5 5, α(Q)=1.087E-6 16 | ||
3526.3 | (22+) | 467.1 5 | [E2] | 0.0456 | α=0.0456, α(K)=0.0288 4, α(L)=0.01246 18, α(M)=0.00322 5, α(N)=0.000849 13, α(O)=0.000186 3, α(P)=2.94×10-5 5, α(Q)=1.066E-6 16 | ||
3769.6 | (23-) | 479.8 5 | [E2] | 0.0427 | α=0.0427, α(K)=0.0273 4, α(L)=0.01143 17, α(M)=0.00294 5, α(N)=0.000777 12, α(O)=0.0001705 25, α(P)=2.70×10-5 4, α(Q)=1.007E-6 15 | ||
4011.4 | (24+) | 485.1 5 | [E2] | 0.0416 | α=0.0416, α(K)=0.0268 4, α(L)=0.01104 16, α(M)=0.00284 4, α(N)=0.000750 11, α(O)=0.0001645 24, α(P)=2.61×10-5 4, α(Q)=9.84E-7 14 | ||
4266.4 | (25-) | 496.8 5 | [E2] | 0.0393 | α=0.0393, α(K)=0.0255 4, α(L)=0.01023 15, α(M)=0.00263 4, α(N)=0.000694 10, α(O)=0.0001524 22, α(P)=2.42×10-5 4, α(Q)=9.37E-7 14 | ||
4512.2 | (26+) | 500.8 5 | [E2] | 0.0385 | α=0.0385, α(K)=0.0251 4, α(L)=0.00998 15, α(M)=0.00256 4, α(N)=0.000676 10, α(O)=0.0001485 22, α(P)=2.36×10-5 4, α(Q)=9.21E-7 13 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 0+ | 3.6316 d 23 % α = 100 % 14C = 4.0×10-9 10 | δ<r2>=+1.09 11, relative to 214Ra (1988Ah02); other: 1989Ne03. E(level): Kπ=0+ g.s. band. |
84.372 | 2+ | 0.748 ns 19 | μ=+0.92 22 (1973He13,2020StZV) Q2=6.32 10, β2=0.154 (2012GaZV,2013Ga23). E(level): Kπ=0+ g.s. band. |
215.985 | 1- | E(level): Kπ=0- band. | |
250.782 | 4+ | 0.181 ns 9 | E(level): Kπ=0+ g.s. band. |
290.352 | 3- | E(level): Kπ=0- band. | |
433.02 | (5)- | γ-ray branching ratio is in disagreement in various experiments. E(level): Kπ=0- band. | |
479.12 | 6+ | 52.7 ps 42 | E(level): Kπ=0+ g.s. band. |
640.69 | (7-) | E(level): Kπ=0- band. | |
754.88 | 8+ | 20.8 ps +49-55 | E(level): Kπ=0+ g.s. band. |
906.17 | (9-) | E(level): Kπ=0- band. | |
1068.5 | 10+ | E(level): Kπ=0+ g.s. band. | |
1220.7 | (11-) | E(level): Kπ=0- band. | |
1413.7 | (12+) | E(level): Kπ=0+ g.s. band. | |
1573.6 | (13-) | E(level): Kπ=0- band. | |
1754.84 | 0+,1,2 | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
1787.5 | (14+) | E(level): Kπ=0+ g.s. band. | |
1796.71 | (1-,2) | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
1818.06 | (1-,2) | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
1838.53 | 0,1,2 | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
1896.3 | (1-,2) | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
1964.7 | (15-) | E(level): Kπ=0- band. | |
1969.92 | (0,1,2) | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
2000.26 | (1-,2) | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
2043.0 | 0,1,2 | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
2052.3 | 2+ | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
E(level) | Jπ(level) | T1/2(level) | Comments |
2077.3 | 0+,1,2 | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
2135.3 | 0,1,2 | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
2187.7 | (16+) | E(level): Kπ=0+ g.s. band. | |
2229.4 | (1-,2) | Jπ(level): log ft<7.8, log f1ut<7.8 from 1- 224Fr rules out J=3. | |
2384.1 | (17-) | E(level): Kπ=0- band. | |
2612.1 | (18+) | E(level): Kπ=0+ g.s. band. | |
2827.0 | (19-) | E(level): Kπ=0- band. | |
3059.2 | (20+) | E(level): Kπ=0+ g.s. band. | |
3289.8 | (21-) | E(level): Kπ=0- band. | |
3526.3 | (22+) | E(level): Kπ=0+ g.s. band. | |
3769.6 | (23-) | E(level): Kπ=0- band. | |
4011.4 | (24+) | E(level): Kπ=0+ g.s. band. | |
4266.4 | (25-) | E(level): Kπ=0- band. | |
4512.2 | (26+) | E(level): Kπ=0+ g.s. band. | |
4778.0 | (27-) | E(level): Kπ=0- band. | |
5030.4 | (28+) | E(level): Kπ=0+ g.s. band. |
E(level) | E(gamma) | Comments |
84.372 | 84.373 | M(γ): From 228Th α decay |
215.985 | 131.613 | M(γ): From 228Th α decay | 215.983 | M(γ): From 228Th α decay |
250.782 | 166.410 | M(γ): From 228Th α decay |
290.352 | 74.4 | I(γ): averaging by LWM | 290.5 | E(γ): from Coulomb excitation |
433.02 | 142.66 | I(γ): from Coulomb excitation based on extensive data for yield measurements. This value agrees with 54 19 from (58Ni,60Niγ), but not with 26 10 from α decay and 139 39 from (136Xe,Xγ). Weighted average of all four measurements is 43 13 with reduced χ2=3.4 as compared to critical χ2=2.6 | 348.5 | E(γ): from Coulomb excitation |
754.88 | 113.9 | E(γ): uncertainty assigned by evaluators |
916.38 | 700.5 | E(γ): From 228Th α decay I(γ): From 228Th α decay | 832.01 | I(γ): From 228Th α decay |
1068.5 | 313.6 | E(γ): NRM average of three values. Weighted average gives 313.3 4 with reduced χ2=9.2 |
1573.6 | 356.7 | E(γ): 348.5 2 in (58Ni,60Niγ) is discrepant |
In the past, 224Ra was called ThX, and was first identified by Rutherford and Soddy, Phil. Mag. 4, 370 (1902), extracted from thorium with an estimated half-life of ≈4 d. Later studies of decay of 224Ra: 1938Le07, 1962Ll02, 1962Wa28, 1971Jo14, 1977Ku15, 2004Sc04
2014Bo26: mass determination with Penning-trap mass spectrometer ISOLTRAP facility at ISOLDE, CERN. Measured mass excess=18826 28
Theoretical calculations: 132 references extracted from the NSR database are listed in document records.
Q-value: S(2n)=11637 5, S(2p)=12124.1 19 (2021Wa16)