ADOPTED LEVELS, GAMMAS for 221Ra
Authors: Ashok Jain, Sukhjeet Singh, Suresh Kumar, Jagdish Tuli | Citation: Nucl. Data Sheets 108, 883 (2007) | Cutoff date: 15-Jan-2007
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-1.56×103 keV 5 | S(n)= 5378 keV 10 | S(p)= 5808 keV 6 | Q(α)= 6880.4 keV 20 | ||
Reference: 2012WA38 |
References: | |||
A | 225Th α decay | B | 210Pb(14C,3nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | A | 5/2+ | 28 s 2 % α = 100 | |||||
53.14 8 | A | (7/2)+ | 53.2 2 | | M1(+E2) | 0.0 | 5/2+ | |
103.61 11 | A | (5/2)- | 50.5 2 103.5 2 | 13 4 100 20 | E1 | 53.14 0.0 | (7/2)+ 5/2+ | |
121.95 10 | A | (9/2+) | 68.8 2 121.9 2 | 100 10 24 6 | (M1) | 53.14 0.0 | (7/2)+ 5/2+ | |
146.81 20 | A | (7/2)- | 146.8 2 | | E1 | 0.0 | 5/2+ | |
174 5 ? | A | |||||||
210.9 4 | B | (11/2+) | 89.0 3 | 100 | 121.95 | (9/2+) | ||
299.16 8 | A | (7/2)+ | 177.2 1 246.0 1 299.2 1 | 19.1 9 100 3 16 3 | M1 M1 | 121.95 53.14 0.0 | (9/2+) (7/2)+ 5/2+ | |
318.9 5 | B | (13/2+) | 108.0 3 | 100 | 210.9 | (11/2+) | ||
321.39 9 | A | (3/2)+ | 217.7 2 321.4 1 | 1.7 3 100 | (E1) M1 | 103.61 0.0 | (5/2)- 5/2+ | |
341.5 5 | B | (13/2-) | 130.6 3 | 100 | E1 | 210.9 | (11/2+) | |
359.02 8 | A | (5/2)+ | 212.0 305.9 1 359.0 1 | 4.4 22 100 10 100 12 | M1 M1 | 146.81 53.14 0.0 | (7/2)- (7/2)+ 5/2+ | |
438.0 5 | B | (15/2+) | 96.5 3 | 100 | E1 | 341.5 | (13/2-) | |
440.4 5 | B | (15/2-) | 121.5 3 | 100 | E1 | 318.9 | (13/2+) | |
450.33 16 | A | (5/2-) | 128.9 2 151.2 2 | 22 5 100 8 | (E1) | 321.39 299.16 | (3/2)+ (7/2)+ | |
485.41 11 | A | (3/2-,5/2-) | 126.4 2 164.0 2 381.8 2 485.4 2 | 45 10 100 36 88 18 18 6 | (E1) (E1) | 359.02 321.39 103.61 0.0 | (5/2)+ (3/2)+ (5/2)- 5/2+ | |
566.0 5 | B | (17/2-) | 128.0 3 224.5 3 ? | 100 21 | E1 | 438.0 341.5 | (15/2+) (13/2-) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
573.1 5 | B | (17/2+) | 132.7 3 254.2 3 | 100 48 | 440.4 318.9 | (15/2-) (13/2+) | ||
688.4 5 | B | (19/2-) | 115.3 3 248.0 3 | 100 28 | E1 E2 | 573.1 440.4 | (17/2+) (15/2-) | |
711.6 5 | B | (19/2+) | 145.6 3 273.6 3 | 100 43 | E1 | 566.0 438.0 | (17/2-) (15/2+) | |
849.6 5 | B | (21/2-) | 138.0 3 161.2 3 283.6 3 | 100 32 25 | E1 E2 | 711.6 688.4 566.0 | (19/2+) (19/2-) (17/2-) | |
866.9 5 | B | (21/2+) | 178.5 3 293.8 3 | 100 28 | E1 E2 | 688.4 573.1 | (19/2-) (17/2+) | |
990.4 5 | B | (23/2-) | 123.5 3 140.8 3 302.0 3 | 100 39 78 | E2 | 866.9 849.6 688.4 | (21/2+) (21/2-) (19/2-) | |
1025.9 5 | B | (23/2+) | 176.3 3 314.3 3 | 100 43 | E1 | 849.6 711.6 | (21/2-) (19/2+) | |
1180.5 6 | B | (25/2-) | 154.6 3 330.9 3 | 100 84 | E2 | 1025.9 849.6 | (23/2+) (21/2-) | |
1197.4 6 | B | (25/2+) | 207.0 3 330.5 3 | 100 53 | E1 | 990.4 866.9 | (23/2-) (21/2+) | |
1344.4 6 | B | (27/2-) | 147.0 3 354.0 3 ? | 74 100 | 1197.4 990.4 | (25/2+) (23/2-) | ||
1375.8 6 | B | (27/2+) | 195.2 3 349.8 3 ? | 100 47 | 1180.5 1025.9 | (25/2-) (23/2+) |
E(level): From least-squares adjustment of Eγ.
Jπ(level): Based on suggested band assignments and other arguments given. Jπ for levels seen only in (14C,3nγ) are from 1991Fe07 based on DCO-deduced multipolarities and band assignments. Similar band structure has been observed in 223Th isotone (1991Fe07).
I(γ): Relative photon intensities deexciting each level.
M(γ): From α decay, (14C,3nγ). Multipolarities for transitions in (14C,3nγ) are based on DCO ratios. See (14C,3nγ) for multipolarities suggested by 1991Fe07 but not adopted here.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - 5/2[633] | |||||||
0.0 | 5/2+ | 28 s 2 % α = 100 | |||||
53.14 8 | (7/2)+ | 53.2 2 | | M1(+E2) | 0.0 | 5/2+ | |
121.95 10 | (9/2+) | 68.8 2 121.9 2 | 100 10 24 6 | (M1) | 53.14 0.0 | (7/2)+ 5/2+ | |
318.9 5 | (13/2+) | 108.0 3 | 100 | 210.9 | (11/2+) | ||
440.4 5 | (15/2-) | 121.5 3 | 100 | E1 | 318.9 | (13/2+) | |
573.1 5 | (17/2+) | ||||||
688.4 5 | (19/2-) | 115.3 3 248.0 3 | 100 28 | E1 E2 | 573.1 440.4 | (17/2+) (15/2-) | |
866.9 5 | (21/2+) | 178.5 3 293.8 3 | 100 28 | E1 E2 | 688.4 573.1 | (19/2-) (17/2+) | |
990.4 5 | (23/2-) | 123.5 3 140.8 3 302.0 3 | 100 39 78 | E2 | 866.9 849.6 688.4 | (21/2+) (21/2-) (19/2-) | |
1197.4 6 | (25/2+) | 207.0 3 330.5 3 | 100 53 | E1 | 990.4 866.9 | (23/2-) (21/2+) | |
1344.4 6 | (27/2-) | 147.0 3 354.0 3 ? | 74 100 | 1197.4 990.4 | (25/2+) (23/2-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - 5/2[752] | |||||||
103.61 11 | (5/2)- | ||||||
146.81 20 | (7/2)- | 146.8 2 | | E1 | 0.0 | 5/2+ | |
210.9 4 | (11/2+) | 89.0 3 | 100 | 121.95 | (9/2+) | ||
341.5 5 | (13/2-) | 130.6 3 | 100 | E1 | 210.9 | (11/2+) | |
438.0 5 | (15/2+) | 96.5 3 | 100 | E1 | 341.5 | (13/2-) | |
566.0 5 | (17/2-) | ||||||
711.6 5 | (19/2+) | 145.6 3 273.6 3 | 100 43 | E1 | 566.0 438.0 | (17/2-) (15/2+) | |
849.6 5 | (21/2-) | 138.0 3 161.2 3 283.6 3 | 100 32 25 | E1 E2 | 711.6 688.4 566.0 | (19/2+) (19/2-) (17/2-) | |
1025.9 5 | (23/2+) | 176.3 3 314.3 3 | 100 43 | E1 | 849.6 711.6 | (21/2-) (19/2+) | |
1180.5 6 | (25/2-) | 154.6 3 330.9 3 | 100 84 | E2 | 1025.9 849.6 | (23/2+) (21/2-) | |
1375.8 6 | (27/2+) | 195.2 3 349.8 3 ? | 100 47 | 1180.5 1025.9 | (25/2-) (23/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - K=3/2 | |||||||
321.39 9 | (3/2)+ | ||||||
359.02 8 | (5/2)+ | 212.0 305.9 1 359.0 1 | 4.4 22 100 10 100 12 | M1 M1 | 146.81 53.14 0.0 | (7/2)- (7/2)+ 5/2+ |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
53.14 | (7/2)+ | 53.2 2 | M1(+E2) | 0.22 +10-22 | 29 | α=29 8 | |
103.61 | (5/2)- | 103.5 2 | E1 | 0.1022 | α=0.1022 | ||
121.95 | (9/2+) | 68.8 2 | (M1) | 9.77 | α=9.77 | ||
146.81 | (7/2)- | 146.8 2 | E1 | 0.1919 | α=0.1919 | ||
299.16 | (7/2)+ | 246.0 1 | M1 | 1.294 | α=1.294 | ||
(7/2)+ | 299.2 1 | M1 | 0.753 | α=0.753 | |||
321.39 | (3/2)+ | 217.7 2 | (E1) | 0.0744 | α=0.0744 | ||
(3/2)+ | 321.4 1 | M1 | 0.619 | α=0.619 | |||
359.02 | (5/2)+ | 305.9 1 | M1 | 0.709 | α=0.709 | ||
(5/2)+ | 359.0 1 | M1 | 0.458 | α=0.458 | |||
450.33 | (5/2-) | 151.2 2 | (E1) | 0.179 | α=0.179 | ||
485.41 | (3/2-,5/2-) | 126.4 2 | (E1) | 0.277 | α=0.277 | ||
(3/2-,5/2-) | 164.0 2 | (E1) | 0.1471 | α=0.1471 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 5/2+ | 28 s 2 % α = 100 | Q=1.98 11 (1989Ne03,2005St24), μ=-0.1799 17 (1988Ah02,2005St24) 14C decay was not observed: <1.2×10-11 % (1986Ba26,1985Pr01). E(level): 14C decay was not observed: <1.2×10-11 % (1986Ba26,1985Pr01). 5/2[633]. |
53.14 | (7/2)+ | E(level): 5/2[633]. | |
103.61 | (5/2)- | E(level): 5/2[752]. | |
121.95 | (9/2+) | E(level): 5/2[633]. | |
146.81 | (7/2)- | E(level): 5/2[752]. | |
210.9 | (11/2+) | E(level): 5/2[752]. | |
318.9 | (13/2+) | E(level): 5/2[633]. | |
321.39 | (3/2)+ | E(level): K=3/2. | |
341.5 | (13/2-) | E(level): 5/2[752]. | |
359.02 | (5/2)+ | E(level): K=3/2. | |
438.0 | (15/2+) | E(level): 5/2[752]. | |
440.4 | (15/2-) | E(level): 5/2[633]. | |
566.0 | (17/2-) | E(level): 5/2[752]. | |
573.1 | (17/2+) | E(level): 5/2[633]. | |
688.4 | (19/2-) | E(level): 5/2[633]. | |
711.6 | (19/2+) | E(level): 5/2[752]. | |
849.6 | (21/2-) | E(level): 5/2[752]. | |
866.9 | (21/2+) | E(level): 5/2[633]. | |
990.4 | (23/2-) | E(level): 5/2[633]. | |
1025.9 | (23/2+) | E(level): 5/2[752]. | |
1180.5 | (25/2-) | E(level): 5/2[752]. | |
1197.4 | (25/2+) | E(level): 5/2[633]. | |
1344.4 | (27/2-) | E(level): 5/2[633]. | |
1375.8 | (27/2+) | E(level): 5/2[752]. |