ADOPTED LEVELS, GAMMAS for 224Rn
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-)=696 keV 15 | S(n)= 6016 keV 13 | S(p)= 8272 keV 17 | Q(α)= 4757 keV 20 | ||
Reference: 2021WA16 |
References: | |||
A | 120Sn(224Rn,224Rn’γ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
0 | A | 0+ | 107 m 3 % β- = 100 | |||
135.6 5 | A | (2+) | 135.6 5 | 0 | 0+ | |
357.6 6 | A | (4+) | 222.0 5 | 135.6 | (2+) | |
641.4 8 | A | (6+) | 283.8 5 | 357.6 | (4+) | |
650.6 8 | A | (3-) | 515.0 6 | 135.6 | (2+) | |
790.8 8 | A | (5-) | 140? 433.2 5 | 650.6 357.6 | (3-) (4+) | |
969.2 9 | A | (8+) | 327.8 5 | 641.4 | (6+) | |
1006.4 10 | A | (7-) | 216? 365.0 5 | 790.8 641.4 | (5-) (6+) | |
1277.2 10 | A | (9-) | 271? 308.0 5 | 1006.4 969.2 | (7-) (8+) | |
1327.8 10 | A | (10+) | 358.6 5 | 969.2 | (8+) | |
1588.3 13 | A | (11-) | 260.5 8 311 | 1327.8 1277.2 | (10+) (9-) | |
1706.8 11 | A | (12+) | 379.1 5 | 1327.8 | (10+) | |
2098.7 13 ? | A | (14+) | 391.8 6 ? | 1706.8 | (12+) |
E(level): From 120Sn(224Rn,224Rn’γ)
Jπ(level): As proposed by 2020Bu20 in 120Sn(224Rn,224Rn’γ), based on population of levels in an even-even nucleus in Coulomb excitation process with expected E2 excitations, and band associations. Evaluators assign Jπ values for excited states in parentheses as supporting arguments, in terms of transition multipolarities from angular distributions or correlations, linear polarizations, or conversion electron measurements are not yet available.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | Final Levels | |||
Band 1 - g.s. band | |||||||
0 | 0+ | 107 m 3 % β- = 100 | |||||
135.6 5 | (2+) | 135.6 5 | 0 | 0+ | |||
357.6 6 | (4+) | 222.0 5 | 135.6 | (2+) | |||
641.4 8 | (6+) | 283.8 5 | 357.6 | (4+) | |||
969.2 9 | (8+) | 327.8 5 | 641.4 | (6+) | |||
1327.8 10 | (10+) | 358.6 5 | 969.2 | (8+) | |||
1706.8 11 | (12+) | 379.1 5 | 1327.8 | (10+) | |||
2098.7 13 | (14+) | 391.8 6 ? | 1706.8 | (12+) | |||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | Final Levels | |||
Band 2 - Octupole band based on (3-) | |||||||
650.6 8 | (3-) | ||||||
790.8 8 | (5-) | 140? 433.2 5 | 650.6 357.6 | (3-) (4+) | |||
1006.4 10 | (7-) | 216? 365.0 5 | 790.8 641.4 | (5-) (6+) | |||
1277.2 10 | (9-) | 271? 308.0 5 | 1006.4 969.2 | (7-) (8+) | |||
1588.3 13 | (11-) | 260.5 8 311 | 1327.8 1277.2 | (10+) (9-) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 0+ | 107 m 3 % β- = 100 | E(level): g.s. band. |
135.6 | (2+) | E(level): g.s. band. | |
357.6 | (4+) | E(level): g.s. band. | |
641.4 | (6+) | E(level): g.s. band. | |
650.6 | (3-) | E(level): Octupole band based on (3-). | |
790.8 | (5-) | E(level): Octupole band based on (3-). | |
969.2 | (8+) | E(level): g.s. band. | |
1006.4 | (7-) | E(level): Octupole band based on (3-). | |
1277.2 | (9-) | E(level): Octupole band based on (3-). | |
1327.8 | (10+) | E(level): g.s. band. | |
1588.3 | (11-) | E(level): Octupole band based on (3-). | |
1706.8 | (12+) | E(level): g.s. band. | |
2098.7 | (14+) | E(level): g.s. band. |
1961Be28 (also 1961Po06): 224Rn produced and identified in 232Th(p,X),E=230 MeV, followed by chemical separation; but half- life of 4.9 h reported in this work is in disagreement with later measurements.
1964Bu02: 224Rn produced and identified in 232Th(p,X),E=660 MeV; measured half-life.
Mass measurements:
2012Ch19 (also 2008ChZI): precise mass measurement by Schottky Mass Spectrometry
2009Ne03: measured mass using ISOLTRAP mass spectrometer
Theoretical calculations: 22 references extracted from the NSR database are listed in document records.
Q-value: S(2n)=10069 10, S(2p)=14620 40 (2021Wa16)