ADOPTED LEVELS, GAMMAS for 218Ra
Authors: Balraj Singh, M.S. Basunia, Murray Martin Et Al., | Citation: Nucl. Data Sheets 160, 405 (2019) | Cutoff date: 30-Oct-2019
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-4190 keV 50 | S(n)= 7310 keV 13 | S(p)= 4952 keV 13 | Q(α)= 8546 keV 6 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 222Th α decay (1.964 MS) | B | 208Pb(13C,3nγ),(14C,4nγ), |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | AB | 0+ | 25.91 µs 14 % α = 100 | |||||
| 388.90 10 | AB | 2+ | 29.8 ps 28 | 388.9 1 | 100 | E2 | 0.0 | 0+ |
| 741.10 14 | B | 4+ | 19.4 ps 35 | 352.2 1 | 100 | E2 | 388.90 | 2+ |
| 793.21 18 | AB | (3-) | 404.3 2 | 100 | D | 388.90 | 2+ | |
| 853 6 | A | (1-) | 853 | | 0.0 | 0+ | ||
| 1038.32 18 | B | 5- | 245.1 2 297.3 2 | | E1 | 793.21 741.10 | (3-) 4+ | |
| 1122.04 20 | B | 6+ | 13.2 ps 28 | 83.7 2 380.9 2 | 35 7 100 6 | (E1) E2 | 1038.32 741.10 | 5- 4+ |
| 1340.85 21 | B | 7- | 218.8 1 302.6 2 | 100 5 8.7 22 | E1 E2 | 1122.04 1038.32 | 6+ 5- | |
| 1546.70 23 | B | 8+ | 205.8 2 424.6 2 | 100 7 71 20 | E1 E2 | 1340.85 1122.04 | 7- 6+ | |
| 1573.01 19 | B | (3-,4,5-) | 534.7 2 779.8 2 831.9 2 | | 1038.32 793.21 741.10 | 5- (3-) 4+ | ||
| 1694.35 25 | B | 9- | 147.5 2 353.6 2 | 100 45 58 20 | E2 | 1546.70 1340.85 | 8+ 7- | |
| 1714.60 25 | B | 973.5 2 | | 741.10 | 4+ | |||
| 1725.8 3 | B | 687.5 2 | 100 | 1038.32 | 5- | |||
| 1803.60 24 | B | 462.7 2 681.6 2 | | 1340.85 1122.04 | 7- 6+ | |||
| 1855.9 3 | B | 733.9 2 | 100 | 1122.04 | 6+ | |||
| 1896.8 3 | B | 350.1 2 | 100 | 1546.70 | 8+ | |||
| 1961.7 3 | B | 10+ | 267.3 1 415.0 2 | 100 5 36 9 | E1 E2 | 1694.35 1546.70 | 9- 8+ | |
| 2031.8 3 | B | 337.5 2 | 100 | 1694.35 | 9- | |||
| 2109.3 3 | B | 11- | 77.5 2 147.5 2 415.0 2 | 42 42 100 25 | E2 | 2031.8 1961.7 1694.35 | 10+ 9- | |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 2328.3 4 | B | 472.4 2 | 100 | 1855.9 | ||||
| 2390.8 3 | B | 12+ | < 1.4 ps | 281.4 2 429.3 2 | 100 7 33 7 | E1 E2 | 2109.3 1961.7 | 11- 10+ |
| 2420.0 3 | B | (12-) | 310.6 2 | 100 | (M1+E2) | 2109.3 | 11- | |
| 2442.4 4 | B | 410.6 2 | 100 | 2031.8 | ||||
| 2465.6 3 | B | 503.9 2 568.8 2 | | 1961.7 1896.8 | 10+ | |||
| 2526.3 3 | B | 13- | < 4.9 ps | 106.1 2 135.6 2 416.9 2 | 33 3 100 27 | E1 E2 | 2420.0 2390.8 2109.3 | (12-) 12+ 11- |
| 2825.5 3 | B | 14+ | < 1.4 ps | 299.3 2 434.8 2 | 100 28 <45 | E1 E2 | 2526.3 2390.8 | 13- 12+ |
| 2966.4 4 | B | 15- | < 1.4 ps | 140.9 2 440.0 2 | 32 5 100 5 | E1 E2 | 2825.5 2526.3 | 14+ 13- |
| 2967.2 4 | B | (14-) | 142 440.8 2 547.3 2 | | E2 | 2825.5 2526.3 2420.0 | 14+ 13- (12-) | |
| 3285.1 4 | B | 16+ | 318.7 459.7 | 100 20 60 20 | 2966.4 2825.5 | 15- 14+ | ||
| 3387.7 7 | B | (16-) | 420.5 | 100 | 2967.2 | (14-) | ||
| 3388.8 4 | B | 17- | < 13 ps | 104 422.4 2 | | E2 | 3285.1 2966.4 | 16+ 15- |
| 3719.8 7 | B | (18-) | 331 332.1 3 | | 3388.8 3387.7 | 17- (16-) | ||
| 3756.0 7 | B | 18+ | 367 471? | | 3388.8 3285.1 | 17- 16+ | ||
| 3805.9 8 | B | 19- | 50 86 417 | | 3756.0 3719.8 3388.8 | 18+ (18-) 17- | ||
| 4117.7 9 | B | (20-) | 312 398 | | 3805.9 3719.8 | 19- (18-) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 4191.1 11 ? | B | (20+) | 385 434.8 2 | | 3805.9 3756.0 | 19- 18+ | ||
| 4212.6 10 | B | (21-) | 406.6 | 100 | 3805.9 | 19- | ||
| 4391.6 11 | B | (21+) | 274 | 100 | 4117.7 | (20-) | ||
| 4588.3 11 | B | (22+) | 376 397? | | 4212.6 4191.1 | (21-) (20+) | ||
| 4675.3 10 | B | (23-) | 87 462.7 | | 4588.3 4212.6 | (22+) (21-) | ||
| 4682.6 10 | B | (22-) | 291? 470 565 | | 4391.6 4212.6 4117.7 | (21+) (21-) (20-) | ||
| 4835.5 11 | B | (23+) | 153 247 444 | | 4682.6 4588.3 4391.6 | (22-) (22+) (21+) | ||
| 5020.3 12 | B | (24+) | 345 432 | | 4675.3 4588.3 | (23-) (22+) | ||
| 5125.4 13 | B | (25-) | 105 450 | | 5020.3 4675.3 | (24+) (23-) | ||
| 5139.4 11 | B | (24-) | 304 457 464? | | 4835.5 4682.6 4675.3 | (23+) (22-) (23-) | ||
| 5363.5 13 | B | (25+) | 224 528 | | 5139.4 4835.5 | (24-) (23+) | ||
| 5470.1 13 | B | (26+) | 345 450 | | 5125.4 5020.3 | (25-) (24+) | ||
| 5588.1 13 | B | (27-) | 118 463 | | 5470.1 5125.4 | (26+) (25-) | ||
| 5901.7 14 | B | (28+) | 313 432 | | 5588.1 5470.1 | (27-) (26+) | ||
| 6134.9 15 | B | (29-) | 233 547 | | 5901.7 5588.1 | (28+) (27-) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 6343.8 15 | B | (30+) | 209 442 | | 6134.9 5901.7 | (29-) (28+) | ||
| 6678.8 16 | B | (31-) | 335 544 | | 6343.8 6134.9 | (30+) (29-) | ||
E(level): From a least-squares fit to the adopted Eγ data except for the 853 level which comes from the E(α) branch to that level
Jπ(level): From γ(θ) and γ(lin pol) data in 208Pb(13C,3nγ), and association of levels in bands or sequences. Additional γ mult arguments are given explicitly.
T1/2(level): From recoil-distance Doppler-shift method in inverse kinematic reaction: 13C(208Pb,3nγ)(1988Ga33). No delayed component with a half-life longer than 5 ns was observed for any of the transitions (1986Go21).
M(γ): From γ(θ) and γ(lin pol) data in 208Pb(13C,3nγ)
| 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 | 0+ | 25.91 µs 14 % α = 100 | |||||
| 388.90 10 | 2+ | 29.8 ps 28 | 388.9 1 | 100 | E2 | 0.0 | 0+ |
| 741.10 14 | 4+ | 19.4 ps 35 | 352.2 1 | 100 | E2 | 388.90 | 2+ |
| 1122.04 20 | 6+ | 13.2 ps 28 | 83.7 2 380.9 2 | 35 7 100 6 | (E1) E2 | 1038.32 741.10 | 5- 4+ |
| 1546.70 23 | 8+ | 205.8 2 424.6 2 | 100 7 71 20 | E1 E2 | 1340.85 1122.04 | 7- 6+ | |
| 1961.7 3 | 10+ | 267.3 1 415.0 2 | 100 5 36 9 | E1 E2 | 1694.35 1546.70 | 9- 8+ | |
| 2390.8 3 | 12+ | < 1.4 ps | 281.4 2 429.3 2 | 100 7 33 7 | E1 E2 | 2109.3 1961.7 | 11- 10+ |
| 2825.5 3 | 14+ | < 1.4 ps | 299.3 2 434.8 2 | 100 28 <45 | E1 E2 | 2526.3 2390.8 | 13- 12+ |
| 3285.1 4 | 16+ | 318.7 459.7 | 100 20 60 20 | 2966.4 2825.5 | 15- 14+ | ||
| 3756.0 7 | 18+ | 367 471? | | 3388.8 3285.1 | 17- 16+ | ||
| 4191.1 11 | (20+) | 385 434.8 2 | | 3805.9 3756.0 | 19- 18+ | ||
| 4588.3 11 | (22+) | 376 397? | | 4212.6 4191.1 | (21-) (20+) | ||
| 5020.3 12 | (24+) | 345 432 | | 4675.3 4588.3 | (23-) (22+) | ||
| 5470.1 13 | (26+) | 345 450 | | 5125.4 5020.3 | (25-) (24+) | ||
| 5901.7 14 | (28+) | 313 432 | | 5588.1 5470.1 | (27-) (26+) | ||
| 6343.8 15 | (30+) | 209 442 | | 6134.9 5901.7 | (29-) (28+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - Octupole band | |||||||
| 793.21 18 | (3-) | ||||||
| 853 6 | (1-) | 853 | | 0.0 | 0+ | ||
| 1038.32 18 | 5- | 245.1 2 297.3 2 | | E1 | 793.21 741.10 | (3-) 4+ | |
| 1340.85 21 | 7- | 218.8 1 302.6 2 | 100 5 8.7 22 | E1 E2 | 1122.04 1038.32 | 6+ 5- | |
| 1694.35 25 | 9- | 147.5 2 353.6 2 | 100 45 58 20 | E2 | 1546.70 1340.85 | 8+ 7- | |
| 2109.3 3 | 11- | 77.5 2 147.5 2 415.0 2 | 42 42 100 25 | E2 | 2031.8 1961.7 1694.35 | 10+ 9- | |
| 2526.3 3 | 13- | < 4.9 ps | 106.1 2 135.6 2 416.9 2 | 33 3 100 27 | E1 E2 | 2420.0 2390.8 2109.3 | (12-) 12+ 11- |
| 2966.4 4 | 15- | < 1.4 ps | 140.9 2 440.0 2 | 32 5 100 5 | E1 E2 | 2825.5 2526.3 | 14+ 13- |
| 3388.8 4 | 17- | < 13 ps | 104 422.4 2 | | E2 | 3285.1 2966.4 | 16+ 15- |
| 3805.9 8 | 19- | 50 86 417 | | 3756.0 3719.8 3388.8 | 18+ (18-) 17- | ||
| 4212.6 10 | (21-) | 406.6 | 100 | 3805.9 | 19- | ||
| 4675.3 10 | (23-) | 87 462.7 | | 4588.3 4212.6 | (22+) (21-) | ||
| 5125.4 13 | (25-) | 105 450 | | 5020.3 4675.3 | (24+) (23-) | ||
| 5588.1 13 | (27-) | 118 463 | | 5470.1 5125.4 | (26+) (25-) | ||
| 6134.9 15 | (29-) | 233 547 | | 5901.7 5588.1 | (28+) (27-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| 6678.8 16 | (31-) | 335 544 | | 6343.8 6134.9 | (30+) (29-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 3 - γ sequence based on 12- | |||||||
| 2420.0 3 | (12-) | ||||||
| 2967.2 4 | (14-) | 142 440.8 2 547.3 2 | | E2 | 2825.5 2526.3 2420.0 | 14+ 13- (12-) | |
| 3387.7 7 | (16-) | 420.5 | 100 | 2967.2 | (14-) | ||
| 3719.8 7 | (18-) | 331 332.1 3 | | 3388.8 3387.7 | 17- (16-) | ||
| 4117.7 9 | (20-) | 312 398 | | 3805.9 3719.8 | 19- (18-) | ||
| 4682.6 10 | (22-) | 291? 470 565 | | 4391.6 4212.6 4117.7 | (21+) (21-) (20-) | ||
| 5139.4 11 | (24-) | 304 457 464? | | 4835.5 4682.6 4675.3 | (23+) (22-) (23-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 4 - γ sequence based on (21+) | |||||||
| 4391.6 11 | (21+) | ||||||
| 4835.5 11 | (23+) | 153 247 444 | | 4682.6 4588.3 4391.6 | (22-) (22+) (21+) | ||
| 5363.5 13 | (25+) | 224 528 | | 5139.4 4835.5 | (24-) (23+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 388.90 | 2+ | 29.8 ps 28 | 388.9 1 | E2 | 0.0727 | B(E2)(W.u.)=25.5 24, α=0.0727 |
| 741.10 | 4+ | 19.4 ps 35 | 352.2 1 | E2 | 0.0954 | B(E2)(W.u.)=63 12, α=0.0954 |
| 1038.32 | 5- | 297.3 2 | E1 | 0.0359 | α=0.0359 | |
| 1122.04 | 6+ | 13.2 ps 28 | 83.7 2 | (E1) | 0.177 | B(E1)(W.u.)=0.0057 17, α=0.177 3 |
| 6+ | 13.2 ps 28 | 380.9 2 | E2 | 0.0769 | B(E2)(W.u.)=46 11, α=0.0769 | |
| 1340.85 | 7- | 218.8 1 | E1 | 0.0729 | α=0.0729 | |
| 7- | 302.6 2 | E2 | 0.1482 | α=0.1482 | ||
| 1546.70 | 8+ | 205.8 2 | E1 | 0.0843 | α=0.0843 | |
| 8+ | 424.6 2 | E2 | 0.0578 | α=0.0578 | ||
| 1694.35 | 9- | 147.5 2 | 0.190 | α=0.190 | ||
| 9- | 353.6 2 | E2 | 0.0943 | α=0.0943 | ||
| 1961.7 | 10+ | 267.3 1 | E1 | 0.0457 | α=0.0457 | |
| 10+ | 415.0 2 | E2 | 0.0613 | α=0.0613 | ||
| 2109.3 | 11- | 147.5 2 | 0.190 | α=0.190 | ||
| 11- | 415.0 2 | E2 | 0.0613 | α=0.0613 | ||
| 2390.8 | 12+ | < 1.4 ps | 281.4 2 | E1 | 0.0407 | B(E1)(W.u.)>0.004, α=0.0407 |
| 12+ | < 1.4 ps | 429.3 2 | E2 | 0.0562 | B(E2)(W.u.)>84, α=0.0562 | |
| 2420.0 | (12-) | 310.6 2 | (M1+E2) | 0.4 | α=0.4 3 | |
| 2526.3 | 13- | < 4.9 ps | 135.6 2 | E1 | 0.230 | B(E1)(W.u.)>0.0034, α=0.230 |
| 13- | < 4.9 ps | 416.9 2 | E2 | 0.0606 | B(E2)(W.u.)>80, α=0.0606 | |
| 2825.5 | 14+ | < 1.4 ps | 299.3 2 | E1 | 0.0354 | B(E1)(W.u.)>0.0035, α=0.0354 |
| 14+ | < 1.4 ps | 434.8 2 | E2 | 0.0544 | α=0.0544 | |
| 2966.4 | 15- | < 1.4 ps | 140.9 2 | E1 | 0.210 | B(E1)(W.u.)>0.011, α=0.210 |
| 15- | < 1.4 ps | 440.0 2 | E2 | 0.0528 | B(E2)(W.u.)>218, α=0.0528 | |
| 2967.2 | (14-) | 547.3 2 | E2 | 0.0313 | α=0.0313 | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 3388.8 | 17- | < 13 ps | 422.4 2 | E2 | 0.0586 | α=0.0586 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 25.91 µs 14 % α = 100 | E(level): Kπ=0+ g.s. band. |
| 388.90 | 2+ | 29.8 ps 28 | E(level): Kπ=0+ g.s. band. |
| 741.10 | 4+ | 19.4 ps 35 | E(level): Kπ=0+ g.s. band. |
| 793.21 | (3-) | E(level): Octupole band. | |
| 853 | (1-) | E(level): Octupole band. | |
| 1038.32 | 5- | E(level): Octupole band. | |
| 1122.04 | 6+ | 13.2 ps 28 | E(level): Kπ=0+ g.s. band. |
| 1340.85 | 7- | E(level): Octupole band. | |
| 1546.70 | 8+ | E(level): Kπ=0+ g.s. band. | |
| 1694.35 | 9- | E(level): Octupole band. | |
| 1961.7 | 10+ | E(level): Kπ=0+ g.s. band. | |
| 2109.3 | 11- | E(level): Octupole band. | |
| 2390.8 | 12+ | < 1.4 ps | E(level): Kπ=0+ g.s. band. |
| 2526.3 | 13- | < 4.9 ps | E(level): Octupole band. |
| 2825.5 | 14+ | < 1.4 ps | E(level): Kπ=0+ g.s. band. |
| 2966.4 | 15- | < 1.4 ps | E(level): Octupole band. |
| 3285.1 | 16+ | E(level): Kπ=0+ g.s. band. | |
| 3388.8 | 17- | < 13 ps | E(level): Octupole band. |
| 3756.0 | 18+ | E(level): Kπ=0+ g.s. band. | |
| 3805.9 | 19- | E(level): Octupole band. | |
| 4191.1 | (20+) | E(level): Kπ=0+ g.s. band. | |
| 4212.6 | (21-) | E(level): Octupole band. | |
| 4588.3 | (22+) | E(level): Kπ=0+ g.s. band. | |
| 4675.3 | (23-) | E(level): Octupole band. | |
| 5020.3 | (24+) | E(level): Kπ=0+ g.s. band. | |
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 5125.4 | (25-) | E(level): Octupole band. | |
| 5470.1 | (26+) | E(level): Kπ=0+ g.s. band. | |
| 5588.1 | (27-) | E(level): Octupole band. | |
| 5901.7 | (28+) | E(level): Kπ=0+ g.s. band. | |
| 6134.9 | (29-) | E(level): Octupole band. | |
| 6343.8 | (30+) | E(level): Kπ=0+ g.s. band. | |
| 6678.8 | (31-) | E(level): Octupole band. |
| E(level) | E(gamma) | Comments |
| 1694.35 | 147.5 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided |
| 1961.7 | 415.0 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided |
| 2109.3 | 147.5 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided | 415.0 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided |
| 2825.5 | 434.8 | E(γ): double placement, with intensity not divided. Multiply placed |
| 4191.1 | 434.8 | E(γ): double placement, with intensity not divided. Multiply placed |
| 4675.3 | 462.7 | E(γ): Multiply placed |
| 5020.3 | 345 | E(γ): Multiply placed | 432 | E(γ): Multiply placed |
| 5125.4 | 450 | E(γ): Multiply placed |
| 5470.1 | 345 | E(γ): Multiply placed | 450 | E(γ): Multiply placed |
| 5588.1 | 463 | E(γ): Multiply placed |
| 5901.7 | 432 | E(γ): Multiply placed |
Theory references: consult NSR database (www.nndc.bnl.gov/nsr/) for 62 primary references for nuclear structure, and 42 for calculations of half-lives of radioactive decays
From lifetime measurements, 1988Ga33 conclude that higher spin states exhibit enhanced B(E1) rates of about 0.006 which may be a result of collective dipole deexcitations from a reflection- asymmetric intrinsic state.
Q-value: S(2n)=12783 14, S(2p)=8180 13 (2017Wa10)