ADOPTED LEVELS, GAMMAS for 217Ra
Authors: E.A. Mccutchan, S.K. Rathi, S. Garg | Citation: Nucl. Data Sheets 147, 382 (2018) | Cutoff date: 1-DEC-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-2814 keV 13 | S(n)= 5473 keV 11 | S(p)= 4370 keV 8 | Q(α)= 9161 keV 6 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 221Th α decay | B | (HI,xnγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | AB | (9/2+) | 1.6 µs 2 % α ≈ 100 | |||||
| 209 11 ? | A | |||||||
| 330.79 18 | AB | (11/2+) | 330.8 2 | 100 | M1+E2 | 0.0 | (9/2+) | |
| 539.61 18 | B | (13/2+) | 208.6? 539.6 2 | | (E2) | 330.79 0.0 | (11/2+) (9/2+) | |
| 666.21 23 | B | (15/2-) | 126.6 2 | 100 | E1 | 539.61 | (13/2+) | |
| 754 6 | A | (7/2+) | ||||||
| 931.08 24 | B | (15/2+) | 391.2 600.3 2 | | (E2) | 539.61 330.79 | (13/2+) (11/2+) | |
| 1001.91 23 | B | (17/2+) | 335.7 2 462.3 2 | 100 74 | E1 (E2) | 666.21 539.61 | (15/2-) (13/2+) | |
| 1050.2 4 | B | 119.1 5 | 100 | 931.08 | (15/2+) | |||
| 1173.0 3 | B | (19/2-) | 171.1 5 506.8 2 | 39 100 | E1 (E2) | 1001.91 666.21 | (17/2+) (15/2-) | |
| 1337.5 3 | B | (19/2+) | 287.3 5 335.6 5 406.4 2 | 8 19 100 | (M1) (E2) | 1050.2 1001.91 931.08 | (17/2+) (15/2+) | |
| 1454.4 3 | B | (21/2+) | 281.4 2 452.5 2 | 100 97 | E1 (E2) | 1173.0 1001.91 | (19/2-) (17/2+) | |
| 1611.2 4 | B | (23/2-) | 156.8 5 438.2 5 | 35 100 | E1 (E2) | 1454.4 1173.0 | (21/2+) (19/2-) | |
| 1667.5 3 | B | (23/2+) | 213.0 5 330.0 2 | 37 100 | M1 (E2) | 1454.4 1337.5 | (21/2+) (19/2+) | |
| 1896.4 4 | B | (27/2+) | 0.29 ns 14 | 228.9 2 | 100 | E2 | 1667.5 | (23/2+) |
| 1971.3 11 ? | B | 360.1? | 100 | 1611.2 | (23/2-) | |||
| 2029.7 5 | B | (27/2-) | 418.5 5 | 100 | (E2) | 1611.2 | (23/2-) | |
| 2301.1 4 | B | (29/2+) | 0.30 ns 14 | 271.3 404.7 2 | | E2(+M1) | 2029.7 1896.4 | (27/2-) (27/2+) |
| 2304.7 11 ? | B | 275? | 100 | 2029.7 | (27/2-) | |||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 2393.5 6 | B | (33/2+) | 4.62 ns 6 | 92.5 5 | 100 | E2 | 2301.1 | (29/2+) |
| 2521.3 6 | B | (31/2-) | 220.2? 491.6 5 | | 2301.1 2029.7 | (29/2+) (27/2-) | ||
| 2830.1 8 ? | B | 437? 528.6? | | 2393.5 2301.1 | (33/2+) (29/2+) | |||
| 2831.9 12 ? | B | (37/2+) | 438.4? | 100 | 2393.5 | (33/2+) | ||
| 2894.8 8 ? | B | (37/2+) | 501.3 5 ? | 100 | (E2) | 2393.5 | (33/2+) | |
| 3132.2 7 | B | (35/2) | 738.8 5 | 100 | 2393.5 | (33/2+) | ||
| 3257.5 6 | B | (37/2+) | 125.4 5 864.0 2 | | (E2) | 3132.2 2393.5 | (35/2) (33/2+) | |
| 3506.1 7 | B | (39/2) | 248.6 5 374.0 5 | 100 25 | D (E2) | 3257.5 3132.2 | (37/2+) (35/2) | |
| 3628.8 7 | B | (41/2+) | 122.7 5 371.3 2 | 28 100 | (E2) | 3506.1 3257.5 | (39/2) (37/2+) | |
| 3825.4 8 | B | (45/2+) | 1.49 ns 7 | 196.6 5 | 100 | (E2) | 3628.8 | (41/2+) |
| 4185.5 9 | B | (47/2) | 360.1 2 | 100 | D | 3825.4 | (45/2+) | |
| 4327.2 13 ? | B | 141.7? | 100 | 4185.5 | (47/2) | |||
| 4344.4 13 ? | B | 519.0? | 100 | 3825.4 | (45/2+) | |||
| 4822.6 14 ? | B | 495.4 5 | 100 | 4327.2 | ||||
| 4999.3 15 ? | B | 176.7 5 | 100 | 4822.6 | ||||
E(level): From a least-squares fit to Eγ, by evaluators, except where noted.
T1/2(level): From γ(t) in (HI,xnγ), except where noted.
M(γ): From γ(θ) and conversion electron measurements in (HI,xnγ), except where noted.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - configuration=(ν g9/2)+3 | |||||||
| 0.0 | (9/2+) | 1.6 µs 2 % α ≈ 100 | |||||
| 539.61 18 | (13/2+) | ||||||
| 1001.91 23 | (17/2+) | 335.7 2 462.3 2 | 100 74 | E1 (E2) | 666.21 539.61 | (15/2-) (13/2+) | |
| 1454.4 3 | (21/2+) | 281.4 2 452.5 2 | 100 97 | E1 (E2) | 1173.0 1001.91 | (19/2-) (17/2+) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - configuration=((ν g9/2)+2(ν i11/2)) | |||||||
| 330.79 18 | (11/2+) | ||||||
| 931.08 24 | (15/2+) | ||||||
| 1337.5 3 | (19/2+) | 287.3 5 335.6 5 406.4 2 | 8 19 100 | (M1) (E2) | 1050.2 1001.91 931.08 | (17/2+) (15/2+) | |
| 1667.5 3 | (23/2+) | 213.0 5 330.0 2 | 37 100 | M1 (E2) | 1454.4 1337.5 | (21/2+) (19/2+) | |
| 1896.4 4 | (27/2+) | 0.29 ns 14 | 228.9 2 | 100 | E2 | 1667.5 | (23/2+) |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 3 - configuration=((ν g9/2)+2(ν j15/2)) | |||||||
| 666.21 23 | (15/2-) | ||||||
| 1173.0 3 | (19/2-) | ||||||
| 1611.2 4 | (23/2-) | 156.8 5 438.2 5 | 35 100 | E1 (E2) | 1454.4 1173.0 | (21/2+) (19/2-) | |
| 2029.7 5 | (27/2-) | 418.5 5 | 100 | (E2) | 1611.2 | (23/2-) | |
| 2521.3 6 | (31/2-) | 220.2? 491.6 5 | | 2301.1 2029.7 | (29/2+) (27/2-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 4 - configuration=((ν i11/2)+2(ν g9/2)) | |||||||
| 2301.1 4 | (29/2+) | 0.30 ns 14 | |||||
| 2393.5 6 | (33/2+) | 4.62 ns 6 | |||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 330.79 | (11/2+) | 330.8 2 | M1+E2 | 0.33 | α=0.33 22, α(K)=0.25 19, α(L)=0.061 20, α(M)=0.0150 41, α(N)=0.0040 11, α(O)=8.9×10-4 26, α(P)=1.48E-4 52, α(Q)=9.0E-6 68 | |
| 539.61 | (13/2+) | 539.6 2 | (E2) | 0.0324 | α=0.0324, α(K)=0.0218 3, α(L)=0.00792 12, α(M)=0.00202 3, α(N)=0.000534 8, α(O)=0.0001175 17, α(P)=1.88×10-5 3, α(Q)=7.89E-7 11 | |
| 666.21 | (15/2-) | 126.6 2 | E1 | 0.272 | α=0.272, α(K)=0.212 3, α(L)=0.0450 7, α(M)=0.01082 16, α(N)=0.00282 5, α(O)=0.000618 9, α(P)=9.84×10-5 15, α(Q)=5.24E-6 8 | |
| 931.08 | (15/2+) | 600.3 2 | (E2) | 0.0255 | α=0.0255, α(K)=0.01775 25, α(L)=0.00577 9, α(M)=0.001462 21, α(N)=0.000386 6, α(O)=8.53×10-5 12, α(P)=1.380E-5 20, α(Q)=6.36E-7 9 | |
| 1001.91 | (17/2+) | 335.7 2 | E1 | 0.0274 | α=0.0274, α(K)=0.0221 4, α(L)=0.00399 6, α(M)=0.000948 14, α(N)=0.000248 4, α(O)=5.56×10-5 8, α(P)=9.32E-6 14, α(Q)=6.16E-7 9 | |
| (17/2+) | 462.3 2 | (E2) | 0.0467 | α=0.0467, α(K)=0.0294 5, α(L)=0.01289 19, α(M)=0.00333 5, α(N)=0.000879 13, α(O)=0.000193 3, α(P)=3.04×10-5 5, α(Q)=1.089E-6 16 | ||
| 1173.0 | (19/2-) | 171.1 5 | E1 | 0.1311 | α=0.1311 21, α(K)=0.1039 17, α(L)=0.0206 4, α(M)=0.00495 8, α(N)=0.001291 21, α(O)=0.000285 5, α(P)=4.63×10-5 8, α(Q)=2.66E-6 5 | |
| (19/2-) | 506.8 2 | (E2) | 0.0375 | α=0.0375, α(K)=0.0246 4, α(L)=0.00961 14, α(M)=0.00247 4, α(N)=0.000651 10, α(O)=0.0001430 21, α(P)=2.28×10-5 4, α(Q)=8.99E-7 13 | ||
| 1337.5 | (19/2+) | 335.6 5 | (M1) | 0.521 | α=0.521, α(K)=0.420 7, α(L)=0.0769 12, α(M)=0.0183 3, α(N)=0.00484 7, α(O)=0.001104 17, α(P)=0.000192 3, α(Q)=1.508×10-5 22 | |
| (19/2+) | 406.4 2 | (E2) | 0.0648 | α=0.0648, α(K)=0.0380 6, α(L)=0.0198 3, α(M)=0.00517 8, α(N)=0.001366 20, α(O)=0.000298 5, α(P)=4.65×10-5 7, α(Q)=1.434E-6 21 | ||
| 1454.4 | (21/2+) | 281.4 2 | E1 | 0.0407 | α=0.0407, α(K)=0.0327 5, α(L)=0.00603 9, α(M)=0.001437 21, α(N)=0.000376 6, α(O)=8.39×10-5 12, α(P)=1.397E-5 20, α(Q)=8.93E-7 13 | |
| (21/2+) | 452.5 2 | (E2) | 0.0493 | α=0.0493, α(K)=0.0307 5, α(L)=0.01383 20, α(M)=0.00358 5, α(N)=0.000944 14, α(O)=0.000207 3, α(P)=3.26×10-5 5, α(Q)=1.140E-6 16 | ||
| 1611.2 | (23/2-) | 156.8 5 | E1 | 0.162 | α=0.162 3, α(K)=0.1278 21, α(L)=0.0258 5, α(M)=0.00619 10, α(N)=0.00161 3, α(O)=0.000356 6, α(P)=5.76×10-5 10, α(Q)=3.24E-6 5 | |
| (23/2-) | 438.2 5 | (E2) | 0.0534 | α=0.0534, α(K)=0.0327 5, α(L)=0.01538 23, α(M)=0.00399 6, α(N)=0.001053 16, α(O)=0.000230 4, α(P)=3.62×10-5 6, α(Q)=1.220E-6 18 | ||
| 1667.5 | (23/2+) | 213.0 5 | M1 | 1.83 | α=1.83, α(K)=1.475 23, α(L)=0.272 5, α(M)=0.0650 10, α(N)=0.0172 3, α(O)=0.00391 6, α(P)=0.000682 11, α(Q)=5.35×10-5 9 | |
| (23/2+) | 330.0 2 | (E2) | 0.1148 | α=0.1148, α(K)=0.0582 9, α(L)=0.0419 6, α(M)=0.01106 16, α(N)=0.00292 5, α(O)=0.000633 9, α(P)=9.71×10-5 14, α(Q)=2.27E-6 4 | ||
| 1896.4 | (27/2+) | 0.29 ns 14 | 228.9 2 | E2 | 0.364 | B(E2)(W.u.)=29 15, α=0.364, α(K)=0.1238 18, α(L)=0.177 3, α(M)=0.0475 7, α(N)=0.01255 19, α(O)=0.00270 4, α(P)=0.000403 6, α(Q)=5.34E-6 8 |
| 2029.7 | (27/2-) | 418.5 5 | (E2) | 0.0600 | α=0.0600, α(K)=0.0359 5, α(L)=0.0180 3, α(M)=0.00467 7, α(N)=0.001233 18, α(O)=0.000269 4, α(P)=4.22×10-5 7, α(Q)=1.346E-6 20 | |
| 2301.1 | (29/2+) | 0.30 ns 14 | 404.7 2 | E2(+M1) | 0.19 | α=0.19 13, α(K)=0.15 11, α(L)=0.033 13, α(M)=0.0081 29, α(N)=0.00214 76, α(O)=4.8×10-4 18, α(P)=8.1E-5 34, α(Q)=5.2E-6 38 |
| 2393.5 | (33/2+) | 4.62 ns 6 | 92.5 5 | E2 | 13.7 | B(E2)(W.u.)=15.9 7, α=13.7 4, α(L)=10.1 3, α(M)=2.75 8, α(N)=0.725 22, α(O)=0.154 5, α(P)=0.0223 7, α(Q)=7.26E-5 18 |
| 2894.8 | (37/2+) | 501.3 5 | (E2) | 0.0384 | α=0.0384, α(K)=0.0251 4, α(L)=0.00994 15, α(M)=0.00255 4, α(N)=0.000674 10, α(O)=0.0001481 22, α(P)=2.36×10-5 4, α(Q)=9.19E-7 13 | |
| 3257.5 | (37/2+) | 864.0 2 | (E2) | 0.0119 | α=0.0119 6, α(K)=0.00906 13, α(L)=0.00219 3, α(M)=0.000539 8, α(N)=0.0001421 20, α(O)=3.18×10-5 5, α(P)=5.30E-6 8, α(Q)=3.12E-7 5 | |
| 3506.1 | (39/2) | 374.0 5 | (E2) | 0.0808 | α=0.0808, α(K)=0.0450 7, α(L)=0.0265 4, α(M)=0.00696 11, α(N)=0.00184 3, α(O)=0.000400 6, α(P)=6.20×10-5 10, α(Q)=1.719E-6 25 | |
| 3628.8 | (41/2+) | 371.3 2 | (E2) | 0.0824 | α=0.0824, α(K)=0.0457 7, α(L)=0.0272 4, α(M)=0.00714 10, α(N)=0.00189 3, α(O)=0.000410 6, α(P)=6.36×10-5 9, α(Q)=1.746E-6 25 | |
| 3825.4 | (45/2+) | 1.49 ns 7 | 196.6 5 | (E2) | 0.622 | B(E2)(W.u.)=10.3 5, α=0.622 11, α(K)=0.1671 25, α(L)=0.335 6, α(M)=0.0905 17, α(N)=0.0239 5, α(O)=0.00512 10, α(P)=0.000759 14, α(Q)=7.78E-6 12 |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (9/2+) | 1.6 µs 2 % α ≈ 100 | Only α decay observed. Other decay modes are expected to be small. E(level): Only α decay observed. Other decay modes are expected to be small. |
| 209 | E(level): From 221Th α decay. | ||
| 754 | (7/2+) | E(level): From 221Th α decay. | |
| 3257.5 | (37/2+) | Jπ(level): These states were proposed to have two ν j15/2 and/or some proton excitations by 1984Ro20. In addition, the isomeric state is suggested to include large amount of "((ν i11/2+2)10+(ν g9/2))29/2+ coupled to 2+ state of 214Ra " configuration. No definite assignment could be made. | |
| 3628.8 | (41/2+) | Jπ(level): These states were proposed to have two ν j15/2 and/or some proton excitations by 1984Ro20. In addition, the isomeric state is suggested to include large amount of "((ν i11/2+2)10+(ν g9/2))29/2+ coupled to 2+ state of 214Ra " configuration. No definite assignment could be made. | |
| 3825.4 | (45/2+) | 1.49 ns 7 | Jπ(level): These states were proposed to have two ν j15/2 and/or some proton excitations by 1984Ro20. In addition, the isomeric state is suggested to include large amount of "((ν i11/2+2)10+(ν g9/2))29/2+ coupled to 2+ state of 214Ra " configuration. No definite assignment could be made. |
| E(level) | E(gamma) | Comments |
| 539.61 | 539.6 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 931.08 | 600.3 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 1001.91 | 335.7 | M(γ): d from γ(θ) in (HI,xnγ), Δπ=yes from level scheme | 462.3 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 1173.0 | 506.8 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 1337.5 | 335.6 | M(γ): d from γ(θ) in (HI,xnγ), Δπ=no from level scheme | 406.4 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 1454.4 | 452.5 | E(γ): Multiply placed M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 1611.2 | 156.8 | M(γ): d from γ(θ) in (HI,xnγ), Δπ=yes from level scheme | 438.2 | E(γ): Multiply placed M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 1971.3 | 360.1 | E(γ): Multiply placed |
| 2029.7 | 418.5 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 2894.8 | 501.3 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 3257.5 | 864.0 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 3506.1 | 374.0 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 3628.8 | 371.3 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
| 3825.4 | 196.6 | M(γ): Q from γ(θ) in (HI,xnγ), E2 from assumed band structure or RUL. |
217Ra evaluated by E.α. McCutchan, S.K. Rathi, and S. Garg
Levels: Configurations given here as as assigned by 1984Ro20 and 1984Su10 and constitute the main component of the state.
Q-value: S(2n)=12787 10; S(2p)=7520 10 (2017Wa10).