ADOPTED LEVELS, GAMMAS for 202Rn
Author: F.G. Kondev | Citation: Nucl. Data Sheets 196, 342 (2024) | Cutoff date: 1-Sep-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-9376 keV 19 | S(n)= 10238 keV 20 | S(p)= 2774 keV 19 | Q(α)= 6773.8 keV 18 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 206Ra α decay | B | 166Er(40Ar,4nγ) |
| C | 181Ta(27Al,6nγ),192Pt(16O,6nγ) | D | Coulomb Excitation |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | ABCD | 0+ | 9.7 s 2 % ε = 22 8 % α = 78 8 | |||||
| 504.00 10 | BCD | 2+ | 8.4 ps 25 | 504.0 1 | 100 | E2 | 0 | 0+ |
| 1029.7 3 | B D | (2+) | 525.7 3 1030 | 100 21 <10.4 | [E2+M1] | 504.00 0 | 2+ 0+ | |
| 1073.10 23 | BCD | 4+ | 2.1 ps 6 | 569.1 2 | 100 | E2 | 504.00 | 2+ |
| 1502.2 6 | B D | (4+) | 472.5 5 | 100 | 1029.7 | (2+) | ||
| 1698.2 3 | BCD | 6+ | 625.2 2 | 100 | E2 | 1073.10 | 4+ | |
| 1790.0 4 | BC | 6+ | 716.7 3 | 100 | E2 | 1073.10 | 4+ | |
| 2077.9 4 | BC | 8+ | 287.8 2 379.9 3 | 100 4 10.1 19 | E2 (E2) | 1790.0 1698.2 | 6+ 6+ | |
| 2159.5 5 | B | 8+ | 461.3 3 | 100 | E2 | 1698.2 | 6+ | |
| 2211.1 4 | B | 421.1 2 | 100 | 1790.0 | 6+ | |||
| 2260.4 5 | B | (9-) | 182.5 3 | 100 | (E1) | 2077.9 | 8+ | |
| 2260.4+X 5 | B | 2.22 µs 7 | ||||||
| 2275.0 5 | B | 8+ | 576.8 3 | 100 | E2 | 1698.2 | 6+ | |
| 2442.9 5 | B | 8+ | 744.7 4 | 100 | E2 | 1698.2 | 6+ | |
| 2760.5 6 | B | 10+ | 601.0 4 | 100 | E2 | 2159.5 | 8+ | |
| 2775.5 8 | B | 332.6 6 | 100 | 2442.9 | 8+ | |||
E(level): From a least-squares fit to Eγ.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Kπ=0+, ground-state band | |||||||
| 0 | 0+ | 9.7 s 2 % ε = 22 8 % α = 78 8 | |||||
| 504.00 10 | 2+ | 8.4 ps 25 | 504.0 1 | 100 | E2 | 0 | 0+ |
| 1073.10 23 | 4+ | 2.1 ps 6 | 569.1 2 | 100 | E2 | 504.00 | 2+ |
| 1698.2 3 | 6+ | 625.2 2 | 100 | E2 | 1073.10 | 4+ | |
| 2159.5 5 | 8+ | 461.3 3 | 100 | E2 | 1698.2 | 6+ | |
| 2760.5 6 | 10+ | 601.0 4 | 100 | E2 | 2159.5 | 8+ | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - Band based on the (2+), 1029.7-keV state | |||||||
| 1029.7 3 | (2+) | ||||||
| 1502.2 6 | (4+) | 472.5 5 | 100 | 1029.7 | (2+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 504.00 | 2+ | 8.4 ps 25 | 504.0 1 | E2 | 0.0345 | B(E2)(W.u.)=28 9, α=0.0345 5, α(K)=0.02325 33, α(L)=0.00843 12, α(M)=0.002141 30, α(N)=0.000557 8, α(O)=0.0001170 16, α(P)=1.505E-5 21 |
| 1029.7 | (2+) | 525.7 3 | [E2+M1] | 0.08 | α=0.08 5, α(K)=0.06 4, α(L)=0.013 6, α(M)=0.0032 13, α(N)=8.2×10-4 34, α(O)=1.8E-4 8, α(P)=2.5E-5 12 | |
| 1073.10 | 4+ | 2.1 ps 6 | 569.1 2 | E2 | 0.0261 | B(E2)(W.u.)=63 18, α=0.0261 4, α(K)=0.01829 26, α(L)=0.00583 8, α(M)=0.001468 21, α(N)=0.000382 5, α(O)=8.06E-5 11, α(P)=1.054E-5 15 |
| 1698.2 | 6+ | 625.2 2 | E2 | 0.02115 | α=0.02115 30, α(K)=0.01524 21, α(L)=0.00445 6, α(M)=0.001111 16, α(N)=0.000289 4, α(O)=6.13×10-5 9, α(P)=8.11E-6 11 | |
| 1790.0 | 6+ | 716.7 3 | E2 | 0.01581 | α=0.01581 22, α(K)=0.01175 16, α(L)=0.00306 4, α(M)=0.000758 11, α(N)=0.0001972 28, α(O)=4.20×10-5 6, α(P)=5.65E-6 8 | |
| 2077.9 | 8+ | 287.8 2 | E2 | 0.1565 | α=0.1565 22, α(K)=0.0754 11, α(L)=0.0602 9, α(M)=0.01585 23, α(N)=0.00413 6, α(O)=0.000849 12, α(P)=0.0001013 14 | |
| 8+ | 379.9 3 | (E2) | 0.0705 | α=0.0705 10, α(K)=0.0416 6, α(L)=0.02154 31, α(M)=0.00558 8, α(N)=0.001453 21, α(O)=0.000302 4, α(P)=3.73×10-5 5 | ||
| 2159.5 | 8+ | 461.3 3 | E2 | 0.0427 | α=0.0427 6, α(K)=0.0278 4, α(L)=0.01117 16, α(M)=0.00286 4, α(N)=0.000744 11, α(O)=0.0001555 22, α(P)=1.975×10-5 28 | |
| 2260.4 | (9-) | 182.5 3 | (E1) | 0.1074 | α=0.1074 16, α(K)=0.0859 12, α(L)=0.01635 24, α(M)=0.00389 6, α(N)=0.001003 15, α(O)=0.0002125 31, α(P)=2.84×10-5 4 | |
| 2275.0 | 8+ | 576.8 3 | E2 | 0.0253 | α=0.0253 4, α(K)=0.01781 25, α(L)=0.00561 8, α(M)=0.001409 20, α(N)=0.000367 5, α(O)=7.75×10-5 11, α(P)=1.014E-5 14 | |
| 2442.9 | 8+ | 744.7 4 | E2 | 0.01461 | α=0.01461 21, α(K)=0.01093 15, α(L)=0.00277 4, α(M)=0.000683 10, α(N)=0.0001778 25, α(O)=3.79×10-5 5, α(P)=5.12E-6 7 | |
| 2760.5 | 10+ | 601.0 4 | E2 | 0.02307 | α=0.02307 32, α(K)=0.01644 23, α(L)=0.00498 7, α(M)=0.001247 18, α(N)=0.000325 5, α(O)=6.86×10-5 10, α(P)=9.04E-6 13 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 0+ | 9.7 s 2 % ε = 22 8 % α = 78 8 | Eα=6618 keV 27 (2015We16), 6641 keV 1 (1996Ta18), 6640.9 keV 25 (1993Wa04), 6636 keV 3 (1992Wa29,1967Va17), 6638 keV 10 (1987He10). E(level): Eα=6618 keV 27 (2015We16), 6641 keV 1 (1996Ta18), 6640.9 keV 25 (1993Wa04), 6636 keV 3 (1992Wa29,1967Va17), 6638 keV 10 (1987He10). Kπ=0+, ground-state band. |
| 504.00 | 2+ | 8.4 ps 25 | B(E2)=1.0 3, Q=+0.9 +29-18 (2015Ga19) E(level): Kπ=0+, ground-state band. |
| 1029.7 | (2+) | E(level): Band based on the (2+), 1029.7-keV state. | |
| 1073.10 | 4+ | 2.1 ps 6 | E(level): Kπ=0+, ground-state band. |
| 1502.2 | (4+) | E(level): Band based on the (2+), 1029.7-keV state. | |
| 1698.2 | 6+ | E(level): Kπ=0+, ground-state band. | |
| 2159.5 | 8+ | E(level): Kπ=0+, ground-state band. | |
| 2760.5 | 10+ | E(level): Kπ=0+, ground-state band. |
| E(level) | E(gamma) | Comments |