ADOPTED LEVELS, GAMMAS for 192Po
Author: Coral M. Baglin | Citation: Nucl. Data Sheets 113, 1871 (2012) | Cutoff date: 15-Jun-2012
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-1.101×104 keV 4 | S(n)= 11073 keV 14 | S(p)= 2120 keV 14 | Q(α)= 7320 keV 4 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 196Rn α decay | B | 160Dy(36Ar,4nγ), |
| C | 192Po IT decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC | 0+ | 32.2 ms 3 % ε ≈ 0.5 % α ≈ 99.5 | |||||
| 262.0 3 | BC | (2+) | 262.0 3 | 100 | [E2] | 0.0 | 0+ | |
| 605.2 5 | BC | (4+) | 343.2 3 | 100 | [E2] | 262.0 | (2+) | |
| 1043.3 7 | BC | (6+) | 438.1 5 | 100 | [E2] | 605.2 | (4+) | |
| 1561.2 9 | BC | (8+) | 517.9 5 | 100 | [E2] | 1043.3 | (6+) | |
| 2140.6 13 | BC | (10+) | 579.4 5 | 100 | [E2] | 1561.2 | (8+) | |
| 2294.6 | C | (11-) | 0.58 µs 10 % IT = 100 | 154? | 100 | E1 | 2140.6 | (10+) |
E(level): From least-squares fit to Eγ.
Jπ(level): From (36Ar,4nγ); based on Iγ, αγγ coin, and level-energy systematics for neighboring nuclei (see, e.g., fig. 4 of 2003Va05), 1996He22 tentatively identify the observed gammas with the E2 cascade of the g.s. band of 192Po.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Kπ=0+ GS Band. | |||||||
| 0.0 | 0+ | 32.2 ms 3 % ε ≈ 0.5 % α ≈ 99.5 | |||||
| 262.0 3 | (2+) | 262.0 3 | 100 | [E2] | 0.0 | 0+ | |
| 605.2 5 | (4+) | 343.2 3 | 100 | [E2] | 262.0 | (2+) | |
| 1043.3 7 | (6+) | 438.1 5 | 100 | [E2] | 605.2 | (4+) | |
| 1561.2 9 | (8+) | 517.9 5 | 100 | [E2] | 1043.3 | (6+) | |
| 2140.6 13 | (10+) | 579.4 5 | 100 | [E2] | 1561.2 | (8+) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 262.0 | (2+) | 262.0 3 | [E2] | 0.191 | α=0.191 | |
| 605.2 | (4+) | 343.2 3 | [E2] | 0.0853 | α=0.0853 | |
| 1043.3 | (6+) | 438.1 5 | [E2] | 0.0444 | α=0.0444 | |
| 1561.2 | (8+) | 517.9 5 | [E2] | 0.0295 | α=0.0295 | |
| 2140.6 | (10+) | 579.4 5 | [E2] | 0.0228 | α=0.0228 | |
| 2294.6 | (11-) | 0.58 µs 10 % IT = 100 | 154 | E1 | 0.1558 | B(E1)(W.u.)=9.6E-8 17, α=0.1558 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 32.2 ms 3 % ε ≈ 0.5 % α ≈ 99.5 | Δ<r2>(192Po,210Po)=-0.537 fm2 13 (2011Co01); there exists an additional systematic uncertainty of 0.022 fm2. Datum obtained using in-source resonant LASER spectroscopy. E(level): Δ<r2>(192Po,210Po)=-0.537 fm2 13 (2011Co01); there exists an additional systematic uncertainty of 0.022 fm2. Datum obtained using in-source resonant LASER spectroscopy. Kπ=0+ GS Band. |
| 262.0 | (2+) | E(level): Kπ=0+ GS Band. | |
| 605.2 | (4+) | E(level): Kπ=0+ GS Band. | |
| 1043.3 | (6+) | E(level): Kπ=0+ GS Band. | |
| 1561.2 | (8+) | E(level): Kπ=0+ GS Band. | |
| 2140.6 | (10+) | E(level): Kπ=0+ GS Band. |
| E(level) | E(gamma) | Comments |
Identification: excitation functions for 182W(20Ne,xn) (1977De32).
Activity (T1/2=0.5 s 1, Eα=6580 keV 40), attributed in 1958To25 to 192Po, disagrees with systematics and with data of 1981Le23.
Theory (partial list only):
Calculations using Coulomb and proximity potential model: t(-1/2), branching and HF for g.s. α decay (2011Sa10); T1/2 and HF for g.s. α decay (2010Sa36).
Q-value: Note: Current evaluation has used the following Q record -10990 60 11087 16 2120 13 7320 3 2011AuZZ
Q-value: Values are from 2011AuZZ (cf. S(n)=11089 16, S(p)=2120 14 and Q(α)=7319 5 from 2003Au03).