ADOPTED LEVELS, GAMMAS for 123Ag
Author: Jun Chen | Citation: Nucl. Data Sheets 174, 1 (2021) | Cutoff date: 15-Apr-2021
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=7850 keV 30 | S(n)= 6530 keV 50 | S(p)= 12240 keV 40 | Q(α)= -9170 keV 30 | ||
Reference: 2021WA16 |
References: | |||
A | 123Pd β- decay | B | 123Ag IT decay (393 NS) |
C | 123Ag IT decay (202 NS) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | AB | (7/2+) | 0.299 s 7 % β- = 100 % β-n = 0.62 9 | |||||
26.96 24 | AB | (9/2+) | 27S | | 0.0 | (7/2+) | ||
59.8 8 | A C | (1/2-) | ||||||
385.0 7 | A | (3/2-,5/2-) | 325.1 | | 59.8 | (1/2-) | ||
442.9 7 | A C | (3/2-,5/2-) | 57.9 383.1 7 | 100 | 385.0 59.8 | (3/2-,5/2-) (1/2-) | ||
656.8 4 | AB | (11/2+) | < 25 ns | 629.6 5 | 100 | 26.96 | (9/2+) | |
740.9 3 | AB | (13/2+) | < 25 ns | 84.1 714.0 2 | 10 5 100 | 656.8 26.96 | (11/2+) (9/2+) | |
968.9 7 | A | 526.0 | | 442.9 | (3/2-,5/2-) | |||
1036.2 4 | A C | 593.3 5 1009.2 | 100 | 442.9 26.96 | (3/2-,5/2-) (9/2+) | |||
1076.54 24 | AB | (9/2-,11/2+) | 335.2 5 1049.3 5 1076.5 3 | 19 4 51 8 100 7 | 740.9 26.96 0.0 | (13/2+) (9/2+) (7/2+) | ||
1426.2 3 | AB | (13/2-) | 349.5 2 685.6 2 769.3 5 | 46.3 25 100.0 28 34.2 18 | 1076.54 740.9 656.8 | (9/2-,11/2+) (13/2+) (11/2+) | ||
1426.4 8 | A C | 390.2 7 | 100 | 1036.2 | ||||
1426.4+Y | C | 202 ns 20 % IT = 100 | X? | | 1426.4 | |||
1473.9 4 | B | (17/2-) | 393 ns 16 % IT = 100 | 48S 732.7 3 | 75 2 100 30 | [E2] [M2] | 1426.2 740.9 | (13/2-) (13/2+) |
1647.2 5 | A | 611.0 | | 1036.2 | ||||
1806.7 5 | A | 770.5 | | 1036.2 | ||||
1852.4 5 | A | 816.2 | | 1036.2 | ||||
2217.0 6 | A | 569.8 | | 1647.2 |
E(level): From a least-squares fit to γ-ray energies, assuming ΔEγ=0.3 keV where not given.
Jπ(level): For excited states, tentative assignment are from 2013La11 based on systematics and observed decay pattern and also from 2019Ch24 based on shell-model predictions.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
1473.9 | (17/2-) | 393 ns 16 % IT = 100 | 48 | [E2] | 19.9 | B(E2)(W.u.)=7.1 8, α=19.9 |
(17/2-) | 393 ns 16 % IT = 100 | 732.7 3 | [M2] | 0.0068 | B(M2)(W.u.)=9.0×10-4 26, α=0.0068 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | (7/2+) | 0.299 s 7 % β- = 100 % β-n = 0.62 9 | %β-n: weighted average of 0.55 9 (1983Re05, uncertainty of 3.6% statistical and 15% systematic given in 1983Re05 combined in quadrature by the evaluator), 0.60 25 (2014TeZY, neutron-β measurement), 1.0 5 (2006Mo07, from implant-β decay curve analysis), and 1.01 24 (2021Te02, neutron counting). |
E(level) | E(gamma) | Comments |
26.96 | 27 | E(γ): not observed experimentally in 2013La11 and 2019Ch24 |
442.9 | 383.1 | E(γ): other: 383.1 from 123Pd β- decay (2019Ch24) |
656.8 | 629.6 | E(γ): other: 629.7 from 123Pd β- decay (2019Ch24) |
740.9 | 84.1 | E(γ): γ not seen in 2013La11 | 714.0 | E(γ): other: 713.6 from 123Pd β- decay (2019Ch24) |
1036.2 | 593.3 | E(γ): other: 594.0 from 123Pd β- decay (2019Ch24) |
1076.54 | 1049.3 | E(γ): other: 1049.6 from 123Pd β- decay (2019Ch24) | 1076.5 | E(γ): other: 1077.0 from 123Pd β- decay (2019Ch24) |
1426.2 | 349.5 | E(γ): other: 349.1 from 123Pd β- decay (2019Ch24) | 685.6 | E(γ): other: 685.3 from 123Pd β- decay (2019Ch24) | 769.3 | E(γ): other: 770.0 from 123Pd β- decay (2019Ch24) |
1426.4 | 390.2 | E(γ): other: 390.1 from 123Pd β- decay (2019Ch24) |
1426.4+Y | X | E(γ): de-exciting transition directly from this isomer is not observed (2013La11). Such transition could feed directly the 1426.1 level or possible unobserved intermediate levels that feed the 1426.1 level |
Other measurements:
1976Lu02: 123Ag produced and identified in 235U(n,F) E=th reaction followed by on-line mass separation. Measured β-delayed neutrons, half-life of 123Ag decay
Precise mass measurements: 2010Br02, 2008Su19 (also 2010Li02)
Structure calculations: 2017Ko24, 2015Sa14, 2012Ji07, 2007Na28, 2003Bo06, 2003Bo48, 1997Bo24, 1996Bo11
The level scheme is based on that of 2019Ch14 in 123Pd β- decay and 2013La11 in 123Ag IT decay (393 ns).
Q-value: S(2n)=11310 30, S(2p)=27900 620, Q(β-n)=2970 30 (2021Wa16)