ADOPTED LEVELS, GAMMAS for 126Ag
Authors: H. Iimura, J. Katakura, S. Ohya | Citation: Nucl. Data Sheets 180, 1 (2022) | Cutoff date: 1-Oct-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=11540 keV SY | S(n)= 4270 keV SY | S(p)= 14050 keV SY | Q(α)= -11270 keV SY | ||
| Reference: 2021Wa16 |
| References: | |||
| A | 126Pd β- decay (48.5 MS) | B | 126Pd β- decay (23.0 MS) |
| C | 126Ag IT decay (27 μs) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0+X | A C | (3+) | 52 ms 10 % β- = 100 % β-n = ? | |||||
| 0+Y | (GE 8) | 92 ms 9 % β- = 100 % β-n = ? | ||||||
| 0+Z | B | |||||||
| 194+Z | B | 193.7 | 100 | 0+Z | ||||
| 254.8+X 5 | A C | (1-) | 27 µs 6 % IT = 100 | 254.8 5 | 100 | (M2) | 0+X | (3+) |
| 792+Z? | B | 598.1 | 100 | 194+Z | ||||
| 1534+Z? | B | 741.8 | 100 | 792+Z | ||||
| 1762+Z? | B | 227.9 | 100 | 1534+Z | ||||
| 2121+Z | B | 359.5 | 100 | 1762+Z | ||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 254.8+X | (1-) | 27 µs 6 % IT = 100 | 254.8 5 | (M2) | 0.163 | B(M2)(W.u.)=0.037 +10-7, α=0.163 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0+X | (3+) | 52 ms 10 % β- = 100 % β-n = ? | Measured %β-n: 3.8 2 (2021Ha19), 13.7 11 (2014SmZZ). These values probably include 0+x and 0+y levels. |
| 0+Y | (GE 8) | 92 ms 9 % β- = 100 % β-n = ? | Measured %β-n: 3.8 2 (2021Ha19), 13.7 11 (2014SmZZ). These values probably include 0+x and 0+y levels. |
| 792+Z | E(level): Ordering of the transitions in the 359.5-227.9-741.8-598.1 cascade is not determined. Level energy is uncertain due to ambiguous ordering of the transitions in the 359.5-227.9-741.8-598.1 cascade. | ||
| 1534+Z | E(level): Ordering of the transitions in the 359.5-227.9-741.8-598.1 cascade is not determined. Level energy is uncertain due to ambiguous ordering of the transitions in the 359.5-227.9-741.8-598.1 cascade. | ||
| 1762+Z | E(level): Ordering of the transitions in the 359.5-227.9-741.8-598.1 cascade is not determined. Level energy is uncertain due to ambiguous ordering of the transitions in the 359.5-227.9-741.8-598.1 cascade. |
1994Be24, 1998Do08: 126Ag produced and identified in Pb(238U,F), E=750 MeV/nucleon reaction using FRS separator and tof at GSI
1995Fe12: U(p,F),E=1 GeV, ISOLDE-CERN facility, measured half-life from neutron decay curve
2000Ka48, 2004KaZR, 2005Ka45: study of 126Ag decay and levels in 126Cd. Isomeric activity suggested in 2005Ka45
2014Ba18 (also 2012Ba62): 126Ag produced in 238U(p,F) at beam energy of E(p)=50 MeV at HRIBF-ORNL. Measured Eγ, Iγ, γγ-coin, half-lives of two activities in 126Ag, one of low-spin (|<4) and the other of high spin (|>8)
2015Lo04: 126Ag nuclide produced at RIBF-RIKEN facility in 9Be(238U,F) reaction at E=345 MeV/nucleon with an average intensity of 6×1010 ions/s. Measured half-life by ion-β correlation and maximum likelihood fits to the decay curve
2021Ha19: 126Ag produced in 9Be(238U,F) reaction with 238U beam of 345 MeV/nucleon from the cascade operation of the RIBF complex of accelerators at RIKEN. Identification of 126Ag made on the basis of magnetic rigidity, time-of-flight and energy loss using the BigRIPS separator and ZeroDegree spectrometer. The separated nuclei were sent to the Advanced Implantation Detector Array (AIDA) for the detection of implanted ions and subsequent β- and β--delayed neutrons using six double-sided silicon-strip detector (DSSDs) for particles, and BRIKEN neutron counter array of 140 3He proportional counters embedded in a high-density polyethylene (HDPE) matrix. Measured and analyzed (implanted ions)-β and (implanted ions)-β-n correlated events to deduce half-life of decay and delayed-neutron emission probability (%β-n or (P1n). Comparison of measured half-lives and Pn values with FRDM+QRPA, FRDM+QRPA+HF, RHB+pn:RQRPA and EDM calculations.
Q-value: ΔQ(β-)=200, ΔS(n)=480, ΔS(p)=450, ΔQ(α)=360 (2021WA16)