ADOPTED LEVELS for 148Cs
Author: N. Nica | Citation: Nucl. Data Sheets 208, 1 (2026) | Cutoff date: 17-Jan-2026
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=10634 keV 13 | S(n)= 3062 keV 16 | S(p)= 11800 keV SY | Q(α)= -4010 keV SY | ||
| Reference: 2021WA16 |
| E(level) (keV) | T1/2(level) |
| 0 | 151.1 ms 12 % β- = 100 % β-n = 29.0 45 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
2020Wu04 compiled for XUNDL database by B. Singh (McMaster)
2020Wu04: 148Cs nuclide produced at the RIBF-RIKEN facility in 9Be(238U,F) reaction at E=345 MeV/nucleon and an intensity of 5pnA. Identification of fission fragments of interest was made based on time-of-flight (tof), magnetic rigidity (Bρ), and energy loss (ΔE) using the BigRIPS spectrometer, determining atomic Z and mass-to-charge ratio α/Q, where Q=charge state of the ions. The separated nuclei were implanted at a rate of 100 ions/s in the β counting system of the Wide range Active Silicon-Strip Stopper Array for Beta and ion detection (WAS3ABi), which included a stack of five Double Sided Silicon Strip Detectors (DSSSDs). The WAS3ABi setup was surrounded by Euroball RIken Cluster Array (EURICA) array of 84 HPGe detectors for γ detection. Half-life of the separated and implanted ions was determined by fitting the time distribution of β(implants)- and/or βγ(implants)-correlated decay curves to the sum of activities of parent nuclei, daughter nuclei, grand-daughter nuclei, β-delayed neutron daughter and grand-daughter nuclei, and a constant background. Comparison of measured half-lives with FRDM+QRPA (2003), FRDM+QRPA (2019), KTUY+GT2, RHB+pn-RQRPA, and DF+CQRPA theoretical calculations.
2015OdZZ, 2015YaZW (same group): measured isomer T1/2=4.2 μs 2
Q-value: ΔS(p)=200, ΔQ(α)=400 (syst,2021Wa16)
Q-value: S(2n)=7743 13, S(2p)=25950 300 (syst), Q(β-n)=5282 24 (2021Wa16)