ADOPTED LEVELS for 148Xe
Author: N. Nica | Citation: Nucl. Data Sheets 208, 1 (2026) | Cutoff date: 17-Jan-2026
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=8260 keV SY | S(n)= 4320 keV SY | S(p)= 14740 keV SY | Q(α)= -4850 keV SY | ||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0 | 0+ | 85 ms 15 % β- = 100 % β-n = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 0+ | 85 ms 15 % β- = 100 % β-n = ? | Calculated %β-n=10.0 (2019Mo01); 9.6 (2002Pf04). |
2020Wu04 compiled for XUNDL database by B. Singh (McMaster)
2020Wu04: 148Xe nuclide produced at the RIBF-RIKEN facility in 9Be(238U,F) reaction at E=345 MeV/nucleon at beam intensity of 5pnA. Fission fragments identified by magnetic rigidity (Bρ) and energy loss (ΔE) time-of-flight (tof), with BigRIPS spectrometer, which determines atomic Z and mass-to-charge ratio α/Q, (Q=charge state of the ions). Separated nuclei were implanted at 100 ions/s rate of in the β counting system WAS3ABi (stack of five Double Sided Silicon Strip Detectors (DSSSDs)). The WAS3ABi setup was surrounded by EURICA cluster array (84 HPGe γ-ray detectors). Measured half-life of separated and implanted ions by fitting the time distribution of the correlated decay curves. Comparison of measured half-lives with FRDM+QRPA (2003), FRDM+QRPA (2019), KTUY+GT2, RHB+pn-RQRPA, and DF+CQRPA theoretical calculations.
2010Oh02: 148Xe nuclide identified in Be(238U,F) and Pb(238U,F) reactions with 238U86+ beam energy of 345 MeV/nucleon produced by the cascade operation of the RBIF accelerator complex of the linear accelerator RILAC and four cyclotrons RRC, fRC, IRC and SRC. Identification of 148Xe nuclei was made on the basis of magnetic rigidity, time-of-flight and energy loss of the fragments using BigRIPS fragment separator. Experiments performed at RIKEN facility.
Based on α/Q spectrum and Z versus α/Q plot (Q=charge state), one count was assigned to 148Xe isotope.
Q-value: ΔQ(β-)=300, ΔS(n)=360, ΔS(p)=420, ΔQ(α)=420 (syst,2021Wa16)
Q-value: S(2n)=6840 300, Q(β-n)=5200 300 (syst,2021Wa16)