New Results on ¹³⁴Te From ¹³⁴Sb β-Decay

The ground-state decay of ¹³⁴Sb (t_1/2 = 0.78 ± 0.06s) is reported to be dominated by a 0^- → 0⁺ first-forbidden Gamow-Teller transition to the ¹³⁴Te ground state (I_β = 97.6%, Q_β = 8.515 MeV). A previous recoil-ion time-of-flight (RI-TOF) spectroscopy measurement of ¹³⁴Sb with the Beta-decay Paul Trap (BPT) indicated that the ground-state feeding of ¹³⁴Te is weaker than reported. The RI-TOF results were reproduced with a subsequent simulation of ¹³⁴Sb ground-state decays to a theorised 5-MeV state fed with ∼17% of the total β-decay strength. To search for higher energy states and transitions, the X-Array and Scintillator and Tape Using Radioactive Nuclei (SATURN) decay station were used to study ^134g,mSb decay using beams from the Californium Rare Isotope Breeder Upgrade (CARIBU) at Argonne National Laboratory (ANL). The experimental details, analysis, and updated nuclear data information will be presented.