The β decay of tellurium 135 and 137

Tellerium 135 and 137 nuclei were produced in thermal neutron fission of235U separated by on-line isotope separator and deposited on a movable tape. Gamma ray singles,γ-γ, β-γ coincidences and time sequencedγ spectra were collected using Ge(Li) detectors and scintillator (NE 102 A) telescope. The half-lives and mass excesses of135Te and137Te were measured and level schemes of135I and135I have been established. The level scheme of135I has been compared to different shell model calculations.