Negative Parity Bands and Signature Splitting Inversion in ⁸⁰Rb

High spin states in ⁸⁰Rb were studied via the ⁶⁵Cu+¹⁹F, ⁶⁶Zn+¹⁸O and ⁶⁸Zn+¹⁶O reactions. The 75-MeV ¹⁹F, 76-MeV ¹⁸O and 80-MeV ¹⁶O beams were provided by the CIAE HI-13 Tandem accelerator and JAERI Tandem accelerator. The prompt γ-γ coincidence and the directional correlation from oriented nuclei (DCO) were measured by the detector arrays in CIAE and JAERI. Twenty-three new states with 28 new transitions have been assigned to ⁸⁰Rb. The states were observed up to spins 20⁺ and 22^- in the α = 0 branch for the positive and negative parity yrast bands respectively. The negative parity non-yrast bands were significantly extended up to spins of 22^- and 15^-. The band crossings with frequencies 0.51 MeV and 0.61 ,MeV in the α = 0 cascade were observed for the first time. The signature splitting was observed in both the negative parity bands. The signature inversions at about spins 7ħ and 15ħ were observed.