Critical energy of direct detonation initiation in gaseous fuel-oxygen mixtures

► New measurement of critical energy of direct detonation initiation data in common gaseous fuel-oxygen mixtures. ► Systematically study the effect of initial conditions on the critical initiation energy. ► Detonation hazard parameter (DH) obtained to assess the detonation sensitivity of each explosive mixture. ► Results are useful for explosion safety assessment and hazard evaluation for fuel-oxygen mixtures.