The rate constants for the reaction H + O₂+ M→HO₂+ M were investigated at elevated pressures from 12 to 33 atm using ignition delay time (IDT) measurements behind reflected shock waves in H₂/O₂/M mixtures with different collision partners M = Ar, H₂O, N₂ and CO₂. The temperature and pressure ranges where the rate constants of the reactions H + O₂+ M→HO₂+ M and H + O₂- > OH + O dominate the IDT sensitivity were selected as optimum test conditions using the detailed H₂/O₂ mechanism of Hong et al. (2011). The current study thus provides a quantitative and relatively direct method for determining the rate constants for H + O₂+ M→HO₂+ M using simple IDT measurements. The rate constants found are consistent with earlier studies, but with reduced uncertainties.

反应H + O ₂的速率常数+ M→HO ₂在点火压力为12至33 atm的高压下使用点火延迟时间（IDT）在具有不同碰撞伙伴M = Ar，H ₂ O，N ₂和CO _2的H ₂ / O ₂ / M混合物中的反射冲击波后面测量了+ M 。反应速率常数H + O ₂的温度和压力范围+ M→HO ₂使用Hong等人的详细H ₂ / O ₂机理，选择IDT敏感性为+ M和H + O _2- > OH + O作为最佳测试条件。（2011）。因此，当前的研究为确定H + O ₂的速率常数提供了一种定量且相对直接的方法。+ M→HO ₂+ M使用简单的IDT测量。发现的速率常数与早期研究一致，但不确定性降低。