Abstract: al detonations of C$-2$/H$-2$//O$-2$//N$-2$/ mixtures in an open flow system (initially at 1 atmosphere) and planar detonations of C$-2$/H$-2$//O$-2$/ and H$-2$//O$-2$//C$-2$/H$-2$/ mixtures in an enclosed tube are successfully initiated by use of an ArF laser at 193 nm. The required critical energy for the initiation of spherical detonations is found to be relatively low: approximately 12 $POM 2 mJ for a 40% C$-2$/H$-2$/ in C$- 2$/H$-2$//O$-2$/ mixtures. This small critical energy may be attributed to a relatively strong absorption of C$-2$/H$-2$/ at 193 nm, and possible enhancement by the photodissociation products of C$-2$/H and H. The initiation appears to be accomplished without overdriving the mixtures through a blast wave. The critical energy, delay time, detonation velocity and pressures are measured as functions of stoichiometric mixture ratio, initial pressure and incident laser energy, for both spherical and planar detonations.!15
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机译：摘要：在开放流动系统中（最初在1个大气压下），C $ -2 $ / H $ -2 $ // O $ -2 $ // N $ -2 $ /混合物的全爆轰和C $-封闭管中的2 $ / H $ -2 $ // O $ -2 $ /和H $ -2 $ // O $ -2 $ // C $ -2 $ / H $ -2 $ /通过使用193 nm的ArF激光器启动。发现球形爆轰所需的临界能量相对较低：对于C $ -2 $ / H $ -2中的40％C $ -2 $ / H $ -2 $ /，约为12 $ POM 2 mJ $ // O $ -2 $ /混合物。这种小的临界能量可能归因于在193 nm处C $ -2 $ / H $ -2 $ /的较强吸收，以及C $ -2 $ / H和H的光解产物可能增强。无需通过爆炸波过度驱动混合物即可完成。对于球形和平面爆轰，临界能量，延迟时间，爆轰速度和压力是作为化学计量混合比，初始压力和入射激光能量的函数而测量的！15
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