Effect of laser supported detonation wave confinement on termination conditions
Effect of laser supported detonation wave confinement on termination conditions
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DOI：
10.1007/s00193-008-0137-y
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发表时间：
2008-04
期刊：
影响因子：
2.2
通讯作者：
M. Ushio;K. Komurasaki;Koichi Kawamura;Y. Arakawa
中科院分区：
文献类型：
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作者：
M. Ushio;K. Komurasaki;Koichi Kawamura;Y. Arakawa
利用线聚焦激光光学驱动激光支撑爆轰波，诱导冲击波在二维空间中从LSD区域横向扩展到周围空气中。LSD波被限制在准一维空间中，使用楔形喷嘴来限制爆炸波的横向扩展。从显示爆炸波扩展的阴影图中推导出LSD终止阈值和爆炸波能量。有限制和无限制情况下的阈值激光强度分别估计为17和34 GW/m2，表明横向膨胀对LSD终止条件有很大影响。
A laser supported detonation (LSD) wave was driven using line-focusing laser optics, in which an induced blast wave expanded laterally from the LSD region to surrounding air in two-dimensional space. The LSD wave was confined in quasi-1D space using a wedge nozzle to restrict the lateral expansion of a blast wave. The LSD termination threshold and the blast wave energy were deduced from shadowgraphs showing the blast wave expansion. The respective threshold laser intensities for cases with and without confinement were estimated as 17 and 34 GW/m2, indicating that the lateral expansion strongly influenced on the LSD termination condition.