Detonation metrology is essential for the development of energetic materials, to characterize existing explosives, and to characterize materials behavior under high pressures. The optical active method (OAM), based on PMMA optical fibers (250 μm diameter) and their radiation transmission loss when shocked, was used to characterize the detonation wave (DW) and shock wave (SW) in inert barriers and applied to measure the detonation pressure in condensed explosives. The detonation velocity and detonation pressure of a PBX based on PETN (86 % PETN, 14 % Sylgard), known as Seismoplast were measured. The OAM with protected optical probes (POP) was used to determine the mean detonation velocity (7337 m s⁻¹), whereas the OAM with bare optical probes (BOP) was used to measure the induced shock velocities generated by Seismoplast on different thicknesses of PMMA (1–9 mm), aluminum and copper (1–7 mm). Based on the shock velocities at the interfaces between the explosive and the inert barriers, the CJ pressure of Seismoplast was determined as 21.2 GPa.

中文翻译：

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用光活性法表征基于 PETN 的 PBX 的爆轰压力

爆轰计量学对于开发含能材料、表征现有炸药以及表征高压下的材料行为至关重要。基于 PMMA 光纤（直径 250 μm）及其受到冲击时的辐射传输损耗的光学有源法 (OAM) 用于表征惰性屏障中的爆震波 (DW) 和冲击波 (SW) 并应用于测量浓缩炸药的爆压。测量了基于 PETN（86 % PETN，14 % Sylgard）的 PBX（称为 Seismoplast）的爆速和爆轰压力。带有受保护光学探针 (POP) 的 OAM 用于确定平均爆速 (7337 m s ^-1)，而带有裸光学探头 (BOP) 的 OAM 用于测量由 Seismoplast 在不同厚度的 PMMA（1-9 毫米）、铝和铜（1-7 毫米）上产生的诱发冲击速度。根据炸药和惰性屏障界面处的冲击速度，Seismoplast 的 CJ 压力确定为 21.2 GPa。