Optical fibres streak camera technique

A curvature of the same shape, but in a series of discontinuous points representing the shock wave travelling through an explosive, is obtained when the optical fibres/streak camera technique is used. 

The other end of the optical fibre is led to the measuring equipment, which will record detonation wave arrival. The length of the optical fibre may go above 20 m. The experiment configuration when the optical fibre/streak camera technique is applied looks like the one shown in Figure 4.29. The optical fibre ends are fixed using a holder. The moment of the arrival of the detonation wave on the optical fibre is recorded as a light point-trace by a streak camera whose writing speed is 10 mm/ps. 

Figure 4.29. The test arrangem t for the determination of detonation velocity applying the optical fibres/streak camera technique...

Figure 2.24. Wedge test setiq) with optical fibres/streak camera r ording technique...

The detonation wave s arrival at the optical fibre, i.e., the light signal accompanying the detonation process, can be either recorded by the optical technique using a high-speed streak camera, or it can be transformed into an electric signal that may be recorded by a fast-storage oscilloscope or a multichannel analyser. 

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