Jan 20 2010
Specialised Imaging Ltd. has released a new application note describing how its SIMD8 ultra-high speed framing camera has been used to record the detonation of high explosives.
The purpose of the experiment was a proof of principle to show that the SIMD8 camera could image the extreme brightness of the explosive fireball with no interframe crosstalk and minimal or no phosphor lag.
The application note describes how 8 ounces of high explosive was detonated in a blast containment chamber with the SIMD8 sited 3 metres away looking through a polycarbonate viewing port. The SIMD8 was programmed to take an 8 frame sequence, at 100,000 frames per second, with an initial delay of 15 microseconds and equally spaced interframe times of 10 microseconds. The exposure time for all frames was programmed for 20 nanoseconds. Framing data is presented that clearly shows no crosstalk or ghost imaging in either the early or later frames.
Unlike many traditional ultra fast framing cameras the optical design of the SIMD8 provides the choice of up to 8 separate optical channels without compromising performance or image quality. Effects such as parallax and shading, inherent in other designs, are eliminated and the high spatial resolution (> 36 lp/mm) is the same from frame to frame and in both axes. Individual ultra-high resolution intensified CCD detectors, controlled by state-of-the-art electronics, offer almost infinite control over gain and exposure allowing researchers total freedom to capture images of even the most difficult transient phenomena.
Specialised Imaging Ltd. is a knowledgeable, dynamic company focused upon design, manufacture, service and supply of ultra high-speed imaging systems and components for industrial, defence and scientific applications.
A copy of Application Note 1 may be downloaded from http://www.specialised-imaging.com/application_notes.htm.
For further information on this application please contact Specialised Imaging Ltd on telephone +44-1442-827728 or email [email protected].