Optical Measurement Techniques under Shock Compression using Rotating Mirror Type Streak Camera
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概要
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An optical measuring system by means of streak photography has been developed to obtain precise Hugoniot equation of state and optical absorption spectra of solids under shock compression using the two-stage light gus gun described in the preceding paper. The system utilizes light from a 1 kJ high intensity xenon flash lamp with about 10 torr Xe filling pressure. A continuous writing streak camera of rotating mirror type with a maximum writing rate of 13.5 mm/μs has been constructed to observe nonsynchronizable shock phenomena produced with the gun. The streak camera with a slit 23 μm in width (which corresponds to the slit image 92 μm in width on the film) is currently operated at the writing rate 10 mm/μs. Hugoniot equation of state is determined with an accuracy ±1% using the inclined mirror technique. The release adiabat (i.e. adiabatic release path) from the shock compressed state is measured with the buffer technique. An optical absorption spectrographic system has a spectral response of 300-700 nm and wavelength dispersion of 8.3 nm/mm on the film.
著者
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Goto Tsuneaki
The Research Institute For Iron Steel And Other Metals
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Syono Yasuhiko
The Research Institute For Iron Steel And Other Metals
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