| Laser interferometer systems provide a means for probing the refractive index of transparent specimens subjected to dynamic compression. Previous interferometer measurements of optical properties under shock loading are reviewed. A detailed summary of recent optical studies of lithium fluoride (LiF) in CAEP is provided. VISAR data from plate-impact experiments establish the variation of LiF refractive index for shock amplitudes ranging from 3.62 GPa to 19.14 GPa. The refractive index of LiF is determined to be alinear function of pressure as n/n0 = 1 +1.54 x 10-3 P (GPa). It is in excellent agreement with hydrostatic results. In addition, The window VISAR optical correction △v/v0 forshock-loaded LiF show a constant value of 0.241. |
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