Abstract
X-ray diffraction patterns of shock-compressed samples of potassium chloride and α-quartz were analyzed in order to estimate the physical state of the substance in the phase coexistence region and the effect of the relaxation process on the location of experimental Hugoniot points in this region. The experimental results are consistent with the interpretation that the state of a substance on the transition curve connecting the Hugoniots of the initial phase and the high-pressure phase can be represented as a state of the substance with an incomplete relaxation process. The degree of incompleteness is determined by the ratio of the residence time of the substance at the shock front to the full time of the relaxation process.
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References
L. A. Egorov, A. I. Barenboim, N. G. Makeev, V. V. Mokhova, and V. G. Rumyantsev, “X-ray diffraction study of dynamically compressed Be, Al, LiF, KCl, and Fe + 3% Si”, Zh. Éksp. Teor. Fiz., 103, No. 1, p. 135 (1993).
L. A. Egorov, A. I. Barenboim, V. V. Mokhova, and A. I. Samoilov, “X-ray diffraction measurements of structural parameters of dynamically compressed SiO2, Si, and LiF at pressures below the elastic Hugoniot limit,” Zh. Khim. Fiz., 14, Nos. 2–3, 100 (1995).
L. A. Egorov, D. A. Volkov, I. N. Govorunov, V. V. Mokhova, and M. N. Pavlovskii, “X-ray diffraction study of phase transformation of shock-compressed α-quartz,” Vopr. Atomn. Nauki Tekh., Ser. Teort. Prikl. Fiz., 2, 38 (2008).
L. A. Egorov, A. A. Lukashev, É. V. Nitochkina, and Yu. K. Orekin, “Recording of single crystal interference using short-wavelength x-rays with microsecond exposures,” Prib. Tekh. Éskp., No. 2, p. 200 (1968).
L. V. Al’tshuler, “Application of shock waves in high pressure physics,” Usp. Fiz. Nauk, 85, 197 (1965).
P. W. Bridgman, “The compression of sixty-one solid subtances to 20 000 kg/cm determined by new rapid method,” Proc. Amer. Acad. Arts Sci., 76, No. 1, 9–24 (1945).
L. V. Al’tshuler, M. N. Pavlovskii, and V. V. Komissarov, “Hysteresis of polymorphic transformations of potassium chloride in shock waves,” Zh. Éksp. Teor. Fiz., 106, No. 4(10), p. 1136 (1994).
G. E. Duvall and R. A. Graham, “Phase transition under shock-wave loading,” J. Rev. Modern Phys., 49, No. 3, p. 523 (1977).
D. B. Hayes, “Polymorphic phase transformation rates in shock-loaded potassium chloride,” J. Appl. Phys., 45, p. 1208 (1974).
D. H. Kalantar, J. F. Belak, G. W. Collins, J. D. Colvin, H. M. Davies, J. H. Eggert, T. C. Germann, J. Hawreliak, B. L. Holian, K. Kadau, P. S. Lomdahl, H. E. Lorenzana, M. A. Meyers, K. Rosolankova, M. S. Schneider, J. Sheppard, J. S. Stolken, and J. S. Wark, “Direct observation of the α-ɛ transition in shock-compressed iron via nanosecond x-ray diffraction,” Phys. Rev. Lett., 95, 075502 (2005).
Q. Johnson and A. C. Mitchell, “First x-ray diffraction evidence for a phase transition during shock-wave compression,” Phys. Rev. Lett., 29, No. 20, 1369 (1972).
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Translated from Fizika Goreniya i Vzryva, Vol. 47, No. 6, pp. 123–128, November–December, 2011.
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Egorov, L.A., Mokhova, V.V. Analysis of phase transformations in shock-compressed potassium chloride and α-quartz in terms of x-ray crystallography. Combust Explos Shock Waves 47, 727–732 (2011). https://doi.org/10.1134/S0010508211060165
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DOI: https://doi.org/10.1134/S0010508211060165