Effects of laser-driven shocks on silicon single crystals

Damage of single-crystal Si induced by 25-ns pulses from a ruby laser (694 nm) has been studied after retrieval of the samples. Macroscopic evaluation was made using optical microscopy and measurement of the surface profiles. Microscopic study techniques included Laue and topographic x-ray methods a...

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Bibliographic Details
Published in:Journal of applied physics 1987-02, Vol.61 (3), p.1155-1161
Main Authors: WEBB, A. W, SKELTON, E. F, NAGEL, D. J, QADRI, S. B
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physical radiation effects, radiation damage
Physics
Structure of solids and liquids
crystallography
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Summary:Damage of single-crystal Si induced by 25-ns pulses from a ruby laser (694 nm) has been studied after retrieval of the samples. Macroscopic evaluation was made using optical microscopy and measurement of the surface profiles. Microscopic study techniques included Laue and topographic x-ray methods as well as x-ray rocking curves. Cleavage affected both spallation and front surface damage. Some surface fracturing takes place after the environment has cooled below the melting point of Si, while other instances seem to be controlled by the shock geometry rather than cleavage planes. The impact zone remains single crystal with narrowly oriented mosaic structure noted occasionally. Material around the impact site is polycrystalline, evidently redeposited from the plasma.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.338160