Line source representation for laser-generated ultrasound in an elastic transversely isotropic half-space

Journal of the Acoustical Society of America

Volumn 116, Issue 5, 2004, Pages 2914-2922

  Hurley, David H ^a   Spicer, James B ^b  

^a IDAHO NATIONAL LABORATORY   (United States)

^b Johns Hopkins University   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ELASTICITY; GEOMETRY; LASER APPLICATIONS; MATHEMATICAL MODELS; SHEAR STRESS; SINGLE CRYSTALS;

DIPOLES; LASER LINE SOURCES; WAVE-FORMS;

ULTRASONICS;

ZINC;

ARTICLE; CRYSTAL; DIPOLE; ELASTICITY; GEOMETRY; LASER; PRIORITY JOURNAL; SHEAR STRESS; ULTRASOUND; WAVEFORM;

EID: 9644266727     PISSN: 00014966     EISSN: None     Source Type: Journal    
DOI: 10.1121/1.1791721     Document Type: Article

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22. In Ref. 21 it was shown that the vertical displacement along the epicentral direction for a point source can be obtained by taking a temporal and spatial derivative of the line source solution.
23. 1/2, where ω is the laser beam radius and t is the time interval of interest. Considering laser generation in zinc, it can be shown that for a spot size of 10 μm, it is reasonable to neglect the effects of thermal diffusion for frequencies below 100 MHz.
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25. 2.
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