Quantitative studies of thermally generated elastic waves in laser-irradiated metals
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- C. B. Scruby
- Materials Physics Division, Atomic Energy Research Establishment, Harwell, Oxfordshire, OX11 ORA, United Kingdom
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- R. J. Dewhurst
- Department of Applied Physics, University of Hull, Hull, HU67Rx, United Kingdom
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- D. A. Hutchins
- Department of Applied Physics, University of Hull, Hull, HU67Rx, United Kingdom
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- S. B. Palmer
- Department of Applied Physics, University of Hull, Hull, HU67Rx, United Kingdom
抄録
<jats:p>Quantitative experimental measurements have been made in the study of thermoelastic generation of elastic waves in a metal by unfocused laser radiation. A calibrated wide-band detection system, incorporating a capacitance transducer, has enabled acoustic waveforms to be recorded with a minimum of distortion. From these measurements, a theoretical model has been developed. The transfer function of the metal block has been deconvoluted to give the acoustic source function, which was modeled as a rapidly expanding point volume of material. The thermoelastic source generated longitudinal (L) and (S) waves, but the latter predominated at the epicenter, where, in experiments presented here, both wave amplitudes L and S were proportional to the total absorbed energy in the laser pulse.</jats:p>
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 51 (12), 6210-6216, 1980-12-01
AIP Publishing
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詳細情報
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- CRID
- 1362262945641810560
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- NII論文ID
- 30015873150
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- DOI
- 10.1063/1.327601
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- ISSN
- 10897550
- 00218979
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- データソース種別
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