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231222s2002 xx ||||| 00| ||eng c |
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|a (DE-627)NLM117699152
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|a (NLM)11885682
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Martin, L Peter
|e verfasserin
|4 aut
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| 245 |
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|a Experimental and simulated ultrasonic characterization of complex damage in fused silica
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|c 2002
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 17.04.2002
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|a Date Revised 16.09.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The growth of a laser-induced, surface damage site in a fused silica window was monitored by the ultrasonic pulse-echo technique. The laser damage was grown using 12-ns pulses of 1.053-microm wavelength light at a fluence of approximately 27 J/cm2. The ultrasonic data were acquired after each pulse of the laser beam for 19 pulses. In addition, optical images of the surface and subsurface damage shape were recorded after each pulse of the laser. The ultrasonic signal amplitude exhibited variations with the damage size, which were attributed to the subsurface morphology of the damage site. A mechanism for the observed ultrasonic data based on the interaction of the ultrasound with cracks radiating from the damage site was tested using two-dimensional numerical simulations. The simulated results exhibit qualitatively similar characteristics to the experimental data and demonstrate the usefulness of numerical simulation as an aid for ultrasonic signal interpretation. The observed sensitivity to subsurface morphology makes the ultrasonic methodology a promising tool for monitoring laser damage in large aperture laser optics used in fusion energy research
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|a Journal Article
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1 |
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|a Chambers, David H
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Thomas, Graham H
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 49(2002), 2 vom: 15. Feb., Seite 255-65
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnas
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| 773 |
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|g volume:49
|g year:2002
|g number:2
|g day:15
|g month:02
|g pages:255-65
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|a AR
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| 952 |
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|d 49
|j 2002
|e 2
|b 15
|c 02
|h 255-65
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