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Process and apparatus for measuring density fluctuations occurring with pulsed irradiation of a material

  • US 6,671,043 B1
  • Filed: 07/12/2000
  • Issued: 12/30/2003
  • Est. Priority Date: 07/12/1999
  • Status: Active Grant
First Claim
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1. Process for measuring density fluctuations caused by pulsed irradiation on a material, comprising detecting a measuring signal acoustically or optically, wherein at least one of a change of intensity and time slope of the measuring signal occurring during the irradiation of a specific material point is detected, removing a linear thermo-elastic signal fraction from the measuring signal, and setting an irradiation dose as a function of at least one of the change of intensity and the time slope of the measuring signal except for the removed fraction.

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