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Laser decontamination method

  • US 6,056,827 A
  • Filed: 02/13/1997
  • Issued: 05/02/2000
  • Est. Priority Date: 02/15/1996
  • Status: Expired due to Fees
First Claim
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1. A method for decontaminating a contaminated member, said method comprising:

  • moving in an advancing direction relative to and along a surface of said contaminated member a gas supply nozzle having an axis and an outlet opening defined along a plane, while supplying a gas from said nozzle toward said contaminated member, and while applying to said contaminated member a laser beam condensed by a condenser lens incorporated in said nozzle, thereby continuously melting or evaporating and removing a contaminated surface layer of said member, whereby said contaminated member is cleaned;

    said axis of said nozzle coinciding with an axis of said laser beam;

    said plane defining said outlet opening being inclined with respect to said axis of said laser beam in a direction away from said surface of said contaminated member relative to said advancing direction; and

    said gas being supplied toward said contaminated member in a direction diagonal to said axis of said laser beam.

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